Electrical Specification
March 9, 2017 | Author: Jane Nixon | Category: N/A
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VOLUME-5 SPECIFICATIONS FOR ELECTRICAL WORKS
PROPOSED AL TADAWI HOSPITAL, AT PLOT NO 2140857, AL GARHOUD COMMUNITY/BLOCK, DUBAI
INDEX SPECIFICATIONS
PART B – ELECTRICAL WORKS TABLE OF CONTENTS SECTION: SECTION 1
:
GENERAL REQUIREMENTS
SECTION 2
:
ELECTRICAL ACCESSORIES
SECTION 3
:
STANDBY DIESEL GENERATOR
SECTION 4
:
LOW VOLTAGE DISTRIBUTION
SECTION 5
:
VARIABLE FREQUENCY DRIVES
SECTION 6
:
MOTOR CONTROL CENTRE
SECTION 7
:
SECTION 8
:
POWER FACTOR CORRECTION CAPACITORS, REGULATORS AND HARMONIC FILTERS CONDUITS/TRUNKING/CABLE TRAYS LADDERS AND FITTINGS
SECTION 9
:
SYSTEM OF WIRING
SECTION 10
:
LIGHTING
SECTION 11
:
LIGHTING CONTROL SYSTEM
SECTION 12
:
LIGHTNING PROTECTION SYSTEM
SECTION 13
:
EARTHING
SECTION 14
:
UPS SYSTEM
SECTION 15
:
ANALOGUE ADDRESSABLE FIRE ALARM AND DETECTION SYSTEM
SECTION 16
:
CCTV MONITORING SYSTEM
SECTION 17
:
VOICE / DATA SYSTEM
SECTION 18
:
CENTRAL BATTERY SYSTEM
SECTION 19
:
NURSE CALL SYSTEM
SECTION 20
:
CENTRAL CLOCK SYSTEM
SECTION 21
:
PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
SECTION 22
:
ACCESS CONTROL AND DOOR MONITORING SYSTEM
SECTION 23
:
MATV System
AL TADAWI HOSPITAL
JULY 2014
AL TADAWI HOSPITAL
PART B - SECTION 1 GENERAL REQUIREMENTS
SECTION 1 GENERAL REQUIREMENTS
Page 1 of 25
AL TADAWI HOSPITAL
PART B - SECTION 1 GENERAL REQUIREMENTS
SECTION 1 GENERAL REQUIREMENTS-INDEX 1.0
SCOPE OF WORKS
2.0
GENERAL
3.0
EXAMINATION OF SITE AND DRAWINGS
4.0
PERMITS FEES AND INSPECTIONS.
5.0
CONTRACT DRAWINGS
6.0
SHOP DRAWINGS, BUILDERS WORK DRAWINGS AND MATERIAL SUBMITTALS
7.0
RECORD (AS BUILT) DRAWINGS
8.0
OPERATION & MAINTENANCE MANAULS
9.0
TEMPORARY SERVICE.
10.0
COOPERATION
11.0
EXISTING WORK AND EQUIPMENT
12.0
SUPERVISION.
13.0
CLEANING.
14.0
ACCESSIBILITY, ACCESS PANELS AND DOORS.
15.0
CONTRACTORS DESIGN RESPONSIBILITY
16.0
HIGH VOLTAGE NETWORK
17.0
AUTHORITIES APPROVAL.
18.0
REGULATIONS Page 2 of 25
AL TADAWI HOSPITAL
PART B - SECTION 1 GENERAL REQUIREMENTS
19.0
DEFINITIONS
20.0
PHASE IDENTIFICATION
21.0
VOLTAGE DROP
22.0
TELECOMMUNICATIONS INTERFERENCE
23.0
SEGREGATION OF SERVICES
24.0
BUILDER'S WORK
25.0
FOUNDATION BOLTS AND SUPPORTS
26.0
DESIGN AND STANDARDISATION
27.0
MATERIALS, SHOP DRAWINGS AND WORKMANSHIP
28.0
SAMPLES
29.0
STORAGE OF PLANT AND EQUIPMENT
30.0
PAINTING (ELECTRICAL PLANT AND EQUIPMENT)
31.0
LABELS
32.0
INSPECTION AND TESTS AT MANUFACTURER'S WORKS - LOCAL
33.0
TESTING AND COMMISSIONING AT SITE
34.0
SYSTEM ACCEPTANCE.
35.0
CORRECTION AFTER COMPLETION.
36.0
GUARANTEES.
37.0
MAINTENANCE
38.0
SCHEDULE OF MANUFACTURERS Page 3 of 25
AL TADAWI HOSPITAL
1.0
PART B - SECTION 1 GENERAL REQUIREMENTS
SCOPE OF WORKS The Scope of works includes the supply, delivery to site, installation, commissioning and testing of the various complete systems outlined briefly below, and as described elsewhere in the specification documents. The contractor shall be responsible to visit the site to familiarize himself with the scope of work and preparation of shop drawings and obtaining approval from the various authorities prior to execution of work. The contractor shall also be responsible for obtaining all materials and workmanship approval during execution and on completion of works including the connection of permanent power supply and KWH meter. All costs and charges required by the various authorities shall be included in the scope of work except the power connection charges which shall be paid by the client. LV switchboards and all necessary interconnecting cabling and associated earthing systems. Soft starters, variable frequency drives. Motor control centre. Submain distribution switch gear. Sub-main distribution cabling including all cable trays, brackets and cleats. Final sub-circuit wiring including all necessary conduit and trunking. All general and special purpose power accessories and switchgear. Standby Generator. UPS System Light fittings, switches and all connections for lighting installations. Lightning protection system, earthing system and harmonic protection. Central Battery Back up Emergency lighting system Analogue addressable Fire Alarm system. CCTV System. SMATV System. Voice / Data System. Lighting Control system. Access Control system.
Page 4 of 25
AL TADAWI HOSPITAL
PART B - SECTION 1 GENERAL REQUIREMENTS
Central Clock system. Public Address / Background Music system. Nurse Call System All necessary power supplies terminating in an isolating switch located within 2 meters of the mechanical equipment/panels. All coordination with other subtrades to supply and install power supply to the various equipment including all conduiting and ducts for the installation of the control wires by the equipment supplier. Any cost associated with removing existing services of electrical, control system and telephone system. 1.1
The work shall comprise the whole of the labour and, unless otherwise indicated, all the materials necessary to form a complete installation and such tests, adjustments and commissioning as are prescribed in subsequent clauses and as may otherwise be required to give an effective working installation to the satisfaction of the Engineer.
2.0
GENERAL
2.1
This specification is for the Mechanical and Electrical (MEP) works. However, the Instructions to Tenderers, Form of Tender, Conditions of contract, Note on Pricing, Preliminaries Section and any Supplementary Conditions of Contract applicable to Main Contract shall be applicable to this contract also.
2.2
The term Contractor used in the MEP documents and drawings is to be considered to mean the Contractor for MEP works.
2.3
Contractor shall be responsible for proper performance of all MEP systems in accordance with relevant standards and codes and design parameters listed hereinafter.
2.4
Provide all items, articles, materials, operations, sundries, labour, supervision, guarantees, allowances for overhead and profit, etc., to achieve a fully functionable and acceptable system.
2.5
The precedence of documents and drawings shall be as determined in the Main Contract. However, consider the specifications as an integral part of the work together with the drawings. Consider any item or subject omitted from one, but mentioned or reasonably implied on the other as properly and sufficiently indicated and provide the same under the work of this division.
2.6
The Contractor is responsible for developing his own take off of materials and is to make this available as requested to the Consultant.
3.0
EXAMINATION OF SITE AND DRAWINGS. Page 5 of 25
AL TADAWI HOSPITAL
PART B - SECTION 1 GENERAL REQUIREMENTS
3.1
Visit the site of the proposed works and obtain all information as to existing conditions and limitations and all proposed works on adjacent sites and in adjacent areas which might affect the works on this site, whether by Private Individuals or by Government Authorities or others.
3.2
Examine the documents including the Specifications and Drawings of all other Divisions before bidding and again before commencing any portion of the works.
3.3
Neither the Owner nor the Consultant will be responsible for any claim for extra work or expense resulting from the failure of the Contractor to be fully aware of Site Conditions.
4.0
PERMITS FEES AND INSPECTIONS.
4.1
Arrange for inspection of all work by the Local Authorities as and where applicable. This is to occur on an on-going basis throughout construction to avoid delays to the project. On completion of the work, present to the Consultant, for the Owner, final unconditional approval certificates of the Inspecting Authorities.
4.2
Pay fees/charges as levied by the Local Authorities for inspections, approvals, temporary services, connections, etc. at no additional cost to contract.
4.3
Before commencing any work on site, submit the shop drawings (approved by the Consultant) to the Authorities, as and where applicable, for checking and approval. Follow the progress of such drawings to permit the timely approval of them by the Authorities. Comply with any changes requested by the Authorities, but notify the Consultant immediately of any such change and obtain his approval.
5.0
CONTRACT DRAWINGS
5.1
The drawings for services works are design drawings, diagrammatic, and intended to convey the scope of work and indicate general arrangement and approximate locations of apparatus, fixtures, pipe and duct runs, etc. The drawings do not intend to indicate architectural or structural details. These cannot be used as shop drawings. Contractor must develop own detailed shop drawings for work at site.
5.2
Do not scale drawings. Obtain accurate dimensions to structure and architectural items from drawings of those trades. Confirm by site measurement. Verify location and elevation of all services (Water, Electrical, Telephone, Sanitary, Storm Drainage, Gas, etc.,) before proceeding with the work.
5.3
Make at no extra cost, any changes or additions to materials, and/ or equipment necessary to accommodate structural conditions (pipes or ducts around beams, columns, etc.)
5.4
Alter, at no additional cost, the location of materials and/ or equipment as directed, provided that the changes are made before installation and do not necessitate additional material.
5.5
Install all ceiling mounted components (Diffusers, grilles, detectors, light fixtures, emergency lights, fire detectors, loudspeakers, camera points, etc.) in accordance with the reflected ceiling drawings which are to be prepared by the Contractor and coordinated with all Page 6 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
trades. These must be submitted for approval and be approved before any work commences on site. 5.6
Leave space clear and install all work to accommodate future materials and/or equipment as indicated and/or supplied by other divisions of work of the contract. Install all pipe runs, conduit runs, cable trays, etc., to maintain maximum headroom and clearances, and to conserve space in shafts and ceiling spaces and under floors, and to provide adequate space for service and maintenance.
5.7
Confirm on the site the exact location of outlets and fixtures.
6.0
SHOP DRAWINGS, BUILDER’S WORK DRAWINGS AND MATERIAL SUBMITTALS
6.1
Within 15 days of award of Contract, submit programme of works. Alongwith the programme, submit a schedule detailing proposed submission dates for all Material Submittals, Shop drawings and Builder’s work drawings. Allow 15 days review period by the Consultant for each submission.
6.2
Contractor must obtain, from the Consultant, approvals of all materials, equipment and drawings within appropriate time to facilitate work at site, but, within 75 days latest, from the Contract award date. This period includes any required resubmissions till final approval is obtained.
6.3
Prepare drawings in conjunction with all trades concerned, showing sleeves and openings for all passages through structure and all insert sizes and locations.
6.4
Prepare composite construction drawings, fully dimensioned, of piping and equipment in tunnels, shafts, mechanical equipment rooms and areas, and all other critical locations to avoid a conflict of trades. Base equipment drawings upon shop drawings and include but do not necessarily limit to, all details pertaining to access, cleanouts, tappings, sleeves, electrical connections, drains, location and elevation of pipes, ducts, conduits, etc., obtained from consultation with, and agreement of, all trades involved.
6.5
Prepare drawings of equipment bases, pump pits, anchors, inertia slabs, floor and roof curbs, wall openings, trenches.
6.6
Prepare all drawings to scale as agreed with the Consultant. Generally, the scale shall be 1:50 for layouts and 1:20 for Details and Sections, etc. Forward these drawings, approved by all trades concerned to the Consultant for his records. Provide copies in a number as specified elsewhere in the Contract but not less than four sets.
6.7
Drawings production and presentation is a Contractual matter and any delay in making these submissions will be considered a Contractual delay and may be subject to Contractual penalties in accordance with Contract documents.
6.8
The Consultant will only consider shop drawings bearing the stamp of the Contractor and all Subcontractors involved. Check for all pertinent information such as physical dimensions, make, performance, electrical characteristics and indicate the intended use and location before submitting these drawings. Use reference symbols or enumeration to correspond to the design drawings. Page 7 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
6.9
Assume responsibility for accuracy of equipment dimensions related to space available, accessibility for maintenance and service, compliance with inspection authorities codes. Ensure that shop drawings indicate working weights of all equipment.
6.10
The submission of samples, wherever required by Consultant, will be subject to the same procedure as that of shop drawings. One set of such samples shall be required to be brought to site and kept there after approval till substantial completion.
6.11
The Consultant will mark the drawings "Approved / Approved with comments / Revise and Resubmit / Not Approved. Contractor shall resubmit accordingly.
6.12
The Consultant is not responsible for any delays caused by the inadequacy of the Contractor's drawings or his failure to obtain initial or subsequent approval. Any time taken by the Contractor to obtain approval after the originally scheduled date will be considered as a delay to the contract caused by the Contractor.
6.13
The Consultant's review shall not relieve the Contractor from responsibility for deviations from the Contract documents, unless he has, in writing, called the Consultant's attention to such deviations at the time of submission of drawings. The Consultant's approval shall not relieve the Contractor from the entire responsibility. Any approval by the Consultant shall be on the understanding that any item submitted shall be ordered with options and modifications to fully meet the specification. Any fabrication, erection, setting out or other work done in advance of receipt of stamped drawings shall be done entirely at the Contractor's risk and cost.
6.14
Furnish prints of the reviewed details to all other parties who may require them for proper coordination of their work, and furnish all information necessary for the work as a whole.
6.15
Obtain Manufacturers' installation directions to aid in the proper execution of the work. Submit two copies of such directions to the Consultant prior to installation, for use in inspecting the work.
7.0
RECORD (AS-BUILT) DRAWINGS
7.1
As the job progresses mark on one set of prints to accurately indicate the status of installed work. Have the prints available for inspection at the site at all times. 30 days before commissioning, finalise the As Built drawings and submit 2 sets as draft to the consultant for checking and approval. Upon approval, submit one set of transparencies and three sets of prints to the consultant for onward transmission to the client. Also submit a CD containing soft copies of all As Built drawings and technical details of all systems and equipments.
7.2
Show on the record drawings the installed inverts of all services entering and leaving the building and the property. Dimension underground services at key points of every run in relation to structure and building. Record all elevations for underground services in relation to floor level of the building and give reference datums to Municipal benchmarks.
8.0
OPERATION AND MAINTENANCE MANUALS
8.1
Upon successful commissioning, submit one draft of Operation and Maintenance Manuals for review and approval of Consultant. Separate binders shall be used as follows : Page 8 of 25
AL TADAWI HOSPITAL
1. 2. 3. 4. 5. 6. 7. 8. 8.2
PART B - SECTION 1 GENERAL REQUIREMENTS
HVAC. Electrical Low Current Systems. Fire alarm system. Central battery system. Plumbing and Drainage. Fire and Safety. Any Services other than above.
The minimum information required is as follows : 1. 2. 3. 4. 5. 6. 7.
Catalogs highlighting the Make, Model and other necessary details for all Material and Equipment installed. List of Local Agents / Suppliers for all Materials and Equipment with Telephone, Fax and Email address. Detailed description of systems operation. Procedures for Preventive, regular and the breakdown maintenance, with Manufacturer’s Operation and Maintenance Catalog for all Systems / Equipments. Commissioning data for all Systems / Equipment. List of recommended spares. (Ensure availability of the spares for at least 7 years). Diagnosis of faults / remedy action guidelines.
8.3
Upon approval of the draft by the Consultant, submit 4 set of manuals to Consultants for onward submission to the Owner. Atleast one set of the manuals shall contain originals of catalogues and brochures.
9.0
TEMPORARY SERVICE.
9.1
Do not use any of the permanent service facilities during construction, unless specific written approval is obtained from the Consultant and the Owner or where specifically allowed elsewhere in the Contract Documents.
9.2
In the event that mains power is not available or is not of sufficient capacity for commissioning and testing, supply, install and operate diesel generator(s) of the correct capacity. Any generator must have full safety features and must be maintained regularly to ensure site power at all times.
10.0
COOPERATION
10.1
Confer with all trades installing equipment which may affect the work of this division, and arrange equipment in proper relation with that equipment installed under all Divisions of the Contract.
10.2
Furnish all items to be built in by others, in time, complete with all pertinent information, commensurate with the progress of the work.
10.3
Store materials neatly and out of the way and clean up all refuse caused by the work daily.
11.0
EXISTING WORK AND EQUIPMENT Page 9 of 25
AL TADAWI HOSPITAL
PART B - SECTION 1 GENERAL REQUIREMENTS
Before this Contractor undertakes work in any area he must prepare a list of deficiencies in that area which affect his works, or which could possibly be construed as being caused by himself if not noted. In the event that such deficiency list is not prepared, then he shall be deemed responsible for such deficiencies. Any list shall be brought to the attention of the Consultant forthwith. 12.0
SUPERVISION.
12.1
The Subcontractor will maintain at site, as necessary for the performance of the Contract, qualified personnel and supporting staff, with proven experience in erecting, testing, and adjusting projects of comparable nature and complexity.
12.2
Before commencing work the Contractor will submit details of the proposed Engineers and Supervisors, including copies of their Certificates. If in the Consultant's opinion the proposed Engineers or Supervisors are not adequately qualified or are otherwise unacceptable, the onus is on the Contractor to submit alternates until such approval is given.
12.3
Where the Contractor's staff becomes during the Contract deficient in performance, the Contractor is to remedy the situation by immediate and appropriate replacement, to Consultant’s approval.
12.4
Approval of the Contractor's Engineers or Staff shall in no way prevent the withdrawal of that approval at any time during the Contract should the Consultant so desire. In the event of such disapproval, Contractor will be required to rectify the position as stated above within 14 days.
12.5
In the event of any negligent or severely detrimental behavior the Consultant has the right to order the removal from site of any Engineer, Supervisor, or worker on a “forthwith" basis.
13.0
CLEANING.
13.1
Each day as the work proceeds and on completion, clean up and remove from the premises all rubbish, surplus material, equipment, machinery, tools, scaffolds, and other items used in the performance of the work. Clean out dirt and debris and leave the buildings broom clean with no stains and in a condition acceptable to the Consultant.
13.2
Where electrical items form part of the visible finish in the rooms, protect from over-painting, etc. and give all items a final cleaning before handing over of the project.
14.0
ACCESSIBILITY, ACCESS PANELS AND DOORS.
14.1
Any item of equipment requiring maintenance shall be located so as to be accessible for maintenance or repair without removing adjacent structures, equipment, pipings, ducts or other materials.
14.2
Install all concealed equipment requiring adjustment or maintenance in locations easily accessible through access panels or doors. Install systems and components to result in a minimum number of access panels. Indicate access panels on as-built drawings.
14.3
Provide the respective Division of work with panels, doors or frames, complete with all pertinent information for installation. Page 10 of 25
AL TADAWI HOSPITAL
PART B - SECTION 1 GENERAL REQUIREMENTS
Ensure that access doors are installed in a manner to match the building grids where applicable. 14.4
Prepare detail drawings showing location and type of all access doors in coordination with other trades before proceeding with installation and hand these to the Contractor to obtain approval.
14.5
Size all access doors to provide adequate access and commensurate with the type of structure and Architectural finish. Should it be necessary for persons to enter, provide a minimum opening of 600 x 450mm.
14.6
Ensure proper fire rating of access doors in fire separations
14.7
Lay-in type ceiling tiles, if properly marked may serve as access panels.
14.8
The access panels shall be constructed and shall have finishing to match surrounding architectural construction and finishes and shall be to engineer’s approval or as specified elsewhere in the contract documents.
15.0
CONTRACTORS RESPONSIBILITY
15.1
The appointed Contractor shall accept full functional responsibility for all electrical services to meet the requirements of the Client/Engineer and generally in accordance with this specification.
15.2
The Contractors tender submission shall include for all the necessary material, plant, equipment and systems to meet the Engineer's approval whether specifically mentioned herein or not. The scope of work shall include, but not necessarily be limited to the following:-
15.3
(a)
LV site cabling.
(b)
All main and sub-main switchgear with allowance for future extension.
(c)
All internal LV and control cabling.
(d)
All emergency and escape lighting.
(e)
All lighting and lighting control system
(f)
All Fire alarm and life safety installations.
(g)
All low current system installations.
(h)
All telecommunication / data system installations.
(i)
All Security & Access control system installations.
(j)
Electrical services for mechanical services plant.
Design Parameters The electrical system equipment selection and installation shall comply with the particular requirements listed hereunder: Page 11 of 25
AL TADAWI HOSPITAL
15.4
PART B - SECTION 1 GENERAL REQUIREMENTS
Site Conditions All electrical equipment and components shall be selected and installed such as to operate satisfactorily and safely under the following climatic conditions. Maximum shade temperature in summer Direct sun temperature in summer Minimum ambient temperature in winter Relative humidity max Rusty atmosphere
15.5
50 deg. C 84 deg. C 2.8 deg. C 100
System of Supply Three phase, neutral and separate protective conductor (TT). The system of supply shall be at 380V / 400V 3Ph, 50HZ with a maximum short circuit capacity of 50 KA for 1 second at the main bus bar of the LV Switch Board. The electrical system shall have following system variations at the sub-station: Voltage +/- 6% Frequency +/- 4%
16.0
HIGH VOLTAGE NETWORK
16.1
The contractor shall be responsible for all negotiations with the DEWA to ensure that supplies are available to meet the construction programme. It shall be the Contractor's responsibility to execute all civil construction work connected with the HV Distribution Network as required by DEWA. All costs associated with acquiring permanent incoming mains supply including all civil works shall be included in the contract except for the power connection charges which shall be paid by the client.
17.0
AUTHORITIES APPROVAL.
17.1
The contractor shall be responsible for liaising with DEWA, ETISALAT/DU and the Civil Defence Authority and any other authorities after obtaining the Consultant's approval, in order to :-
18.0
(a)
Approve the shop Drawings, before ordering any equipment, and commencing with the installation.
(b)
Approve any excavation prior to installation;
(c)
Acquire main supply connection;
(d)
Approve the Fire Alarm, Telephone systems etc.
REGULATIONS The installation shall be carried out in accordance with the current edition and supplements of the following Regulations and Standards: (a)
Statutory Regulations of DEWA. Page 12 of 25
AL TADAWI HOSPITAL
19.0
PART B - SECTION 1 GENERAL REQUIREMENTS
(b)
It is the contractor's responsibility to ensure that the electrical work and installation meets with the requirements of the relevant authorities and there shall be no extra cost whatsoever paid by the client due to the requirement of the authorities.
(c)
IEE regulations with latest amendments.
(d)
All relevant BS, IEC Standards.
(f)
Other appropriate regulations under statute.
(g)
Requirements of BS 7671, 1992
DEFINITIONS For the purpose of this Specification:
20.0
(1)
The definitions given in the IEE Regulations for Electrical Installations apply.
(2)
The words "weatherproof" and "dust protecting" shall have the meanings ascribed to them in the relevant regulations.
(3)
The words "complete installation" in clause 1.1 shall mean not only the major items of plant and apparatus conveyed by the Specification, but all the incidental sundry components necessary for the complete execution of the works and for the proper operation of the installation, with their labour charges, whether or not these sundry components are mentioned in detail in the tender documents issued in connection with the contract.
PHASE IDENTIFICATION The cable connected to phase "R" shall be in all cases coloured Red, the cables connected to phase 'Y' shall be coloured Yellow, and the cables connected to phase ‘B’ shall be coloured Blue. The neutral conductor shall in all cases be Black. Any insulated earth wires shall be coloured Green or Green/Yellow. These colours shall be continued up to the actual terminals or cable lugs.
21.0
VOLTAGE DROP The voltage drop between the incoming LV switchboard and the extremity of any circuit shall not exceed 4% of the nominal supply voltage.
22.0
TELECOMMUNICATIONS INTERFERENCE The whole of the electrical installation work shall be so designed that there is an absolute minimum of interference with telecommunications, and the reception of broadcasting to BS 800 or any other relevant BS.
23.0
SEGREGATION OF SERVICES
Page 13 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
The armour of all cables, cable trays, trunking, ducts etc., shall be prevented from coming into contact with non-electrical services by minimum spacing of 150mm. Where this is impracticable they shall be bonded to the exposed metal of the other service through a protective conductor. 24.0
BUILDER'S WORK To reduce the necessity for cutting away and the like, certain holes and chases will be provided in the structure by the Contractor to the Engineer's instructions. The Contractor shall plan his work so that full advantage is taken of these provision's but it is the Contractor's sole responsibility to ensure that all holes and chases are in the required position and that any additional ducts, holes and chases necessary for the execution of his work in the in-situ concrete walls, floor slabs, columns and beams are executed in the early stage of construction of the building.
25.0
FOUNDATION BOLTS AND SUPPORTS
25.1
The Contractor shall arrange for the supply of, in advance of the delivery of the equipment, all necessary foundation bolts, nuts, plates, sleeves and anchorage’s as and when directed.
25.2
All cable trays, cable trunkings, light fittings and any other electrical components shall be installed and supported using a standard product recommended by the manufacturer, where such support is not a standard product range. The contractor shall only use galvanized material to engineer's approval as a support.
26.0
DESIGN AND STANDARDISATION
26.1
The Works shall be executed to facilitate inspection, cleaning and repairs for use where continuity of operation is the first consideration. All equipment supplied shall ensure satisfactory operation under working conditions. All plant containing rotating parts shall be capable of operating at speeds up to the maximum duty specified without vibration or excessive noise.
26.2
Corresponding parts throughout the Contract Works shall be made to gauge and shall be interchangeable wherever possible. The Contractor may be required by the Engineer to prove interchangeability by actual interchanging of the various parts.
26.3
Suitable provision by means of eyebolts or other means are to be provided to facilitate handling of all items that are too heavy or bulky for lifting and carrying by two men (70 kg).
27.0
MATERIALS, SHOP DRAWINGS AND WORKMANSHIP
27.1
The contractor shall be responsible to obtain the Consultant's approval on the detailed working drawings prior to ordering any equipment and commencing the installation.
27.2
Separate drawings shall be provided for each electrical system.
Page 14 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
27.3
The contractor shall be responsible for preparing a dimensional shop drawing showing the exact location and mounting height of the different components.
27.4
The contractor shall also be responsible for preparing enlarged scale details, sections and elevations wherever requested by the Engineer.
27.5
If requested by the Engineer, the contractor shall forward coordinated shop drawings showing the exact locations of all services.
27.6
In addition to the above, the Contractor shall forward schematic diagrams for all system. The schematic diagram shall include all details requested by the Engineer.
27.7
It is a requirement of the specification that the finished appearance of the plant in public areas is of a high architectural standard and all panels, covers, trim panels, finishes and the like shall be included to provide this required appearance to the satisfaction of the Engineer.
27.8
The whole of the equipment supplied shall be of durable finish and suitable for installation in a modern building.
27.9
The Contractor shall be responsible for ensuring that the components of each system are mutually compatible and integrated to form fully efficient systems complying with the Drawings and specifications.
27.10
All materials shall be, where applicable, in accordance with the IEE, BS Regulations, UL Specifications, Factories Act and Insurance Company requirements, where such exists, unless otherwise specified or agreed by the Engineer in writing.
27.11
All articles and materials specified to conform to the Standards shall be clearly and indelibly marked and stamped with the Standard number specified and other details required by the regulations, except where marking is impracticable when the relevant advice/delivery notes shall include the Standard number with which they are to comply.
27.12
All materials and workmanship shall be to the satisfaction of the Engineer, particular attention shall be paid to a neat orderly well arranged installation, carried out in a methodical competent manner. The contractor shall be responsible to replace all the unsatisfactory work to the engineer without any extra cost and to the standard required by the consultant. This also applies to any item which is found to be defective in service during the maintenance period or extended maintenance as appropriate.
27.13
No person shall be allowed to execute any type of work which is normally carried out by a skilled tradesman unless he is thoroughly experienced and proficient in the trade concerned. The Engineer shall have the option to require a tradesman to demonstrate his proficiency to the satisfaction of the Engineer.
28.0
SAMPLES Whenever requested, the Contractor shall provide a sample properly labelled of all lighting fittings, switches, fittings and other like accessories described in this specification or as specified by the Engineer. Page 15 of 25
AL TADAWI HOSPITAL
PART B - SECTION 1 GENERAL REQUIREMENTS
Such samples shall be submitted to the Engineer for his approval at his offices or elsewhere as directed, with all parts left loose, so that they may be taken apart for internal inspection by hand without the necessity of using spanners, screw drivers or wrenches. 29.0
STORAGE OF PLANT AND EQUIPMENT
29.1
All plant and equipment shall be stored off the ground under weather-proof cover until ready for incorporation in the works. All electrical apparatus shall be examined and cleaned before installation. All open conduit ends shall be fitted with plastic caps or suitable protective covering to prevent the ingress of foreign matter. All drums with cables shall be protected from direct sunlight.
29.2
Protect the building and structures from damage due to carrying out the work.
29.3
Protect all electrical works from damage. Keep all equipment dry and clean at all times.
29.4
The contractor shall be responsible for and make good any damages caused directly or indirectly to any walls, floors, wood work, brickwork, finishes, services etc.
30.0
PAINTING (ELECTRICAL PLANT AND EQUIPMENT)
30.1
Where it is the usual practice of the manufacturer of items such as electric motors, switchgear, control panels, and similar equipment, to apply a high standard of protective paint work in the shop before dispatch, this will be acceptable provided any damage to paint work on the plant and equipment which occurs is made good by the Contractor to the satisfaction of the Engineer. The interiors of control panels, switchboards and switchgear, finish paint (two coats work) shall comply with the appropriate standard for enamel finish and the exteriors of such panels shall be of an British Standard colour to give a minimum reflection value of 42%.
30.2
Instruments shall be finished dull black and control handles, push buttons and similar fittings shall be chromium plated or otherwise specially finished to the approval of the Engineer.
30.3
All items of equipment installed above the intalite suspended ceiling shall be painted with a matt black finish.
31.0
LABELS
31.1
Identification labels of 'traffolite' or other approved material engraved black on white both in Arabic and English language unless otherwise agreed, with not less than 5mm 'lino' style letters shall be fixed on or adjacent to all controls, switches and distribution gear by means of at least two brass screws. Socket outlets of voltage other than 220 volt AC shall be similarly identified or engraved.
31.2
The labels shall bear the identifications shown on the drawings, such as identification, designation, function and where necessary, phase and voltage.
31.3
Each distribution board shall be complete with a chart protected by transparent plastic and fixed securely to the inside of the lid indicating details of each circuit controlled by the board. These details shall contain points of utilization served, number and size of conductors and type of wiring.
Page 16 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
31.4
A permanent warning labels durably marked “Earth Connection Do not Disconnect” shall be permanently fixed in a visible position near each earthing and bonding connection.
31.5
A mimic diagram shall be provided on each main, submain panel board and on each motor control centre. INSPECTION AND TESTS AT MANUFACTURER'S WORKS
32.0 32.1
The Engineer shall have at all reasonable times access to the Contractor's premises to inspect and examine the materials and workmanship of the plant and equipment during its manufacture there, and if part of the plant and equipment is being manufactured on other premises, the Contractor shall obtain for the engineer permission to inspect as if the plant and equipment was manufactured on the Contractor's own premises. Such inspection, examination or testing, if made, shall not relieve the Contractor from any obligation under the Contract.
32.2
All work, materials and the like rejected shall be corrected or replaced as necessary at the Contractor's expense to the satisfaction of the Engineer.
32.3
Where the plant and equipment is a composite unit of several individual places manufactured in different places, it shall be assembled and tested as one complete working unit. All equipment will be tested at the maker's works to the relevant standards where applicable.
32.4
The aforementioned works tests carried out before delivery to the Site shall not in any way relieve the Contractor of completing satisfactory site tests after erection as specified.
32.5
The contractor shall give the Engineer reasonable notice, at least seven clear days in writing of the date on and the place at which any plant or equipment will be ready for testing as provided in the contract and the Engineer shall thereupon at his discretion notify the contractor of his intention either to release such part of the plant and equipment upon receipt of the works tests certificates or of his intention to inspect such part of the plant and equipment and shall then, on giving twenty-four hours notice in writing to the Contractor, attend at the place so named within seven days of the date by which the contractor has stated in his notice the said plant and equipment will be ready for testing. The Contractor shall forward to the Engineer six duly certified copies of the test readings.
32.6
Whether at the premises of the Contractor or of any of his sub-contractors, the Contractor except where otherwise specified shall provide, free of charge, such labour, materials, electricity, fuel, water, stores, apparatus and instruments as may be reasonably demanded, to carry out efficiently such tests of the plant and equipment, in accordance with the contract and shall give facilities to the Engineer to accomplish such testing.
32.7
Works tests shall also be carried out such that due consideration is given to the Site conditions under which the equipment is required to function. The test certifications shall give all details of such tests.
32.8
As and when any plant and equipment shall have passed the tests referred to in this clause the Engineer shall issue to the Contractor a notification to that effect.
32.9
The Contractor shall not pack for delivery or transport to Site any part of the plant or equipment until he has obtained from the Engineer his written approval to the release of such part for delivery after any tests required by the Engineer in terms of this clause have been completed to his satisfaction. Page 17 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
32.10
In particular, inspection and test at the maker’s works will be required for standby Generator, UPS and Electrical Switchboard.
33.0
TESTING AND COMMISSIONING AT SITE
33.1
Upon completion of the installation or part of the installation, the Contractor shall carry out and be responsible for the testing and commissioning all plant, equipment and integral systems, in stages if required, to ensure that it is in proper working order and capable of performing all of its functions in accordance with the specification and to the satisfaction of the Engineer. The Contractor shall be fully responsible for all equipment until each item of plant, equipment or system or part thereof has been tested, commissioned and accepted by the Engineer.
33.2
Any equipment damaged in commissioning shall be replaced by new plant by the Contractor at his own expense and the plant, equipment or system concerned shall be re-tested and commissioned. No instruction or action of the Engineer shall relieve the Contractor of this responsibility.
33.3
All testing and commissioning shall be carried out according to the requirements of the relevant Standards and regulations as may be stated or implied in this specification. Contractor shall prepare proper standard inspections, tests and commissioning forms and submit for approval by Engineers and Clients.
33.4
The Contractor shall give to the Engineer in writing at least ten days notice of the date after which he will be ready to make the specified tests on completion of installation. Unless otherwise agreed the tests shall take place within seven days after the said date on such day or days as the Engineer shall in writing notify the Contractor. The tests shall as far as possible be carried out under normal working conditions to the satisfaction of the Engineer and shall extend over such periods as he may direct.
33.5
If in the opinion of the Engineer the tests are being unduly delayed, he may by notice in writing call upon the Contractor to make such tests within ten days from the receipt of the said notice and the Contractor shall make the said tests within the said ten days and notify the Engineer of the days on which the said tests are to be made. If the Contractor fails to make such tests within the time aforesaid the Engineer may himself proceed to make the tests. All tests so made by the Engineer shall be at the risk and expense of the Contractor.
33.6
The Contractor shall provide all skilled labour, supervision, apparatus and instruments required for commissioning and testing and within a reasonable time thereafter furnish to the Engineer six certificates of all tests performed and accepted, signed by the Engineer, the Contractor and an authorized person acting on behalf of DEWA as prescribed in the appropriate Regulations and Specifications.
33.7
If any part of the plant or equipment fails to pass the specified tests, further tests shall, if required by the Engineer, be repeated. The Contractor shall, without delay, put in hand such modifications as are necessary to meet the requirements as described in the Contract and any expense which the Employer may have incurred by reason of such further tests may be deducted from the Contract Price.
33.8
The Contractor shall include for submission of working drawings for the electrical installation to the DEWA for approval and shall allow for the procurement of the DEWA test certificate upon completion of the building following inspection of the electrical installation by DEWA. Page 18 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
Acceptance shall not in any way absolve the Contractor of his responsibility for the performance of the plant or equipment after erection as a complete working system in all respects. 34.0
SYSTEM ACCEPTANCE.
34.1
The ultimate condition for system acceptance is that the Owner and Consultant have inspected the system and found it to be acceptable, and indicated this in writing. Issuance of the final payment certificate does not necessarily indicate system acceptance, neither does release of final payment holdback in whole or in part. The Consultant's acceptance may be contingent on any or all of the following if applicable:
34.1.1 Submit original copies of letters from manufacturers of all systems indicating that their technical representatives have inspected and tested the respective systems and are satisfied with the methods of installation, connections and operation. 34.1.2 Submit "as built" drawings and operation and maintenance manuals. 34.1.3 Train owner's maintenance staff. 35.0
CORRECTION AFTER COMPLETION.
35.1
Remedy all work in accordance with the General Conditions of Contract during the Maintenance period.
35.2
Attend immediately to any and all the defects occurring during the period defined above and repair in a manner to prevent recurrence. This contractor is responsible for all work required by other trades necessary to repair the works of this section, or necessary to repair damage caused by the failure of any part of this section.
35.3
Instruct all Suppliers and Manufacturers that guarantees on equipment will commence when the completed work is accepted and not from the date the equipment is put into operation. In the event that this condition is omitted by the supplier, or if subsequent cost to the Owner is involved. Contractor shall be liable for such costs.
36.0
GUARANTEES
36.1
The Contractor will guarantee all material and workmanship for at least 12 months after preliminary take over by the Owner.
36.2
All guarantees from equipment suppliers will be vested in the Owner, regardless of whether the Contractor who supplied the equipment is still associated with the project or not.
36.3
Guarantees will be full guarantees and will include all overhead, profit, incidental charges and sundries.
36.4
Where damage is caused to any other item by any failure of the item guaranteed, then the guarantee shall also include the costs incurred in rectifying that damage.
37.0
MAINTENANCE. Page 19 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
37.1.
Maintenance is defined as the Contractual Liability to maintain the equipment in working condition, PLUS the regular checks and servicing of equipment during the maintenance period, including all the consumables and spare parts to keep the equipment in best working order.
37.2.
Regular maintenance shall be as necessary, but in any event not less frequently than monthly. Breakdown calls shall be attended immediately.
37.3.
Maintenance period shall be 1 year from the date of handing over for all Electrical works.
37.4
Proper / satisfactory forms of procedure and schedules of maintenance shall be preared complying with manufacturer’s recommendations. These forms shall be submitted for approval by Engineer / Client prior to starting of the maintenance period. Also, a list of contact persons / parties for attending complaints / emergency around the clock shall be submitted.
Page 20 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
SCHEDULE OF MANUFACTURERS
Page 21 of 25
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38.0
PART B - SECTION 1 GENERAL REQUIREMENTS
SCHEDULE OF MANUFACTURERS All the materials supplied under this contract shall be from one of the manufacturers listed below. No alternate Makes shall be accepted unless all the listed Makes are unavailable. Materials proposed from listed Makes also must fully comply with Detailed Specifications. Country of Origin, where listed, must be complied. 1.
MDBs / SMDBs / DBs / MCCs / Changeover Panel / Isolator SR. 1. 2. 3.
MAKE ABB Siemens Schneider
ENCLOSURE Logstrup Siemens Schneider
(Assembled and tested only by the above respective Authorized Local Agent)
2.
Cables and Accessories
Ducab Riyad Cables Oman Cables Jeddah Cables
3.
Cable trays / Ladders Wire Baskets
Wiremold - UK OBO Bettermann – Germany Wibe – Sweden Cablofil – France
4.
Cable Trunking
Barton Wiremold MK OBO Bettermann
5.
Heat Resistant Cable (≥ 90 ºC)
Tekab Draka Riyadh Cables Ducab Pirelli
Page 22 of 25
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6.
PART B - SECTION 1 GENERAL REQUIREMENTS
Wiring accessories Make
White plastic
Slimline metal finish
MK MEM Legrand Clipsal
Aspect Spectra grid Mosaic Mega 2000
Contactum
Grid
insignia Ultra Synergy modern Gains Borough classic Flat Plate
7.
GI Box
Barton Decoduct Appleby Clipsal Elektra
8.
PVC conduits and Accessories
Decoduct Marshall Tufflex Clipsal
9.
G.I. Conduit and fittings
Barton Maruchi Walsal WM Interface
10.
PVC Coated Flexible GI Conduit
Kopex Adaptaflex Lappcable WM Interface
11.
Fire Alarm System
Simplex - USA Edwards – Canada Gent – 34000 - UK Notifier - USA Siemens – USA
12.
Fire Alarm Cable
Pirelli Firetuff GST Cavicell
13.
Earthing system, Lightning Protection System, Electronic Systems Protection, Surge Arrestors
14.
Emergency Lighting System
Prazissa - Germany GFS - Germany Cooper CEAG – Germany Enotec - Germany
15.
Capacitor Banks
Comar Schneider
Furse A. N. Wallis Erico Kingsmill
Page 23 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
ABB Nokian Capacitors 16.
Isolators
Moeller ABB Schneider GE Siemens
17.
Structured Cables / Fibre Optic
Corning – Corning - ME Nordex – Alpha Data Avaya–Telematics / Faronics Siemon – Beta Krone - IAL
18.
PA / Music System
Merlaude - France Bosch – Holland Bouyer – Germany
19.
Coaxial Cables
Raydex Belden Commscope Hrishman
20.
CCTV System / DVMR
21.
Intelligent Lighting Control System
Siemens – EIB Clipsal – C – Bus ABB - EiB F & G - EiB
22.
Variable Frequency Drives / Soft Starters
ABB Siemens Allen Bradley Moeller Danfoss
23.
Dimming System
Lutron Helvar Electrosonic Quantran Polaron Futronics
24.
Generator
Dawson Keith - UK Caterpillar - USA F.G Wilson - UK
25.
Cable Glands / Lugs
BICC Ducab Connect
Vicon–UK/USA Bosch – Holland Siemens – USA Bewator – UK Group 4 - USA
Page 24 of 25
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PART B - SECTION 1 GENERAL REQUIREMENTS
HAWKE CMP 26.
UPS System
Schneider – France Liebert – Italy Chloride – France GE – Swiss AROS - Italy
27.
Access Control System
ADC Technology - Singapore DSX – USA Bewator – UK Siemens-Germany Group 4 - USA
28.
Nurse Call System
Dukane Intercall Ackermann Executon Simplex
29.
Audio / Visual System
Sony JVC Panasonic
30.
Explosion proof Accessories
Legrand Simplex
31.
Clock System
Simplex Dukane
32.
Light Fittings
Refer Schedule of light fittings
*-------------------- * -------------------- * Note : All Fire related Materials e.g. Fire Alarm, Fire Fighting, Fire Stop Materials, Central Emergency Lighting, Fire Dampers etc., must have Local Civil Defence Deptt. approval.
Page 25 of 25
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PART B - SECTION 2 ELECTRICAL ACCESSORIES
SECTION 2 ELECTRICAL ACCESSORIES
Page 1 of 5
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PART B - SECTION 2 ELECTRICAL ACCESSORIES
SECTION 2
ELECTRICAL ACCESSORIES- INDEX
1.0
LOCAL SWITCHES
2.0
POWER OUTLETS
3.0
FUSE CONNECTION UNITS/DP SWITCHES
4.0
GI BOXES
5.0
ACCESSORIES PLATE FINISH
6.0
MARKING AND LABELING
7.0
MOUNTING HEIGHTS
Page 2 of 5
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PART B - SECTION 2 ELECTRICAL ACCESSORIES
1.0
LOCAL SWITCHES
1.1
The local switches shall be 20 amp. grid type one-way, two-way, intermediate or double pole as indicated on the drawings. Where more than one switch is indicated at any position multiple gang units shall be used.
1.2
Switches shall be of the quick start make, slow break type specially designed for AC circuits to BS Standards. The operation of the switch shall not depend wholly on the action of the spring. The switches shall generally be of the rocker operated type.
1.3
All switch boxes shall be supplied with adjustable steel grids and earthing terminals.
1.4
Generally, switch units shall be of the adjustable grid pattern and to be secured to the adjustable grid by means of screws. For flush mounting switches the switch-plate shall overlap all edges of the box by not less than 7mm. For surface mounting switches the switchplate shall finish flush with the edges of the switch boxes. Switches for water heaters and fan coil units shall be complete with neon indicator lights.
1.5
In Plant rooms the switch units shall be surface or flush as required.
1.6
Local switches shall be arranged in convenient positions for switching the various circuits and generally as indicated on the drawings.
1.7
The switches shall be of the same manufacture for a particular type of switch throughout the installation. All accessories in wet and damp areas shall be of the splashproof type to IP54 protection standard.
1.8
All switch boxes should be galvanised steel.
1.9
To ensure easy and correct connection of the conductors during installation, the necessary terminal shall be easily identified, grouped inline, upward facing, captive and backed out prior to the installation.
2.0
POWER OUTLETS
2.1
The switch socket outlets, shall be in accordance with BS Standard as appropriate and shall be of the three pin grounding type.
2.2
Switch socket outlets being fed from essential and UPS sources shall be separately identified with colour coded labels fixed on the plate. All rockers shall be with neon indicators.
2.3
Live contact of the socket shall be completely shuttered such that it is not possible to engage any pin of the plug into a live contact whilst any other pin of the plug is exposed.
2.4
All floor mounted socket outlets shall be fixed as part of the under floor trunking service boxes.
2.5
These outlets shall be of the same manufacturer throughout the installation.
2.6
The sockets shall have dual earth terminals as per BS 7671, 2001, Regulation 607. The sockets shall also have the facility to connect clean earth. Page 3 of 5
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PART B - SECTION 2 ELECTRICAL ACCESSORIES
3.0
FUSE CONNECTION UNITS/DP SWITCHES
3.1
These shall be of flush or surface mounting type as manufactured in compliance with BS Standard as appropriate. The fuse connection units shall incorporate integral switch, neon indicator and 13 amp fuse links. The 20A DP switches shall be with flex outlet in base and neon indication lights.
3.2
These shall be of the same manufacturer for a particular type of switch throughout the installation and shall be complete with the other accessories installed.
4.0 4.1
GI BOXES GI boxes to be provided with brass earth terminal to facilitate earth wire connection. The boxes to have sufficient number of 20mm and 25mm knockout and shall comply with BS 4662. Boxes to have adjustable lug for proper installations of wiring accessories. Extension ring to be used along with GI boxes, in places where the box is deep inside the wall, marble or concrete.
5.0
ACCESSORIES PLATE FINISH
5.1
All the wiring accessories shall be vandal proof. The accessories plate shall have the following finishes depending on the location where it is installed and on the feeding arrangement. Accessories shall be polished chrome type in all areas except as listed below : -
Accessories in plantrooms shall be metal clad type, and above false ceiling and inside floor service boxes shall be white polycarbonate.
-
Accessories in wet areas and as indicated on drawings shall be weatherproof to IP66.
-
All external outlets shall be weatherproof to IP-66.
-
Weatherproof range shall be suitable for semi recessed mounting and supplied with back boxes.
-
Isolators shall be IP65 for outdoor and plantroom installations
-
Isolators feeding the fire and safety equipments (such as fire pumps, lifts, smoke extract fans, basement ventilation fans, etc) shall be fire rated for 120 min.
-
Accessories in Medical gas rooms and in the Oxygen tank yard shall be explosion proof type.
-
All switch plates including SSOs are to be coordinated with tiling layouts by prior agreement with the Architect on site.
-
All sockets within bed head units (other than patient rooms) shall be poly carbonate
Page 4 of 5
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6.0
PART B - SECTION 2 ELECTRICAL ACCESSORIES
MARKING AND LABELING All circuits for lighting and power sockets shall be labeled and marked. A dedicated label shall be engraved at the socket front face, another label shall be provided at the back side of wiring accessory All UPS sockets shall be provided in different color (RED)
7.0
MOUNTING HEIGHTS Mounting heights of accessories shall be as detailed on Architectural drawings and in compliance with statutory authority requirements. Installation shall be carried out as detailed in fit-out plans. Proper co-ordination shall be ensured with relevant subtrades for installation of accessories on furniture, medical service panels and the like. All necessary containment and backboxes shall be provided to form a complete installation to the approval of the Engineer. Such containment shall include but not limited to conduits, ducts, raceways, skirting / DADO / Underfloor trunking and boxes, etc. In General, the mounting heights shall be as follows: Lighting Switches Switch socket outlets Flex outlet A/C Flex Outlet Water Heater Kitchen equipments
1200mm top above FLL 450mm bottom above FLL near to unit near to Water Heater. as per kitchen layout drawings
Note: The 20A double pole switch shall be manufactured to BS 3676 Part 1 1989 and shall be fitted with neon indicator. The double pole switch supplied for the water heaters shall be engraved ‘Water Heater’.
Page 5 of 5
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PART B - SECTION 3 STANDBY DIESEL GENERATOR
SECTION 3 STANDBY DIESEL GENERATOR
Page 1 of 10
AL TADAWI HOSPITAL
PART B - SECTION 3 STANDBY DIESEL GENERATOR
SECTION 3 STANDBY DIESEL GENERATOR INDEX
1.0
SCOPE OF WORK
2.0
CHARACTERISTICS OF GENERATOR – GENERAL
3.0
DIESEL ENGINE AND ANCILLARIES
4.0
TESTING
5.0
FUEL SYSTEM
6.0
SOUND INSULATION OF THE ROOM
7.0
EXHAUST
8.0
BATTERY
9.0
CABLES
10.0
SELECTION
11.0
BMS INTERFACE
Page 2 of 10
AL TADAWI HOSPITAL
1.0
PART B - SECTION 3 STANDBY DIESEL GENERATOR
SCOPE OF WORK The contractor shall supply , install , test and commission a prime generating set with separate fuel tank of suitable capacity to run the set for 9 hours at rated conditions. The set shall be complete with all ancillary plant such as starting , fuel , fuel pump, fill in point, fuel piping, exhaust , cooling , control and alarm panels , circuit breaker interconnecting wiring , cabling and all other equipment required for the operation of the sets as per but not limited to this specification .
2.0
CHARACTERISTIC (general) OF THE GENERATOR SETS Ratings
2.1
Output
-
400V , 50 Hz ,1500 Rpm ,0.8 p.f., 1850 KVA 3 phase.
Ambient temperature capability
50 degree centigrade . ( Manufacturer’s deration curves shall be provided )
Maximum speed
1500 Rpm
-
If the site rating is less than stated rating then a detailed derating chart from the manufacturer shall be provided. The offered gensets shall be suitable for installation in closed purpose built generator room. 2.2
Standards The equipment and components shall comply with all relevant British / ISO / IEC standard Specifications. The machines shall be suitable for installation in an enclosed, ventilated engine room shown on the relevant drawings.
2.3
DRAWINGS Reference Drawings : Basement - 1 power layout and Electrical schematic diagram.
2.3.1
The drawings are for tender purposes only and are to be read in conjunction with this Specification. Any discrepancy between the drawings and the Specification and any matter which requires clarification shall be referred to the Engineer during tender period. The Contractor shall be responsible for the preparation of detailed installation drawings for the complete works including associated builders work, and shall submit all drawings to the Engineer for approval prior to the commencement of any work. Approval of such drawings by the Engineer does not relieve the Contractor of his responsibility to provide an installation suitable in dimension, construction, function and finish for the purpose intended. Page 3 of 10
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PART B - SECTION 3 STANDBY DIESEL GENERATOR
This Specification and the Drawings are intended to indicate generally the arrangement of apparatus required, but the Contractor will be deemed to have included in his tender anything necessary to leave the installation complete and in proper working order to the satisfaction of the Engineer whether or not such items are mentioned in the Specification or shown on the Drawings. 3.0
DIESEL ENGINE AND ANCILLARIES
3.1
Diesel engine The diesel engine shall be 4-stroke, either normally aspirated or supercharged and aftercooled, water cooled, equipped with the following : -
3.2.
Heavy duty air-cleaner, with service indicators Crank case breather Lubricating - oil engine driven pump Lubricating - oil simplex filter, with replaceable elements Lubricating - oil cooler Engine - driven jacket water pump Fuel filter, with service indicators Flexible fuel lines Fuel priming pump Dry exhaust manifold, fitting and flange Flywheel and flywheel housing Governor, Electronic Manual and automatic shut-off Oil pressure gauge Cooling water temperature gauge Digital Tachometer Electric starting - 24VDC.
Air filters Air filters shall be suitable for use in the environmental conditions which are likely to arise occasionally, with the atmosphere highly polluted by blown sand. They shall be fitted with an ‘Air filter condition’ indicator of the vacuum type which shall be fitted to the air inlet manifold.
3.3
Cooling Thermostatically controlled bypass valves shall be fitted to the engine cooling water system to maintain cooling water at optimum temperature.
3.4
Governor The governor shall be Electronic type. It shall control the speed within the limits laid down in the respective Standards.
3.5
Engine shut - off. The engine shall be fitted with a mechanically operated device which will shut off the fuel supply to the engine when any of the specified alarm conditions occur. The device Page 4 of 10
AL TADAWI HOSPITAL
PART B - SECTION 3 STANDBY DIESEL GENERATOR
shall be fitted with one normally open and one normally closed contact which will trip and lock-out the generator circuit breaker in the event of the automatic device operating. Micro switches shall not be used in any direct current circuit nor in any inductive circuit. 3.6
Starting System The electric starting equipment shall be so designed that :-
3.7
(a)
at engine speeds in excess of the minimum firing speed it shall be impossible to complete the starting circuit and
(b)
not more than three consecutive attempts to start may be made in any period of 1 minute, each starting period and the period between such consecutive attempts being automatically timed controlled by the equipment. At the failure of the third attempt the starter circuit shall be locked out pending manual resetting.
Generator The generator shall be of the brushless, revolving field, solid - state exciter type, single bearing construction, directly coupled to and sharing a common high bed plate with diesel engine and the radiator. The generator shall be complete with all necessary cooling fans, excitation and voltage regulating equipment. The excitation system shall not include a commutator. The generator shall be star connected. The generator shall be capable of maintaining the continuous maximum rated output when operating within +/- 1% of rated voltage and at rated power factor. The critical speed shall exceed twice the overspeed test value. All windings shall be tropicalised and suitably impregnated to withstand the site ambient conditions. The generator shall meet the following requirements : IEC 34/1 standard requirements Class H insulation with tropicalisation and anti-abrasion Three - phase sensing. Drip - proof enclosure, IP22 Pilot shaft alignment 150 % over speed capability. Less than 5 % wave form deviation Standard paralleling capability Volts per Hertz, generator mounted, digital automatic voltage regulator, three phase sensing , assuring less than +/- 1% voltage regulation Adjustable voltage droop for parallel operation Adjustable voltage gain to compensate for engine speed droop and line loss. Less than 50 Telephone Influence Factor (TIF) Less than 3% Total Harmonics Factor (THF) Radio interference suppressed to the limits specified in BS 800 The generator shall also be equipped with manual voltage control. Page 5 of 10
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3.7.1
PART B - SECTION 3 STANDBY DIESEL GENERATOR
Exciter The core and poles of the exciter shall be made of high permeability low loss steel stamping tightly clamped and secured to minimize magnetic noise. The characteristics of the exciter shall comply fully with the operational requirements of the alternator in matching the required loading conditions. PM excited generators shall be provided.
3.7.2
Ventilation of generator and exciter. The generator and exciter shall incorporate shaft mounted fans of sufficient capacity to provide the machine cooling effects necessary to comply with the temperature requirements of the Specification when operating in the specified ambient conditions.
3.7.3
Voltage Regulation Continuously active, quick acting automatic excitation control equipment responsive to the generator line to line voltage and loading conditions shall be provided to maintain the alternator voltage within the prescribed limits. Equipment will be based wholly on static state devices. Variable Regulation capability regulators shall be preferred. Diode monitor and loss of excitation protection shall be provided. The equipment shall include all selector switches, indicating instruments, rectifiers, resistors and any other auxiliary components necessary for the satisfactory opeation of the plant. A voltage setting device capable of adjusting the required voltage in steps of 1 volt between the limits of 90% and 110% of normal voltage at any load within the rating of the machine shall be mounted on the control panel.
3.8
When the generator maximum continuous load at rated power factor is rejected, the regulator equipment shall be capable of limiting the generator momentary over voltage to a value not exceeding 125% rated voltage and shall restore the voltage to within 1% of the nominal present value within 3 seconds. Over-voltage/undervoltage and overexcitation protection shall be provided. Set Mountings The diesel engine, the generator and exciter, and the radiator shall be mounted a common welded steel bedplate. Where flange mounted generators are not employed, the bedplates shall be stress relieved before machining. Lifting points shall be provided on the bedplate. Suitable anti-vibration mounting shall be supplied for the diesel generator unit, and all set mounted ancillary apparatus. Flexible connections shall be provided to all exhaust, air, fuel and water piping to avoid fracture due to vibration and to minimize conduction of noise. Any necessary foundation bolts shall be supplied under this Contract.
3.9
Safety Guards. All moving parts shall be adequately guarded in accordance with BS 1649 and to the satisfaction of the Engineer, in order to prevent danger to personnel. Page 6 of 10
AL TADAWI HOSPITAL
3.10
PART B - SECTION 3 STANDBY DIESEL GENERATOR
Generator set control equipment The control equipment is designed to start and stop the set automatically from a remote signal. The signal will be issued by the Automatic mains failure panel as described elsewhere. The generator set control equipment shall be set mounted and shall be based on microprocessor based system to provide maximum system flexibility The control function shall be provided with an OFF/ MANUAL/AUTO/COOLDOWN STOP switch.
3.10.1 The following digital measuring instruments with liquid crystal display shall be fitted : -
an ammeter - 3 phase a voltmeter - 3 phase a 3 position ammeter/voltmeter selector switch a frequency meter, in Hz and rpm an hours - run meter. power factor meter Coolant Temperature KW (total & per phase) KVA , KVAR , KW-Hr meter Oil Pressure System Diagnostic
3.10.2 Automatic shut-down and lock-out circuits shall be fitted for : -
low oil pressure Over voltage/Under voltage Low coolant level Over current Reverse power
3.10.3 Indicator lamps shall be fitted, together with a lamp-test push-button for : -
low oil pressure shut down high water temperature shut-down overspeed sit-down failure to start/overcrank Emergency stop Fault shutdown/Alarm. 2 spare external faults.
3.10.4 A manually re-set, master shut-down relay shall be provided on the control panel, so arranged that upon the occurrence of the specified fault conditions the relay shall automatically :(a) (b) (c) (d)
break the closing circuit of the circuit-breaker. make the tripping circuit of the circuit-breaker. stop the engine. close the voltage free contact for a remote alarm. Page 7 of 10
AL TADAWI HOSPITAL
PART B - SECTION 3 STANDBY DIESEL GENERATOR
Simultaneously, an audible alarm shall be given, and the cause of the stoppage shall be displayed and remain displayed on the control panel and the building management system until the alarm device is manually re-set. When the control selector switch is in the AUTO position, the audible alarm shall be operative. The control panel shall have a self-diagnostic feature to asses the condition of the various senders and sensing components. An adjustable run on “off load” timer, shall be fitted to provide cool down running. All individual circuits such as voltmeter, shutdown circuits etc. shall be adequately protected by fuses. All control wiring shall be carried out in PVC insulated cable termination and relative terminals shall be clearly marked. Engine wiring shall be protected by non-metallic conduit. The control equipment shall also include a breaker as shown on drawings complete with short-circuit magnetic and thermal overload trips, separately housed in a sheet steel enclosure adjacent to the control panel. A shunt trip & Auxiliary contacts shall also be provided. A separate enclosure fixed on the breaker, enclosure with busbars extending from the breaker shall be provided and the outgoing power cables shall be terminated on the busbars. Separate busbar cubicle must be provided to enable termination of multicore cables. 4.0
TESTING The set shall be subjected to the following works tests at the factory prior to Shipment. All Certificates must be submitted for prior approval. The same tests shall be repeated at the Supplier’s local facility before delivery the set to site. (1)
General inspection of equipment to check its compliance with specification
(2)
Timed Start from operation of push button to acceptance of full load.
(3)
1/2 hour 50 % load 1 hour 100 % load
(4)
Determination of voltage and frequency regulations under following load changes : (a) (b)
No load to 110 % load in steps not exceeding 25% 100 % load to no load in a single step .
(5)
Operation of all protection circuits by simulation.
(6)
Operation of UPS fed loads on normal and generator supply (after installation at site and commissioning). Page 8 of 10
AL TADAWI HOSPITAL
5.0
PART B - SECTION 3 STANDBY DIESEL GENERATOR
Fuel System Fuel tank with capacity suitable for 24 hours 100% operation shall be made of stainless steel sheets and fuel pipework shall be with MS pipes and fittings. The tank shall be supplied and installed, fully piped up, to provide the service requirements of the genset and as shown on drawings The tank shall be complete with filler cap, contents gauge, overflow pipe, vent pipe and sludge valve. The fuel tank shall be filled as required for testing and commissioning and shall be full at the time of handing over.
6.0
Sound insulation of the room and Vibration Criteria The contractor shall provide sound level data of the proposed equipment for review of the Engineer. The noise level outside the genset room shall not exceed 75 dBA at 3 meters. Attenuators shall be provided for radiator discharge and air intake. The air intake requirements shall be coordinated at site. The generator base mounted springs shall be able to absorb 95% of the Engine vibrations. Any louvers provided in generator room shall be of the acoustic type.
7.0
Exhaust All exhaust gases shall be suitably piped outside the genset room . The engine shall be efficiently, silenced and be complete with a silencer and all fixings to attach the silencer to the generator room ceiling. In addition to erecting the silencer the Contractor shall also be responsible for providing and erecting the fittings necessary to carry the tail pipe through the generator room wall. All fixings shall be anti-vibration type where required and galvanized. Exhaust pipes of the proper diameter, properly insulated with 50 thk rockwool insulation and clad with 22G aluminum sheet, shall be supplied and installed. They shall run from the exhaust silencers to the outside . The exhaust pipes shall terminate with an adequate bend or cap to prevent ingress of rain. The total exhaust noise attenuation shall be to 25dBA.
8.0
BATTERY STARTING The equipment shall include an adequately rated maintenance free lead acid starter battery together with a suitably rated charger. The battery charger shall be supplied from the mains (standby supply) and an engine driven dynamo shall be used for boost charging . The battery shall be protected against accidental, mechanical or electrical damage and shall be housed in a purpose built rack. The charger shall be mounted remote from the engine and shall include a battery charge fail alarm. Without power supply to the charger, the battery shall be capable of providing no fewer than four starting cycles within a period of 5 minutes. Upon restoring power supply to the charger immediately thereafter, the charger shall be capable of restoring the battery, within 30 minutes, to a condition in which one more starting cycle can be completed. The following instrumentation and protection shall be provided :
Page 9 of 10
AL TADAWI HOSPITAL
9.0
PART B - SECTION 3 STANDBY DIESEL GENERATOR
*
Charger failure
*
Battery voltmeter
*
Charge / discharge ammeter.
*
On/off switch.
CABLES All cables shall be supplied in accordance with local Electricity Authority and Civil Defence regulations . A schedule of loads and cable sizes shall be submitted to the Engineer for approval prior to commencement of any work.
10.0
SELECTION Contractor shall provide detailed calculation and load shedding scheme to match the capacity of the specified generator.
11.0
BMS INTERFACE The Generator Control panel shall be equipped with necessary hardware and software for integration with BMS for monitoring the following items : 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13.
Voltage Frequency Load Current Diesel level. Generator status (Auto / Manual). High water temperature alarm. High water temperature shutdown. Low oil pressure alarm. Low oil pressure shutdown. Fail to start shutdown. Overspeed shutdown. System diagnostic shutdown. Battery Status.
Page 10 of 10
AL TADAWI HOSPITAL
PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
SECTION 4 LOW VOLTAGE DISTRIBUTION
Page 1 of 13
AL TADAWI HOSPITAL
PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
SECTION 4 LOW VOLTAGE DISTRIBUTION INDEX 1.0
MAIN LOW VOLTAGE SWITCHBOARD – FORM 4
2.0
TESTS
3.0
DRAWINGS AND INFORMATION
4.0
AUTO CHANGE OVER PANEL
5.0
SUB MAIN DISTRIBUTION BOARD
6.0
FINAL DISTRIBUTION BOARD
7.0
AIR CIRCUIT BREAKER
8.0
MOULDED CASE CIRCUIT BREAKER
9.0
DISCONNECT SWITCHES
10.0
EARTH LEAKAGE CIRCUIT BREAKER
11.0
CONTACTORS / OVERLOAD RELAYS / CONTROL RELAYS / TIMERS
12.0
INDICATION LAMPS / PUSH BUTTONS / SELECTOR SWITCHES
13.0
SITE CONDITION
14.0
CODES AND STANDARDS
15.0
SWITCH BOARD OPERATORS MAT
16.0
VOLT METER AND AMMETER
17.0
COORDINATION
18.0
ENERGY MONITORING UNIT
19.0
THERMAL IMAGING
Page 2 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
1.0
Main Low Voltage Switchboard and Main Distribution Boards – Form–4b Type-6
1.1
The main LV Switchboard shall be of a free standing, cubicle type modular construction system conforming to fully type tested designs, incorporating ACB's, MCCB's busbars, fuses, measuring equipment etc. all as required and complying to the latest editions of BS EN 61439-1. The switchboard shall be from a reputed manufacturer with an established and IEC 439 - 1 certified quality assurance system to ISO 9001. Non certified manufacturers will not be acceptable. All circuit breakers and busbar ratings shall be as per the load schedules and drawings. All circuit breakers and busbars shall be rated for 50°C. All auxiliary power supplies shall be provided as per the manufacturer's requirement.
1.2
Design & Construction:
1.2.1
Switchboard construction shall be designed to FORM 4, Type 7 standards for panels as shown on drawings in accordance with IEC 439-1/ BS EN 61439-1. Busbars shall be in a separate chamber, fully segregated from the rest of the switchboard. Additional insulating material shall be provided behind the doors/plates of the busbar chamber. Individual functional units shall be located in independent compartments.
1.2.2
In addition to compliance with FORM 4 standards, the switchboard shall be successfully tested for safe containment of an internal arcing fault. Suitable ducts and vents for individual functional units and busbars shall be incorporated in the switchboard to safely divert the resultant over pressure and arcing away from the operator and adjacent functional units. Allowing the gases to escape through the door into the cable way or out through the back of the board will not be acceptable.
1.2.3
The switchboard shall be of a modular construction and be extendable on both sides. Welded construction switchboards will not be accepted. The degree of protection shall be at least IP 42 as defined in IEC 529.
1.2.4
Enclosures shall be made of sheet steel. The basic framework should be roll-formed from 1.6 to 2mm electro-galvanised steel coated with high-solid enamel, polyester electrostatic spray and oven baked. The doors and panels shall be iron-phosphate steel, coated like the framework but also with primer. The color shall be RAL 7032 (light grey) or equal. The base frame shall be of minimum 3mm thick Electro galvanized steel.
1.2.5
Compartments shall be easily accessible for maintenance purposes. Barriers shall be included between each compartment to contain an internal fault as defined in BS / IEC standards to ensure safe maintenance on any outgoing circuit when the remainder of the board is alive. Each compartment shall be provided with a separately fixed thermostat controlled heater at the bottom.
1.2.6
The maximum height of the enclosure shall be 2400 mm. All meters, lamps, operating handles shall be within a maximum height of 2000 mm. All dimensions shall be of uniform appearance. All live conductors shall be shielded in such a manner that they cannot be accidentally touched when the doors are open. All doors and plates shall be interchangeable and may be hinged left, right, top and bottom as standard. Doors shall be provided with an integral gasket and earth stud and a range of locks to meet all regulations. Page 3 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
1.2.7
All internal separations shall be from standard pre-fabricated plates. The usage of Bakelite, fiber sheets or any other material to provide internal separation will not be acceptable. The internal separation between compartments and sections shall be at least IP 40.
1.2.8
Suitable cableways shall be provided for each functional unit section. There shall be front access for cabling purposes. It shall be possible to safely terminate or work on the outgoing cables of any functional unit without having to switch off the main breaker or adjacent functional units. Switchboards shall be suitable for bottom or top cable entry as specified. All openings and entries shall be vermin proof. Switchboards shall be arranged such that safe access (front, rear, side) may be readily obtained. Adjustable gland plates, adequate channel frames and cable clamps for cable supports shall be provided.
1.3
Busbars:
1.3.1
Busbars shall be of rectangular cross section HDHC tinned copper and suitably rated for continuos operation. The main busbar rating shall be the same throughout the entire length of the switchboard. The busbars and primary connections shall comply with BS 159. The surface temperature of the busbar shall not exceed 85°C over an ambient of 50°C. Connections to incoming circuit breakers shall be of the same rating.
1.3.2
Busbars shall be installed in a separate chamber and shall run along the whole length of the switchboard, which allows for easy extension in the future. Vertical droppers if any, shall run behind each functional unit section. Busbars shall be rigidly supported along their entire length. The busbar supports shall be of a high-grade polymer. The mechanical and dielectric strength of the busbars and supports shall be capable of withstanding the worst fault conditions and as per ASTA testing requirements.
1.3.3
The main busbar system shall be of a parallel 2 bar per phase arrangement . All switchboards shall be complete with a neutral and earth bar running along the full length of the panel. The cross section of the neutral bar shall be same as that of the phase conductor and that of the earth bar is at least half the size as that of the phase bar.
1.3.4
Busbars and connections shall be color coded for phase identification and shall conform to the phase sequence R-Y-B, counting from left to right ,upper to lower and from near to remote when viewed from the operating side of the switchboard.
1.3.5
Under no circumstances will common earth / neutral bar be acceptable. Earth bars, neutral bars and links shall be so located and mounted that access to them is not obstructed by the structure or wiring of the switchboard and so that all outgoing neutral and earth conductors can be readily and safely connected and disconnected without moving other cables or disconnecting the incoming supply to the switchboard.
1.3.6
The main busbar shall be certified to withstand a fault level of at least 50KA for 1 second. This certificate shall be from ASTA or an independent and recognized testing authority.
1.4
Panel wiring / Terminal Blocks / Labels:
1.4.1
All internal and control wiring shall be 600 / 1000V PVC insulated stranded copper cable to BS 6231. All cables shall be adequately rated and not less than 2.5 sq.mm. , run on PVC cables trays .. Each cable shall be properly terminated at both ends with loops. When wiring is across door hinges, it shall be enclosed by a flexible PVC tubing and be looped to Page 4 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
permit the opening of doors and removal of components for inspection. Plastic ferrules with correct numbers shall be fitted on all wires to correspond with circuit number and diagram. 1.4.2
Terminal blocks for power and control wiring shall be of Cage Clamp connection technique in which the only tool required is a flat – bladed screwdriver .Once the conductor is inserted ,the stainless steel cage clamp shall automatically provide the correct clamping force for a secure connection. Screws terminals shall not be used. Cables having the same number shall be terminated at adjacent terminals and connected by means of cable jumpers at the terminal block. Terminal blocks shall be grouped according to the working voltage, power circuit and control circuit. 10% of spare terminals and not less than two numbers shall be provided on each group of terminal block.
1.4.3
All Circuit breakers, Feeders' etc. shall be provided with labels of adequate dimensions. Labels shall be of traffolyte having a white background with engraved letters. They shall be screw fixed on the panel.
1.5
Metering and indication:
1.5.1
The Mains supply incomer shall be provided with ammeter, a voltmeter and RYB phase indication lamps. KWH meter shall be provided and shall be of an approved type and make by the Utility. Ammeters and voltmeters shall be as specified elsewhere.
1.5.2
Indicating lamps shall be of the long life LED type. They shall be connected through individually fused circuits tapped from the outgoing side of the main switch.
1.5.3
Internal and auxiliary wiring shall be of the 600/1000V grade with a minimum cross section of 2.5-sq. mm.
1.5.4
For the generator supply incomer circuit breaker, the following meters and indication shall be provided:
2.0
(a)
Digital Ammeters
(b)
Digital Voltmeter
(c)
Frequency meter 45-60 Hz range
(d)
Hour run meter
(e)
Power factor meter
(f)
kW meter
(g)
Indicating lamps to indicate each phase live (red, yellow & blue).
Tests: The panels shall undergo the following tests in the factory before despatch: a)
Primary Injection Test for all Circuit Breakers.
b)
Secondary Test for all protective relays and meters, CT polarity tests.
c)
Millivolt Drop Test
d)
HV Test 2.5kV for 1 min. Page 5 of 13
AL TADAWI HOSPITAL
e)
Insulation test
f)
Function Test
PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
These tests shall be carried out in presence of the Consultant. 3.0
Drawings and Information: The vendor shall furnish following submittal after placement of order: i)
General Arrangement drawing showing front view, plan, foundation plan ,floor cutouts and trenches for external cables , elevations, transport sections and weights.
ii)
Sectional drawings of various types of feeders, panels showing general constructional features, mounting details of various devices, busbars, current transformers, cable boxes, terminal boxes for control cables etc.
iii)
Schematic and control wiring diagrams for each type of feeder and protection including indicating devices, metering instruments, alarms, space heaters etc.
iv)
Terminal plan showing terminal numbers, ferrule markings ,device terminal numbers, functions etc. and
v)
Control wiring diagrams.
Vendor shall provide a copy of the above drawings for approval and a copy of the as built drawings for records. The information furnished shall include the following: i)
Technical literature giving complete information of the equipment.
ii)
Erection, Operation and maintenance manual complete with all relevant information, drawings and literature for auxiliary equipment and accessories, characteristics for relays etc.
iii)
An equipment list with detailed specifications and make.
4.0
Auto Change Over Panel
4.1
General The Automatic Transfer switch shall be of mechanically and electrically interlocked type to exclude any possibility of coupling together the normal and emergency sources. To ensure continuity of service both air circuit breakers shall have two stable position, Closed and Open. It shall be possible to manually operate each air circuit breaker (or unprotected circuit breaker) in the event of the absence of control voltage. For maintenance purpose, the transfer switches shall have a neutral position with both air circuit breakers in the Open position. It shall also be possible to lock each air circuit breaker in the Open position. Page 6 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
Each air circuit breaker (or unprotected circuit breaker) of the transfer switch shall be equipped with auxiliary contacts and alarm contacts (Tripped status indication). 4.2
Construction Operations of the air circuit breakers (or unprotected circuit breaker) shall be by individual momentarily energized motor on each breaker. The mechanical interlock for 2 air circuit breakers side by side may be achieved with two cables. ATS switch shall be equipped with microprocessors / PLC based controller to carry out the following functions : a.
Switching from one source to another depending on the presence of voltage on the transformer / generator.
b.
Control of engine generating set.
c.
Load shedding and reconnection of non priority circuits.
d.
Switching to the generator source in the event of failure of normal source.
e.
Circuit breaker status indications shall be displayed in front of the controller (On / Off fault).
f.
Test push button shall be provided on the front of the controller to check the transfer from normal to emergency and return to normal source.
g.
Controller shall be equipped with adjustment of time delays infront.
5.0
Sub Main Distribution Board:
5.1
The panel board shall be wall mounting type constructed to BS EN 61439, Form-2b Type-2 requirements. It shall be constructed of minimum 2mm thick electro-galvanised steel coated with high solid enamel polyester electrostatic spray and oven baked. The color shall be RAL 7032 (light grey). The degree of protection of the board shall be IP54. Submain panel boards shall be provided with minimum 2 no. pad locks with locks and key.
5.2
Busbars shall be of hard drawn, high conductivity tinned copper and rated for continuos operation. The phase bar, neutral bar and earth bar shall be identified by approved colour codes. The neutral bar shall be of the same cross section as the phase bus bar. A sub feed neutral assembly with a removable link for isolation shall be available as an integral part of the Distribution board. Earthing bar assembly shall also be available to facilitate the connection of earth continuity conductors.
5.3
All Circuit breakers , Metering and Busbar ratings shall be as per the load schedules and drawings.The main MCCB and the feeder breakers shall be of appropriate capacity.
5.4
Panel wiring, Terminal blocks and labels shall be as specified for the Main Distribution Boards.
Page 7 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
5.5
Tests to be conducted on the SMDB before despatch and the Drawings to be furnished shall be the same as specified for Main Distribution Boards.
6.0
MCB DISTRIBUTION BOARDS
6.1
Description
6.1.1
The specification hereunder shall be applied to al panel boards referenced on the drawings/load schedules as DB's. The distribution board shall be flush / surface mounted split busbar type and shall be provided with standard extension box to allow cable glanding if required. The distribution board shall be surface mounted when installed within the electrical room/service rooms. Distribution boards shall be provided with an isolator incomer with common ELCB’s for group of lighting circuits and common ELCB’s for group of power circuits for each section of MCB’s or RCBO’s for each power circuit as shown on schedules.
6.1.3
As a standard item, all MCB boards shall be provided with permanent circuit identification charts to the approval of the engineer.
6.1.4
MCB’s shall comply with IEC – 898 and RCBO’s shall comply with BSEN 61009. ELCB’s shall comply with BSEN 61008.
6.2
Enclosures
6.2.1
The MCB Distribution Boards shall be surface/flush mounted type. The enclosures within Electrical rooms shall be surface mounting type. The enclosures shall be powder coated rustproof sheet steel units, complete with circuit breakers providing thermal overload and magnetic short-circuit and earth fault protection as shown on the drawings. The enclosure protection shall be IP 31, while the complete assembly shall comply with IEC – 439-1.
6.3
Busbar
6.3.1
The MCBs shall be mounted on either 3 phase or single phase or split busbars as appropriate. All spaces which are not provided with breakers shall be covered with blank plates.
6.3.2
A final sub-circuit neutral assembly and an earthing bar assembly shall be available to facilitate the connection of neutral conductors and protective conductors respectively.
6.4
Breakers
6.4.1
Miniature circuit breakers, RCBO’s and earth leakage circuit breaker and shall be provided as indicated on the load schedules.
6.4.2
The short circuit rating for the MCB’s and RCBO’s shall be 10KA.
6.4.3
All circuit breakers shall be factory calibrated to ambient temperature of 50 deg.C.
7.0
Air Circuit Breakers
7.1
Air Circuit Breakers shall be designed and constructed to have a short circuit breaking capacity of not less than 50 kA and shall comply with the latest editions of IEC 947-2 and Page 8 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
BS 4752. They shall be of the fully withdrawable type and motor operated. ACB On/Off pushbuttons with On/Off indication lamps shall be provided. ACBs shall be 3 or 4 pole type as indicated on drawings. 7.2
Suitable automatic safety shutters shall be provided to cover live parts when the ACB is in the withdrawn position. There shall be 3 distinct positions i.e. "Connected" "Test" "Disconnected-Isolated" There shall also be a "Withdrawn" position.
7.3
ACB's shall have adequately designed Arc chutes and Arc shields for fast and effective Arc chopping. The protective release shall be of the solid state electronic type having protection against overloads, short circuits and ground fault with adjustable time and current settings. The following protections shall be included : (a) Overload protection (LT) (b)
Short-circuit protection (ST)
(c)
Instantaneous short-circuit protection (I)
(d)
Ground fault protection (GF)
7.4
The ACB shall have sufficient auxiliary contacts with a minimum of 2 NO and 2 NC contacts.
8.0
Moulded Case Circuit Breaker
8.1
Moulded case circuit breakers shall conform to the latest editions of BS 4752 and IEC 9472. The short circuit breaking capacities of the MCCB's installed in the main LV switchboards shall be at least 50 kA and 35KA in SMDB’s. The MCCBs used on the project shall be of the plug-in type.
8.2
MCCB's shall be of the heavy-duty quick make break type. All MCCB's shall be ambient temperature compensated to give the ratings indicated in the drawings at 50°C for which a formal certificate confirming that MCCB's have been temperature compensated should be furnished. Each breaker shall have on each phase a thermal over current release and also an instantaneous magnetic trip both of the adjustable type. Four pole breakers shall have a common trip both with a single operating handle and designed so that any overload in one pole automatically causes all poles to open. Breakers shall be trip free and each shall have a trip indication independent of ON or OFF positions. To reset from the tripped position the mechanism shall first pass through the off position. Tripped indication shall be clearly shown by the breaker handle taking a position between ON and OFF.
8.3
The MCCB’s in LV MDB’s and MCC’s as shown on drawings shall be withdrawable type.
9.0
Disconnect Switches
9.1
Disconnect switches and isolator shall comply with IEC-947. Page 9 of 13
AL TADAWI HOSPITAL
9.2
10.0
PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
Disconnect switches shall be provided at each motor controller and appliance location . Isolators shall be rated to connect and disconnect 5 to 7 times the rated current of the item being switched. Isolators shall have a fully visual braking characteristic. Isolator enclosures shall be made of aluminium alloy to IP-65 and shall be provided with padlockable handle interlocked with the door. Isolators exposed to weather shall be housed within self-extinguished polyester loaded fiberglass panels to IP65. Earth Leakage Circuit Breakers(ELCB's)
10.1
Current operated Earth leakage Circuit breakers shall comply with BS EN 61008.
10.2
The ELCB's shall have a residual current operated electromechanical release and shall incorporate a filtering device to eliminate unwanted tripping due to transient voltage. A test button is to prove operation of the ELCB. The ELCB's shall have 100mA sensitivity for lighting circuits and 30mA for power circuits.
11.0
Contactors / Overload Relays/ Control Relays/Timers
11.1
Contactors: Contactors shall be in conformance to IEC 947-4 / CSA 22.2 No.14 and shall be CE approved / CSA Certified. The magnets and contact movements of the contactor shall be horizontal. The contacts shall be double break, butt type and each moving contact shall be individually spring loaded. The fixed and moving contacts shall be of silver -cadmium oxide. The contactor coils shall be continuously rated and shall be wound on moulded formers. Contactors shall be factory calibrated, ambient temperature compensated and sealed. It shall be possible to attach the contactors to 35mm DIN Mounting Rail (EN 50 022). Power contactors shall be provided with a minimum of 2 NO and 2 NC Auxiliary contacts. The contactors shall provide greater performance in less panel space. There shall be flexibility in the selection of front mounting or side mounting of auxiliary contacts .The contactor shall design features for IP 2LX finger protection against accidental contact with live components, positive drive contacts and protection against manual operation, Auxiliary and relay contacts shall be compatible with electronic circuits to 17V, 5mA.
11.2
Overload Relays Overload relays shall confirm to IEC 947-4 /CSA C22.2 No 14 and shall be CSA certified / CE approved. The motor overload protection should have a protection choice of trip class 10 or 20. As a standard, the overload relay shall offer a manually operated trip function, visible trip indicator and isolated N.O. alarm contacts are to be used to protect motor circuits against overloads, phase sequence, phase failure (single phasing) and under voltage conditions. The relay range selected shall be such that the full load current of the equipment falls well within the relay adjustment range. The energy consumption of the relay shall be not above 150mW.
11.3
Control Relays Page 10 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
Control relays shall conform to IEC 255-10-00 and shall be CSA certified. Control relays shall be of plug in type and shall have built in LED’s. They shall have miniature square bases with blade terminals. The contacts shall be of silver cadmium rated for 5A continuos current. The control relays shall be suitable for wiring with spade type crimped lugs. 11.4
Timers Timers shall conform to IEC 255-1 and shall be CSA certified. Timer relays with adjustable range for the Star delta starter shall ensure precise reproducibility of the timing function. The relay shall be equipped with Single pole double throw 1 Pole change over contact two electrically separated time delayed contact one normally open and one normally close.
12.0 12.1
Indication lamps / Push Buttons / Selector switches. Indicating lamps: The Indicating lamps shall be LED type.
12.2
Push Buttons: Push button shall be flush type with colors in accordance with BS4099. Push Buttons contact blocks shall have double break silver plated contacts in NO / NC configuration rated not less than 5A resistive at 240AC, 50Hz. Push Buttons shall feature a diaphragm seal to protect the button from the entrance of oil , water and other contaminants. Oring seals, which rely on lubricants, shall not be used. Start and stop push buttons shall be of shrouded type. Emergency stop push buttons shall be of maintained contact, pull to reset and lockable at EM-stop to prevent reset. Engraved legend plates shall be fitted with all push buttons.
12.3
Selector switches: Selector switches shall be positive action rotary can switches, which shall incorporate double break contacts. Selector contacts shall be double break and of hard silver alloy. They shall have a minimum continues current rating of 10A and be of a high breaking capacity. The switch positions shall be marked on all engraved legend plates, which shall be made from black, white, black traffolyte, and the minimum character size shall be 3 mm. Operating knobs of the rotary type with lever or key operated actuators. Hands -Off -Auto selector switch shall have three positions with center position as off.
13.0
Site condition: Altitude
: Sea level
Relative Humidity
: 100% Page 11 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
Design ambient temperature Surface temperature
Rainfall
: Solar radiation may increase surface Temperature up to 80 deg. C. : 54.4 mm maximum per day.
Atmosphere
14.0
: 50 deg. C
: Salipherous atmosphere often containing fine dust and pollutants in particular CO2 and H2S.
Codes and Standards: IEC 38 IEC 50 IEC 51 IEC 59
Standard voltages International Electro technical Vocabulary. Recommendations for indicating electrical measuring instruments Standard current ratings
BSEN 60947-2 IEC 947-2 IEC 158 IEC 185 IEC 186 IEC 255 IEC 269 IEC 277 IEC 292 IEC 337 IEC 341 IEC 408 IEC 439-1
Air Circuit Breaker/ Moulded Case Circuit Breakers. Low voltage control gear Current Transformer. Voltage Transformer Relays LV fuses with high breaking capacity. Definitions for switchgear and control gear. Low voltage motor starter. Control switches. Push button switches Low voltage air break switches, air break disconnectors, air break switch disconnectors and fuse combination units. Factory built assemblies of low voltage switchgear and controlgear
BS EN 61439-1 IEC 445 IEC 446 IEC 529 IEC 898
Identification of equipment terminals and of termination of certain conductors, including general rules of alphanumeric system. Identification of insulated and bare conductor by colors Classification of degrees of protection provided by enclosures. Miniature Circuit Breaker.
(The equivalent British standards for the above IEC specifications shall also apply)
15.0
VOLT METER AND AMMETER
15.1
Volt meters and ammeter used throughout the project shall be of the digital type and shall be fitted into the front of the panels.
15.2
The meters shall have a dielectric strength of 2KV at 50Hz for 1 minute with 7 segments light emitting diode displays and the figure height shall be 20mm. Page 12 of 13
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PART B - SECTION 4 LOW VOLTAGE DISTRIBUTION
15.3
Meters shall have 4 digits display and shall have an accuracy of 1% or better.
16.0
SWITCHBOARD OPERATOR'S MAT
16.1
All electrical switch cupboards and plantroom switchboard shall be provided with a 1M wide carbon free rubber mat or mats, having a ribbed upper surface and being of such length to suit the full operating extent of each switchboard.
16.2
The insulating mats shall each be certified to have sustained, without failure, a one minute voltage test at 2 KV.
17.0
COORDINATION Complete co-ordination study of the distribution shall be carried out to establish tripping time of breakers at the different levels. Breakers shall be upgraded, if required based on the study, to achieve proper co-ordination without any cost to the Client. The coordination study and short circuit calculations of the complete distribution shall be submitted for the approval of the Engineer.
18.0
ENERGY MONITORING UNIT Digital energy monitoring unit with MODBUS or equivalent communication capabilities shall be provided in each main LV Panel and as shown on drawings and shall be integrated with BMS.
19.0
THERMAL IMAGING Thermal imaging shall be carried out on LV switchgear panel, busbars, bus joints, busbar connection points, tap-off units, etc. before handing over and at the end of maintenance period.
Page 13 of 13
AL TADAWI HOSPITAL
PART B - SECTION 5 VARIABLE FREQUENCY DRIVES
SECTION 5 VARIABLE FREQUENCY DRIVES
Page 1 of 6
AL TADAWI HOSPITAL
PART B - SECTION 5 VARIABLE FREQUENCY DRIVES
SECTION 5 VARIABLE FREQUENCY DRIVES INDEX
1.0
GENERAL
2.0
SPECIFICATIONS
3.0
INSPECTIONS AND FACTORY TEST
Page 2 of 6
AL TADAWI HOSPITAL
1.0
PART B - SECTION 5 VARIABLE FREQUENCY DRIVES
GENERAL This Specification describes the requirements for the 400V Variable Frequency Drive Controllers (VFD). The 400V Variable Frequency Drive Controllers shall be designed and provided in accordance with this Specification and the attached data sheets. The proposed Manufacturers installation requirements should be complied by the Manufacturers as part of the Contract including shielded power cables (if required), enclosure for VFD’s, earthing requirements, etc to achieve EMC Compatible installation. All details shall be furnished as part of the submittal. All equipment shall be designed, manufactured and tested in accordance with the latest edition of the applicable: NFPA 70 IEC 146 EN Standard / CE marked for EMC directives: Emissions
Immunity
EN 50081-1
EN 50082-1
EN 50081-2
EN 50082-2
EN 55011 Class A
IEC 801-1, 2, 3, 4, 5, 6, 8
EN 55011 Class B
EN 50178
EN 60204-1 The manufacturer shall furnish the product as listed and classified by underwriter’s laboratories as suitable for the purpose specified and indicated. The VFD product line shall be capable of operating normally in an environment with an ambient temperature range of 0 °C to 50 °C with a relative humidity of up to 95% (non-condensing). The enclosed current rating shall be derated by 10% for each 5 °C above 50 °C not exceeding 60 °C. The product line shall be capable of being shipped and stored in an environment with an ambient temperature range of 0 °C to 65 °C. The nominal operating altitude shall be less than 1000 m above sea level. Ship controllers in convenient sections crated and protected, bearing in mind the hazards of transportation. All necessary bus connections, wire jumpers, bolts, nuts, etc. shall be suitably packed and identified to facilitate field assembly.
2.0
SPECIFICATIONS
2.1
The variable speed drive controllers’ technical requirements shall be in accordance with the data sheets. Seller shall be responsible for ensuring that under all operating conditions:
Page 3 of 6
AL TADAWI HOSPITAL
PART B - SECTION 5 VARIABLE FREQUENCY DRIVES
-
The controllers and their characteristics shall be compatible with their respective driven production motor and the plant control system. Seller shall obtain speed (frequency) range required and maximum frequency permitted for each type of controller from the load equipment supplier.
-
The VFD shall be suitable for use with high efficiency Design B, 400 V motors.
-
The total harmonic distortion (THD) voltage in the plant electrical and local DEWA systems shall not exceed 5% and no individual harmonic shall exceed 3% during normal plant operation.
-
Computerised harmonic analysis studies to IEEE Standard 519; copies of the studies shall be provided with the proposal.
-
The VFD shall be fully digital pulse width modulated type (PWM) using latest generation IGBT’s with isolating contactors and line reactors.
2.2
The VFD controllers shall be suitable for operation on 400 Volt ±15%, 3 phase, 50 Hz input power supply and 0-400 Volt, 3 phase, 0.5 to 400 Hz output. No transformer shall be used on either the input or output of the VFD.
2.3
Each controller shall comprise: -
-
-
Enclosure with filters and gaskets construction, mounted on steel sills. Incoming supply terminals complete with cable lugs. Padlockable line disconnect switch with bolt on HRC fuses in each phase. 110% overload capacity above motor service factor demand (115%) for 30 minutes. Short circuit and current limit protection. Surge (TVSS) protection. Stop/Start contactor to ensure when the motor is not running, no voltage is present on the motor power terminals. Wireways with removable gland plates. Incoming power system isolation transformer, if required, with thermal sensing in each phase, and filters to limit on the plant 400V bus THD to 5%; no single harmonic to be more than 3%. Drive operation man machine interface (MMI) keyboard. Stepless non reversing minimum and maximum motor speed adjustments, adjustable ramp up rates, minimum/maximum speed limits for pump motors. Adjustments to be password protected. Man/Auto select switch via keypad, with locking via password in both positions (see Note). Local/Remote selector switch via keypad with locking via password in both positions (see Note). “Drive Ready” with remote signal. Stop and start pushbuttons via keypad, in remote mode. Speed control: Local/Remote/Automatic via keypad. Motor speed indication via LED display. Motor On/Off indication via LED display. Emergency stop pushbutton, local at controller and local to plant. Drive status and failure diagnostic feature via LED display. Feature to log, time and date the last 30 fault conditions. Indication of output to drive current on each phase. Page 4 of 6
AL TADAWI HOSPITAL
-
-
-
-
PART B - SECTION 5 VARIABLE FREQUENCY DRIVES
Isolated I/O control signals. Motor multi-function protection, providing short circuit (51), overvoltage (59), undervoltage (27), thermal (49), stalling (49S) and phase unbalance (46) protections, complete with ground fault (51G) protection device to trip the incoming supply. Bolted and shrouded bolted type terminals for terminating load cables. Weidmuller or Wieland type terminal blocks shall be provided to connection of external wiring and cables. Interposing relays as required. 110V AC control voltage or manufacturers standard. Microprocessor based electronic self-diagnostics and fault detection system. Each cubicle shall be provided with a earthing bus, complete with two connectors for connecting to the plant earthing system. Drilled holes shall be provided for connecting cable earth conductor. VFD controllers shall be provided with a lamacoid engraved nameplate, minimum size 150mm x 75mm, engraving details to be provided by Purchaser. The VFD shall have built-in ventilation fan and dust filter. The controller to be remote mounted at front door for manual adjustments and monitoring of parameters. The VFD shall have thermal cut-off provision for the motor over temperature.
In “Man” mode, two modes shall be functional: Local or Remote. In “Local” mode, motor shall be started from Start/Stop pushbuttons via controller’s keypad. In “Remote” mode, motor shall be started from pushbutton station located near motor (if required). 2.4
Performance The VFD shall have the following features as a minimum: -
2.5
Minimum efficiency of 97% at maximum load and speed. Minimum line side displacement power factor of 0.95 to 1.0 logging at all speeds and loads. Adjustable motor frequency of 0 to 400 Hz. Separately adjustable acceleration and deceleration ramps from 0 to 999 seconds. Rotating motor restart feature. Capable of running without a motor connected for set-up and testing. Skip frequency reject point to prevent operating of the equipment at a resonant speed. Ride through for power outage of at least 2 seconds duration Load loss detection Overload protection Auto economizer The flying start feature operable with or without encoder feedback
Discrete Operation Inputs -
Start
-
Stop
Outputs Page 5 of 6
AL TADAWI HOSPITAL
2.6
PART B - SECTION 5 VARIABLE FREQUENCY DRIVES
-
Ready to start
-
Running
-
VFD general fault alarm status
-
VFD Auto and Man/Local/Remote operation status
Analog Operation Inputs -
Speed control signal
Outputs
2.7
-
Speed signal feedback
-
Phase currents (percent)
-
Frequency (percent)
Verification of Interface -
3.0
Vendor shall demonstrate functional testing and operational verification of the control interface with the Building Management System via Modbus, Bacnet, LON, or equal as required.
INSPECTIONS AND FACTORY TEST Controllers shall be inspected at all stage of manufacture in accordance with the Seller’s Quality Assurance Program and shall be completely assembled in the works. Seller shall provide a production schedule, which shall give details of the production processes. Seller shall provide a QA Manual, which shall detail the inspections, testing to referenced standards, and burn in at full load at an ambient of 50 °C, for a minimum of 8 hours. All deficiencies shall be corrected before shipment. All metal surfaces that are to be painted or coated shall be cleaned to an equal of a commercial finish as defined in the Steel Structures Painting Council’s manual SSPC-SP6-63, modified to exclude wet sandblasting and painted to manufacturer’s standard finish. Internal surfaces shall be painted white. Nameplates shall be provided for each VFD controller.
Page 6 of 6
AL TADAWI HOSPITAL
PART B - SECTION 6 MOTOR CONTROL CENTRE
SECTION 6 MOTOR CONTROL CENTRE
Page 1 of 7
AL TADAWI HOSPITAL
PART B - SECTION 6 MOTOR CONTROL CENTRE
SECTION 6 MOTOR CONTROL CENTRE Index
1.0
GENERAL
2.0
SPECIFICATIONS
3.0
INSPECTIONS AND FACTORY TESTS
Page 2 of 7
AL TADAWI HOSPITAL
1
PART B - SECTION 6 MOTOR CONTROL CENTRE
GENERAL GENERAL INTRODUCTION This Specification describes the requirements for 400 V motor control centres (MCC). The motor control centres shall be designed and provided in accordance with this Specification and the electrical schematic diagram. The scope of supply includes the design, manufacture, installation, testing and commisioning of the 400 V motor control centres as described above. Equipment unloading and storage at the Job Site. All equipment shall be designed, manufactured and tested in accordance with the applicable IEC 439-1, EN 61439-1 form-3b, or form as shown as drawings, IEC 947-4, IEC 801 standards and shall meet the requirements of DEWA. Dedicated MCC’s as mentioned on drawings for pumps shall be form-2, type-2 incomer MCCB (N/A) / Isolator.
with
All MCC’s shall be weather proof to IP-54. Subject to compliance with the requirements of the contract documents, acceptable manufacturer of all materials specified in this section of types and sizes required, whose products have been in satisfactory use under similar servicer conditions for not less than five years. The Motor Control Centres shall be capable of operating normally in an environment with an ambient temperature range of 0°C to 50°C with relative humidity of up to 95% (non-condensing). The enclosed current rating shall be derated by 10% for each 5°C above 50°C not exceeding 60°C. The MCC shall be capable of being shipped and stored in an environment with an ambient temperature range of 0°C to 65°C. The normal operating altitude shall be less than 1000 m above sea level. 2
Specifications The MCC technical requirements shall be in accordance with the data sheets, single line diagrams and schematics The motor control centres shall be suitable for operation on 400 V, 3-phase, 3 wire, 50 Hz, front mounted, installed on steel channel sills. All power bus bars as well as all other current carrying parts shall be of copper. The main horizontal bus bars shall be insulated and isolated, and rated as indicated in single line diagrams, and shall run continuously the entire length of the control centre, except when it may be necessary to cut and provide splice plates as between shipping sections. The main bus shall be housed in an isolated compartment. Vertical bus bars extending the full height of each section shall be provided. The vertical bus shall be insulated with flame-retardant material. All Page 3 of 7
AL TADAWI HOSPITAL
PART B - SECTION 6 MOTOR CONTROL CENTRE
buses shall be braced for 50,000 symmetrical amps RMS short circuit current. All bus assemblies shall be supported by steel framework with insulators of moulded glass polyester. Provision shall be made to extend MCC on either side. Motor control centres shall have a continuous horizontal copper earthing bus installed in the bottom of the MCC. It shall extend through each section of the control centre and shall be provided with compression lugs at each end. Vertical ground bus extending down each vertical section shall also be provided. Incoming sections shall have top entry. Space shall be adequate to accommodate incoming bus ducts supplied by others. MCC Supplier shall coordinate with the main contractor regarding details of bus ducts. Outgoing power and control wiring shall be from top. Each control centre shall be provided with a laminated phenolic nameplate, white outer layers with black centre layer, 75 mm x 200 mm, with bevelled edges. Lettering shall be engraved into the phenolic to produce black letters on a white background. The MCC number shall be in 25 mm high letters and numerals. All other lettering shall be a minimum of 10 mm high. Tabreed equipment and purchase number shall be engraved on the nameplate. The nameplates shall be firmly fixed to the MCC’s. Vertical Sections -
Each motor control centre shall consist of one or more rigid free standing vertical section(s) bolted together to form a unit assembly.
-
Sections shall be suitable for mounting starters in front of the section.
-
Vertical sections shall be front connected and be capable of being wired from the front without removing any units. Adequate vertical wiring space accessible from the front shall be provided in a separate vertical isolated wireway, with covers. Openings, covered by removable gasketted plates, shall be provided in ends of vertical sections to allow for future addition of vertical sections at either end. Removable plates shall also be used to cover the top and any unused space on the front and back of the control centres. Where called for in specific requirements, space shall be provided for installation of future units. This space shall be complete with bus, unit supports and isolating barriers.
Unit Compartments Each control unit shall be designed for mounting within a vertical section in such a manner that each unit will be completely enclosed and isolated from all other units. Adequate space shall be provided for entry of wiring from the vertical wiring trough. Control units shall be “plug in” type construction, equipped with selfaligning stabs of a type that will increase contact pressure on short circuits. Control units shall be capable of independently and satisfactorily clearing a fault on the load side of the starter with 42,000 symmetrical amperes available at the line side terminals. Page 4 of 7
AL TADAWI HOSPITAL
PART B - SECTION 6 MOTOR CONTROL CENTRE
Each unit compartment shall be provided with an individual front door. Starters and feeder unit doors shall be interlocked mechanically with the unit disconnect device to prevent unintentional opening of the door with power on and unintentional application of power while the door is open. Means shall be provided for releasing the interlock for intentional application of power, if desired, while the door is open. Padlocking arrangements shall permit locking of the disconnect device in the OFF position with a maximum of 3 padlocks with the door closed or open. Starter disconnect devices shall be operable from outside the enclosure and shall show position of disconnect device whether compartment door is opened or closed. Similar nameplates showing unit location I.D. shall be installed at left top corner of front door of each unit. Special tools and equipment shall be provided for operation and maintenance purposes. STARTERS, DISCONNECT AND ACESSORIES Motor starters shall be in accordance with this specification. The maximum starting currents for motors shall be: -
Less then 10 hp
-
10 hp to 50 hp
-
50 hp and above
–5 times full load current -2 times full load current -1.5 times full load current
The stationary equipment shall be as follows: Motors up to 10 hp will be connected Across-The-Line with over current protection Motors 10 hp and above shall be controlled with motor starters of a soft start design. Provide moulded case circuit breakers (MCCB) for feeders with current limiting protection as indicated on single line diagrams. The rating of the MCCB’s shall be in accordance with the load indicated on the single line diagrams with a minimum of 65kA interrupting capacity. ACROSS-THE-LINE STARTING Controllers shall be of circuit breaker combination type with full voltage magnetic starters for across-the-line starting. Full protection of each phase shall be provided in starters by means of electronic overloads. Undervoltage protection shall be provided by the starter coil to disengage on 65% of rated voltage unless otherwise noted.
Page 5 of 7
AL TADAWI HOSPITAL
PART B - SECTION 6 MOTOR CONTROL CENTRE
ELECTRONIC OVERLOAD RELAY Vendor shall provide an electronic overload relay for connecting the starter. The overload relay shall have a current adjustment range of 5:1 or greater. The overload relay shall have +/- 2.5% setting accuracy. The overload relay can be converted from manual to automatic reset. The overload relay trips in two seconds or less under phase loss conditions when applied to fully loaded motor. The overload relay provides a visible trip indicator. The overload relay provides led status indication. The trip indication LED flashed in a pattern that indicates the trip cause. The overload relay provides 1 N.C. auxiliary contact. The overload relay provides a test trip function that when operated trips both the N.C. contacts and the N.O. triac outputs. The overload relay has trip free construction The overload relay is ambient temperature compensated The overload relay has user selectable 10, 15, 20 or 30 tripping classes The overload relay has user selectable jam/stall protection. The overload relay has user selectable ground fault protection. The overload relay is compatible with a hand-held or panel-mounted interface device that provides a two-line Bakelite LCD and start, stop and reset control functions. The overload relay can communicate on an open communications bus. The overload relay provides the following information on a communication network. -
Average Current
-
Percent Phase Imbalance
-
Percent Thermal Capacity Used
-
Trip Cause
-
Full load Current Setting
-
Output Triac Status Page 6 of 7
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PART B - SECTION 6 MOTOR CONTROL CENTRE
The overload relay provides two triac outputs that enable the overload to control two starter coils. The overload relay provides the following control functions on a communication network. -
Start Stop Reset
Variable Frequency Drives Vendor shall provide variable frequency drives (VFD) for applications that require varying the speed of squirrel cage motors as indicated on single line diagrams. The VFD shall be as detailed in Section 5. Power Correction Capacitors Refer Section 7 for details. 3
INSPECTIONS AND FACTORY TESTS MCC’s shall be inspected at each stage of manufacture in accordance with the Vendor’s quality assurance program and shall be completely assembled in the works. All deficiencies shall be corrected before shipment. Seller shall advise the Consultant 5 (five) working days before completion and before testing commences to Consultant, if required, to make arrangements to witness the inspection(s) and tests. MCC’s shall be tested in the manufacturer’s works in accordance with the referenced standards. Tests to include: -
Routine functional tests. Insulation (Megger) and hi-pot of wiring.
Page 7 of 7
AL TADAWI HOSPITAL
PART B - SECTION 7 POWER FACTOR CORRECTION CAPACITORS, REGULATORS AND HARMONIC FILTERS
SECTION 7 POWER FACTOR CORRECTION CAPACITORS, REGULATORS AND HARMONIC FILTERS
Page 1 of 4
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PART B - SECTION 7 POWER FACTOR CORRECTION CAPACITORS, REGULATORS AND HARMONIC FILTERS
SECTION 7 POWER FACTOR CORRECTION CAPACITORS, REGULATORS AND HARMANIC FILTERS
INDEX
1.0
POWER FACTOR CORRECTION CAPACITORS & REGULATORS
2.0
HARMONIC FILTERS, SURGE ARRESTORS
3.0
HARMONIC ANALYSIS
Page 2 of 4
AL TADAWI HOSPITAL
1.0
PART B - SECTION 7 POWER FACTOR CORRECTION CAPACITORS, REGULATORS AND HARMONIC FILTERS
POWER FACTOR CORRECTION CAPACITORS & REGULATORS These shall be provided as per DEWA requirements. The power factor correction capacitor shall comply with the relevant BS and IEC Standard and shall be double insulated dry type with self – healing metalized polypropylene film dielectric with low losses to IP 545 and shall incorporate a discharge resistance and harmonic filters. An overpressure disconnector switch shall be fitted on each capacitor as an additional safety measure. Capacitors shall have aluminium housing and be detuned to below 3rd harmonics. Capacitance variation due to ambient temperature shall be taken into consideration and the capacitors shall be derated to give the required capacitance at 50 deg. C. Capacitors shall be protected by circuit-breakers and wired through cables with capacity of 1.6 times the capacitor rating. Where multi steps capacitor bank is used the power factor shall be maintained at a set value indicated by the reactive power regulator which shall control the opening and closing of the capacitor switching contactors. Number of capacitors to be connected through the regulator, in the event of Power failure or when the Power is restored, shall be in accordance with the System reactive power. The high inrush current due to capacitor switching shall be taken into consideration by using fast acting contactor designed for capacitor switching and which shall be able to handle 100 times the rated current. In addition to that, the cable connecting the contactor to the busbar shall be installed in a way that self inductance is produced e.g. by coiling the cable into necessary number of loops along the cable run. Capacitor shall be designed and constructed to with stand any harmonic currents if existing and additional filters shall be provided to withstand harmonic currents. The capacitor panel supply shall be by means of isolating switch with door interlocking device. Each bank of capacitors shall be controlled by its own contactor , sized for the capacitive load and a set of three HRC fuses . Choke coils shall be provided which protect the capacitor banks from switch on inrush currents. The electronic regulator, indicator lamps for mains on, banks on, auxiliary circuits on, Auto-Off- manual switches for each bank shall be mounted on the front of the panel. Capacitors shall meet the requirements of EN 60831-1/2 and its reliability shall be recognized by the mark UL810. Capacitors shall generally be of cylindrical aluminium case equipped with M12 bottom fixing stud. Capacitors shall be fixed with overpressure disconnector and discharge resistor. Temperature category: -25/+50 deg. celcius. PCB dielectrics shall not be used. An Electronic regulator shall be provided to control the switching on and off of the banks of capacitors. It shall work with a current signal 0.5 and 5Amps and return to zero for absence in voltage. It should be equipped with display facilities for Volts, amp on the CT secondary and power factor. Capacitors shall shut off incase of generator operation.
Page 3 of 4
AL TADAWI HOSPITAL
2.0
PART B - SECTION 7 POWER FACTOR CORRECTION CAPACITORS, REGULATORS AND HARMONIC FILTERS
HARMONIC FILTERS AND SURGE ARRESTORS Surge Arrestors shall be provided for each Main LV MDB panels. The harmonic levels as specified for harmonics generating equipment like VFD’s, UPS etc. shall be complied with. Total harmonic level in the system shall not exceed 5% of the system voltage. Harmonic in the system shall be analysed by Contractor after energizing and switching on the loads. If active filters are required, Contractor shall submit three proposals within prices which shall be considered as an additional cost under PC sum. Harmonic study shall be included as part of the contract.
3.0
HARMONIC ANALYSIS An harmonic analysis shall be performed based on an approximation method for evaluating total harmonic distortion (THD) voltage at the point of common coupling (PCC), defined to be on the secondary side of the utility supply transformer. The analysis shall take into account other devices connect on the same mains network. In installation where harmonic current may affect sensitive equipment, the AC Drive manufactured shall provide an automatic adaptable harmonics compensator to cope with permanent modification of harmonic contents.
Page 4 of 4
AL TADAWI HOSPITAL
PART B -SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT
SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT SYSTEM
Page 1 of 7
AL TADAWI HOSPITAL
PART B -SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT
SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT SYSTEM
INDEX
1.0
CONDUITS AND ACCESSORIES
2.0
FLEXIBLE CONDUITS
3.0
CONDUIT INSTALLATION
4.0
GENERAL WIRING TRUNKING
5.0
CABLE TRAYS/CABLE LADDERS
6.0
DADO TRUNKING / SKIRTING TRUNKING
7.0
SERVICE OUTLET BOXES
8.0
WIRE BASKETS
Page 2 of 7
AL TADAWI HOSPITAL
1.0
PART B -SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT
CONDUITS AND ACCESSORIES All conduits embedded in concrete, plaster and screed unless otherwise specified shall be extra heavy wall black PVC and shall conform to BS 4607. All exposed conduits shall be heavy gauge, welded, screwed and galvanized steel in accordance with BS 4508. PVC Conduits shall be black of the extra heavy wall with 1.8mm minimum thickness for 20mm dia conduit. Steel conduits shall be of the heavy gauge galvanized steel, welded and screwed type zinc coated, hot dipped galvanized both inside and outside. All set, fixing and wood screws used throughout the installation shall be brass. Accessories mounting box shall be provided with brass earth terminal and shall be supplied with adjustable steel grids. Conduit boxes for steel conduit systems shall be malleable iron with screwed spout outlets, blind cover fixing holes, galvanized and water proof with external lugs where required. Each steel conduit thread shall be given a coat of aluminium paint upon completion of conduit installation. All circular PVC boxes where used to support lighting fittings shall be provided with steel insert clips. The sizes of the conduits for all wiring shall be in accordance to IEE regulations and DEWA Standards and shall be such that a cable can be withdrawn and another drawn in without disturbing the remainder. However, the size of the conduit shall not be less than 20mm where used for lighting and power circuits and 25mm for telephone / data wiring.
2.0
FLEXIBLE GI CONDUITS
3.0
PVC sheathed and watertight Flexible metal conduits, shall be provided between the conduit system and electrical motors or other apparatus subject to vibration. They shall be complete with brass double female adaptors and will be soldered to either end of all flexible conduits and connected to solid conduit entries using smooth bore male brass bushes. Earth continuity through flexible conduits shall be provided by a separate earth continuity conductor, sized in accordance with BS Standards. The brass adaptor specified above shall be drilled so that the earth wire can be brought out at each end. The earth wire shall be soldered at each end to the brass adaptors or alternatively connected to a substantial earth terminal. CONDUIT INSTALLATION All joints in PVC conduits, other than screwed joints, shall be cemented with a waterproof adhesive. This adhesive shall be as recommended by the conduit manufacturer. Screwed connections between steel conduits and accessories shall be screwed up tight, where coupled by a socket the conduit ends shall butt together; running joints shall be provided with back nuts which shall be screwed up tight. PVC conduits shall be saddled at a minimum of 1 metre intervals. All saddles, tubes and boxes must be in perfect alignment to avoid any appearance of warping when the Page 3 of 7
AL TADAWI HOSPITAL
PART B -SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT
installation is complete. Saddles should not be so tight as to prevent expansion of the conduit. Steel conduits run on the surface shall be secured with galvanized saddles spaced not more than 2 metres apart. All saddles for steel conduits shall be of the distance type. Spacer bar type saddles will NOT be permitted. All ceiling boxes concealed in ceiling slabs or voids above false ceilings shall finish flush with the underside of the ceiling and all necessary extension or break joint rings shall be provided and fitted. Steel conduits which finish at boxes or other equipment without smooth bore spouts shall be fitted with smooth bore bushes, the inside diameter of which shall be equal to the bore of the conduit. The junction shall be made by means of a male to female threaded socket bearing on the outside of the box and into which shall be screwed from the inside of the box a hexagon smooth bore male bush. Plain or inspection elbows, or tees, will not be permitted and the number and position of boxes and sizes of conduits shall be arranged to permit the cable being drawn-in easily after all conduits have been erected. Stock bends below 38 mm diameter will not be allowed; all such bends shall be formed out of the conduit at Site to suit the local conditions. Sets and bends shall be made without indentation and the bore shall remain full and free throughout. Conduits shall not be run closer than 0.15m to any steam or hot water pipes and shall be run underneath such pipes rather than over them. The conduits shall not be run closer than 0.05m to any telephone, bell or other signalling circuit. No wiring or drawn-in wires, cables or wires of any description are to be drawn into the conduits until the section of the conduit system involved is complete. A separate conduit and wiring system is to be provided for each installation i.e. lighting general purpose sockets, power, telephone, etc. Drawn-in boxes must be provided to give access to all conduit for the drawing-in or out of any cable after the installation is completed and should not be spaced more than 9m on straight runs. On runs with not more than two right angle bends the spacing between draw-in boxes shall not exceed 7m. Not more than two right angle bends shall be installed between boxes. Conduits shall not be laid to falls, but the Contractor shall exercise care to ensure that no pockets are formed within the conduit system in which water can collect. Drainage holes shall not be provided. In floors which are in direct contact with the earth or under which unheated foundation voids are situated, conduits shall not be laid to form traps in which moisture can collect. Where it is impossible to arrange for drainage to a lower level such floors shall be avoided altogether and the conduit shall be run in the floor above with drops to socket outlets and other low level points. Embedded conduits shall be fixed in position by crumpets or such other means of fixing as shall be necessary to ensure that they remain rigidly in structure or finishes. Page 4 of 7
AL TADAWI HOSPITAL
PART B -SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT
Where steel conduits enter sheet steel wiring trunking, iron clad gear or junction or similar boxes, the junction shall be made by means of a flanged coupling with lead washer bearing on the outside of the box and into which shall be screwed from the inside of the box a hexagon smooth bore brass male bush of heavy pattern. Where PVC conduits connects to any sheet steel wiring trunking, steel clad switchgear and the like, these shall be connected to the PVC conduit system with female thread to plain push-in adaptors with a male bush or with male thread to plain push-in adaptors with locking ring as may be required. Steel conduits which do not finish at boxes with smooth radiused inside spouts shall be fitted with smooth bore bushes, the inside diameter of which shall be equal to the bore of the conduit. Where conduits cross a building expansion joint due allowance shall be made in the design of the run with an approved expansion joint. All screwed joints for conduits and fittings erected in the open air, damp situations and plant room shall be made water-tight by the application of a suitable metallic paint and conduit boxes being fitted with rubber gasket. Separate earth continuity conductors will be installed within the normal circuit wiring. The conduit system shall be such that 'cross-overs' are reduced to a minimum and runs shall be located to avoid holes in the floor slabs required for other services. Particular care shall be taken to ensure that no grout or other foreign materials enters the conduit system through joints, or through surface openings. Screw holes in boxes must be kept entirely free and clean. After screeding, compressed air is to be blown through the conduit system to ensure that it is clean and a steel draw wire of adequate size to be pulled through to ascertain that no obstruction is adhering to the inside of the conduits. Draw wires shall be left in all conduit runs for other services not included in the contract. 4.0
GENERAL WIRING TRUNKING Cable trunking, ducting and fittings should comply with BS 4678 Standards. All cable trunking accessories such as bends, tees, cable retainer, cable separators, reducer and support shall be supplied from the manufacturers standard product range. Site fabricated accessories shall not be acceptable. Cable trunking shall be of sheet steel fabrication, galvanized to with heavy protection both inside and outside. The access plate of the trunking shall be removable in easily-handled sections over the entire length of straight runs. Overlapping collar sections or other similar approved linking arrangement shall be provided at the junction of the various sections of the trunking. All fixings shall be so arranged that there are no projecting screw threads or similar points within the trunking which may cause damage to the cables. The section of the trunking shall not be so changed at deviations from the straight as to decrease the cross- sectional area. Positive continuity links shall be supplied and fixed at all trunking section interconnection points. Page 5 of 7
AL TADAWI HOSPITAL
PART B -SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT
Cable trunking shall not be installed to expose to other mechanical stress except the loads associated in carrying cables. Spacing of supports for cable trunking shall be as recommended by the standards, supports shall be positioned within 300 mm of each bend or fittings. A calculation for the space factor shall be forwarded for approval and the trunking shall be sized accordingly. 5.0
CABLE TRAYS/CABLE LADDERS Cable tray and cable ladder shall be produced to BS 729 and shall be hot dip galvanized. Prefabricated mild steel cable trays shall be constructed of steel and finished hot dipped galvanized. All trays supporting power cables shall be folded edge heavy duty tray with return flange and those supporting fire alarm and telephone cables shall be medium duty. Sheet steel thickness for cable trays shall be as indicated hereunder for the different sizes and types: -
Heavy Duty
:
100mm to 300mm 1.5mm 450mm to 600mm 2.0mm Cable trays, bends and junctions shall be provided as necessary and shall be similar type and finish. The trays shall be of adequate widths to support the necessary cables. They shall be adequately supported throughout the length or run at intervals not exceeding 1200 mm. All cables shall be fixed to the cable tray utilising cable ties. Ventilated covers shall be provided for all cable trays exposed to direct sunlight. Cable ladder shall be produced of 2mm hot dipped galvanized mild steel. Only 40% of the cable tray and the cable ladder space shall be occupied. Cable tray size calculations shall be forwarded for approval and the tray size shall be increased, if required, to meet the above without any extra cost. 6.0
SKIRTING / DADO TRUNKING The trunking shall be provided as per the requirements of BS 4678 partly and BS 4662. The uPVC trunking shall be either installed skirting level or DADO level as shown on drawings. The system shall comply with all relevant requirements of 16th edition of wiring regulations and structured cabling Standards. All corridors, extension corridors, covers, and cable dividers shall be extruded. Corners, corner covers, stop ends cover seals and accessory boxes must be formed by injection moulding. It is the responsibility of the contractor to provide a proper arrangement and installation of the system to engineers requirements and all necessary interconnecting junction boxes, risers, joints etc to be provided. The trunking cover shall be uPVC to incorporate all outlets. Sizes of Trunking shall be as shown on drawings with two / three compartments, for power and voice / data. Sockets shall be from the same manufacturer of trunking flush with the cover. Voice data outlets shall be supplied under structured cabling contract. Back box and face plate shall be provided by the skirting system vendor. Page 6 of 7
AL TADAWI HOSPITAL
PART B -SECTION 8 CONDUITS/TRUNKING/CABLE TRAYS LADDER, FITTINGS AND CABLE MANAGEMENT
Backboxes shall be provided as required for conduit drops. Refer detailed specifications in Medical Services Installation (Part A – Section 10) for service panels / bed head units. 7.0
SERVICE OUTLET BOX Service outlet boxes shall be two-compartment type of the size 300x 300 x75-90mm and shall be constructed from high-pressure Zinc Alloy die casting base frame pillars. This shall be fixed on to heavy gauge galvanized steel base plate for support by support frame. Other materials adequate in strength and performance shall be used and these shall be protected against corrosion. The boxes shall be constructed with provisions for ducting or conduit access on all four sides. Unwanted entries shall be blanked off with detachable side blanks. Covers for service outlet boxes shall be made of high pressure Zinc Alloy die casting with 12mm recess to receive ceramic tiles or carpet tiles. They shall be lifted by suction cups as and when required giving access at all times to the power, telephone and ELV outlets. Counter sunk screws shall secure the covers of service boxes. All exposed portions of the boxes shall be epoxy coated in grey color. All boxes shall have extra wide gaskets in order to minimize water seepage. Gaskets shall be made of material that is durable in order to withstand loads. All boxes shall be adjustable in height thickness.
to take account of difference in floor
Cables emerging from service boxes shall be protected against damage by means of nylon cable exit grommets or equivalent and approved material and shall be reversible to close position when not in use. Circuit protective conductors shall be provided between the covers and the boxes. The boxes shall be adequate in strength to take in a ceramic tile, and withstand loads normally seen in airports and pubic locations. 8.0
STEEL WIRE BASKETS Baskets shall be constructed from 5mm steel wires. The spacing between longitudinal wires shall be 50mm and between transverse wires 100mm. The steel wires shall be welded at all joints. Transverse wires shall be “T“ welded to top edge longitudinal wires in such a way so as to minimise fraying of the cables when being laid. The steel wire baskets shall be Electro-Zinc galvanized and corrosion resistant. Wire baskets shall be minimum 50mm high and, 150mm / 200mm / 300mm / 400mm / wide as may be specified elsewhere or as shown in layout drawings. INSTALLATION Steel wire baskets shall be installed as shown in layout drawings as per manufacturer’s instructions. Installation shall be carried out only after obtaining approval of representative samples of baskets & accessories from the Engineer. Purpose made accessories such as couplers, brackets & supports, fittings, dividers & covers as may be specified else where, only shall be used for the installation of wire baskets. All accessories shall be so constructed so as to permit easy and quick assembly and installation. Equipotential earth bonding shall be carried out as per manufacturer‘s recommendations. Page 7 of 7
AL TADAWI HOSPITAL
PART B - SECTION 9 SYSTEM OF WIRING
SECTION 9 SYSTEM OF WIRING
Page 1 of 8
AL TADAWI HOSPITAL
PART B - SECTION 9 SYSTEM OF WIRING
SECTION 9 SYSTEM OF WIRING
INDEX
1.0
GENERAL
2.0
TEMPORARY WIRING
3.0
CABLE
4.0
CABLE INSTALLATION
5.0
FLEXIBLE FIRE RESISTANT CABLES
Page 2 of 8
AL TADAWI HOSPITAL
1.0
PART B - SECTION 9 SYSTEM OF WIRING
GENERAL Unless otherwise specified all wires and cables enclosed in conduits or trunking or the like, shall be single core LSF insulated 450/750/V grade and the installation shall be carried out on the looping-in system with continuous mains throughout each circuit. All connections to fittings and the like shall be of a solid nature and small connectors (other than porcelain enclosed heavy brass sleeves) will not be allowed. Porcelain connectors enclosing heavy brass sleeves shall be provided for heat resisting trails for enclosed fittings and for the drops for pendant type fittings. All connections to flexible cords or cables shall be such that any strain on the cord or cable is not transmitted to the connections. All wires/cables connections to switches, socket, circuit breaker etc. shall be carried out using suitable swivel lugs or cable ends. Joints in the PVC wiring cables will not be allowed in any part of the system The number of cables run in conduits shall be in accordance with the IEC – wiring regulations and DEWA Regulations. With the exception of 3 phase power points or sub main supply circuits to 3 phase boards the circuits grouped in any one conduit shall be connected to one phase of the system only. This does not apply to wiring run in metal trunking. All switch wires for lighting circuits shall be on the 'live' side. When drawing the wires and cables into the conduits or trunking, the Contractor must see that proper appliances are used so that the wires and cables suffer no damage whatever in the process. All kinks must be rigidly avoided and care must be taken to ensure that the insulation, taping and brading of the cables receive no damage or abrasion. During the progress of work or at completion, the engineer may require certain wires and cables to be drawn out in order to test that the conditions mentioned have been complied with. They may require that certain fittings and/or accessories be dismantled for examination of workmanship and quality. The final subcircuit connection and wiring shall be carried out in accordance with DEWA regulations and unless otherwise indicated, the following details shall apply throughout the works :a)
Lighting Circuits up to 1000 Watts: 10 amp MCB protection Wired with 3 x 4.0mm2 LSF / SC cables.
b)
Lighting Circuits 1200 to 1800 watts: 15 amp MCB protection Wired with 3 x 4.0mm2 LSF / SC cables. c)
13 amp socket outlets:
20 amp MCB protection on radial main basis wired with 3x4 mm2 LSF / SC cable shall be provided for upto four socket outlets serving one room only of less than 50 Sq. meters floor area. Page 3 of 8
AL TADAWI HOSPITAL
PART B - SECTION 9 SYSTEM OF WIRING
32 amp MCB protection on ring main basis wired with 4 x 4mm2 and 2 x 4mm2 LSF / SC cables shall be provided for maximum 8 nos. 13 A sockets. d)
Fixed Medical Equipment. 20 amp MCB protection Wired with 2 x 4mm2 and 1 x 4mm2 LSF / SC cables.
e)
Fan coil units each / VAV Units. 20 amp MCB protection wired with 2 x 4mm2 and 1 x 4mm2 LSF / SC cables.
The above details for connections shall apply throughout the Works, except where the related Regulations would be contravened in respect of permissible voltage drop. In such cases the contractor shall utilize a larger conductor size as appropriate. 2.0
TEMPORARY WIRING No part of the new installations shall be connected temporarily to the Supply Authority's mains without the approval of the Engineer and the Authority. All temporary lighting and electric wiring which the Contractor may require, must be provided by the Contractor who will be responsible for all charges for electricity consumed as stated in the Contract conditions. Temporary wiring and connections executed by the contractor to the instructions of the Engineer shall be arranged in accordance with the IEE regulations. Where the ambient air temperature is in excess of 50 deg.C. heat resisting silicon rubber cables shall be used for temporary connection. Where such cables may be subject to mechanical damage they shall be protected by conduit.
3.0
CABLE All cables supplied and installed shall be selected shall be LSF / Fire proof types with stranded copper conductors and shall comply with the appropriate British Standard referred to below as applicable. (i)
LSF insulated wiring cables non-armoured 450/750V grade
BS. 6491.
LSF insulated steel wire armoured LSF sheathed cables 600/1000V grade
BS. 6346.
XLPE insulated steel wire armoured LSF sheathed multi-core cables 600/ 1000 V grade.
BS. 5467.
(iv)
LS ZH cables
BS. 6724.
(v)
Fire resistant cables
BS. 4066 Part-1 IEC–332 & BS 6387 Category CWZ
(ii)
(iii)
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AL TADAWI HOSPITAL
(vi)
PART B - SECTION 9 SYSTEM OF WIRING
Flexible cables a)
b)
single core LSF insulated non sheathed cables. cables for wiring of luminaires
BS. 6004. BS. 4533.
(vii)
MICC Cables
BS 5750
(viii)
Control cables XLPE and LSF insulated 600 / 1000V BS 5467 BS 6346
Cable specification and manufacture must be consistent throughout each wired system. All cable utilised must be continuously run from source to termination, without any through jointing included. Cable must be adequately stored and protected from damage pending installation and also during installation until permanent protection is effected. Cable reels must be supported on purpose formed support frames and under no circumstance shall cable be drawn from reels laid on the ground. This shall be strictly enforced as the Engineer's condemnation of any cable that is considered to have been abused will involve total replacement at cost to the Contractor. The cross sectional area of every cable shall be suitable for carrying the maximum sustained load current under normal conditions and shall be selected in accordance with related Regulations. The cross sectional area of the neutral conductor for 3-phase circuits shall be equal to the cross sectional area of the phase conductors. The cables shall be selected such that the drop in voltage from the origin of the installation to any point in the installation does not exceed 4% of the nominal voltage when the conductors are carrying the full load current, but disregarding starting conditions. Voltage drop calculation shall be submitted for approval and the cross sectional area of the cable shall be increased accordingly if required to meet the above mentioned requirement without any extra cost. The cables connected in parallel shall be of the same type, cross sectional area, length and disposition and be arranged so as to carry substantially equal load currents. Where cables are to be connected to bus bars, breakers etc. The insulation and/or sheath shall be removed for a distance of 150mm from the connection and replaced by suitable heat-resisting insulation. The wire armour of single core cables in the same circuit shall be bounded together at both ends. 4.0
CABLE INSTALLATION The installation of cables shall conform to IEC regulations and DEWA requirements. All cables shall be protected against any risk of mechanical damage to which they may be liable in normal conditions, of service. Where cables are installed under floors or in ceiling voids, they shall be run so that they are not liable to be damaged by contact with the floor or the ceiling or their fixings. Where the cables passes through holes in metal work, care shall be taken to prevent abrasion of the cables on any sharp edges.
Page 5 of 8
AL TADAWI HOSPITAL
PART B - SECTION 9 SYSTEM OF WIRING
All cables rising through floors and trench covers shall be protected, for example, by a length of lead or steel or PVC pipe which should project at least 75mm above the finished surface level. The open end of the pipe shall be sealed with a suitable compound. Lead and PVC pipes shall be used where they will be free from mechanical damage or in situations where steel pipe would be subject to corrosion. The cables installed throughout the system shall be enclosed in conduit, duct, ducting or trunking as specified. All cables buried in the ground shall incorporate an armour and all cables installed in positions which may be exposed to direct sunlight shall be supported by heavy duty cable tray and shall be suitably covered by a standard ventilated stand and non perforated cover to protect from ultra-violet light. Cable ties shall be utilised to fix cables into cable trays, cable separator and cable retainer shall be utilized to fix cables into cable trunking. All conduits, ducting and trunking shall be properly supported and of a type suitable for any type of mechanical damage to which they may be liable in normal conditions of service or adequately protected against such damage. The internal radius of every bend of a non-flexible cable shall be as recommended by manufacturer and the related standards. Cables under roads, and where deemed necessary under pipe tracks etc., shall be protected by concrete encased PVC ducts. Bitumen bonded fibre ducts shall not be used under any circumstances. Conduit buried in trenches or in the ground is not permitted. Where existing cable sleeves are to be utilised, the contractor shall ensure that the lower most ducts are employed, thereby leaving any remaining ducts accessible for future use. Cable ducts shall be sealed at both ends using materials that are not soluble in hydrocarbons, and that are resistant to any likely corrosive and insect attack in the area concerned. Fire Barriers Where conduit, ducting and/or trunking pass through fire-resistant structural elements such as walls and floors designated as fire barriers, the openings made shall be sealed according to the appropriate degree of fire resistance. In addition to this external fire barrier, an internal fire-resistant barrier shall also be provided to prevent the spread of fires. Cables Installed Underground Direct buried cables shall be bedded in 75mm of clean sand or riddled soil, covered with similar material, then protected by concrete slabbing or interlocking tiles. The trench shall be backfilled over a plastic identification tape laid for as detailed under cable and cable trench marking. Prefabricated concrete troughs or preformed trenches in which cables are laid shall be filled with clean sand to provide the top layer of cables with a minimum of 75mm cover, or be completely filled with sand if this should be required by circumstances. Prefabricated cable troughs, partly or wholly filled with sand shall be closed using prefabricated concrete covers. Such covers shall be provided, by the contractor, to meet Page 6 of 8
AL TADAWI HOSPITAL
PART B - SECTION 9 SYSTEM OF WIRING
any particular load bearing requirements but shall not be less than adequate for use as a footpath. Preformed trenches shall be sand filled and closed by floating over with concrete of adequate strength and thickness. The use of chequer plating and other materials for closing cable troughs, trenches etc., shall be confined to those conditions where such special treatment is fully justified technically and economically and shall be agreed by the Engineer. Power cables operating at voltages of 415 volts and above shall not be routed below 'jacked-up' typed unfixed flooring systems in any internal area unless unavoidable for the purpose of supplying equipment installed on the flooring system. In such cases the power cables must be totally enclosed within a steel trunking, conduit, etc., over their entire route length below the flooring system irrespective of the type of cable used. Cable trench and prefabricated trough depths should not normally have less than 500mm. Direct buried cables should not normally have less than 500mm of cover from cable to finished grade level. The above shall be varied according to the requirements of actual site conditions and cable routes to provide adequate safeguard against, for example, erosion, soft ground conditions and mechanical damage etc. The maximum thickness of any one group of cables shall not exceed 75mm unless otherwise agreed with the Engineer. Cable Sheath of External Buried Cables All cables directly buried in external areas should have MDPE (medium density polyethylene) outer sheath other characteristics of external cables shall be similar to XLPE insulated cables. Cable in Duct All external cables shall be laid in 150mm dia UPVC underground ducts of 3.2mm wall thickness. Cable and Cable Trench Marking All cables shall be fitted with indestructible identification bands at each end and then over their entire length at 30 metre intervals, at all points where they enter and leave ducts, and at changes in direction, etc. Concrete or slabs covering cable trenches shall be coloured for identification purposes. Similarly where cables run under floors, markers shall be employed to clearly define the extent of the cable way over the entire route. The route of underground electric cables shall be marked by permanent markers posts. They shall be reinforced concrete units fitted with lead inserts bearing cable sizes and references. The marker post shall extent above ground level or shall be flush with the final ground level according to the site and Engineer's requirements. Two or more markers shall be visible from any point on the route and markers shall be placed at any divergence from the straight. The location of all underground power cables shall be clearly identifiable throughout their route length by means of a polyethylene board laid in the ground at 300mm above each Page 7 of 8
AL TADAWI HOSPITAL
PART B - SECTION 9 SYSTEM OF WIRING
cable. The board shall be coloured red and continuously marked, with black indelible lettering of not less than 12mm high, to read the following message in both Arabic and English: "CAUTION BURIED ELECTRIC CABLE 300 mm BELOW" A sample of the polyethylene board shall be submitted to the Engineer for approval prior to any cable laying works being carried out. The cable trench as shown on the drawings between service block and main building cable termination room shall be decided taking into consideration of laying all cables within the trench in 3 or 4 layers on cable ladders with sufficient access space. The crossing of other services through the trench must also be considered while deciding the exact width and depth. Jointing and Terminations All cable conductor shall be fitted with a correctly sized cable socket or thimble and a means of identification. The cable sockets may be of the sweated or crimped compression types. If for the former the solder should have a melting point of not less than 185 deg.C and if for the latter they must be the appropriate tools as specified by the manufacturers of the joint connectors. The cable terminations shall be made following the positive identification of the conductors in accordance with the specified phase rotation sequence. Joints in cable are not allowed and shall not be carried out without the written approval of the Engineer. Low tension cable joints shall incorporate compression type ferrules with polyethylene tape insulation housed in a plastic joint box and sealed with cold pouring resin fitting. 5.0
FLEXIBLE FIRE RESISTANT CABLES Fire resistant cable shall have stranded (if installed in conduits within slab) plain annealed copper conductors to BS 6360 with extruded silicone rubber insulation to BS 6899 and Aluminium/PVC laminate and PVC composite sheath with tinned copper circuit protective conductor. The cable shall be manufactured and tested to BS 7629.1993. The conductors shall be solid if installed externally on any surface, and clipped directly. The cables shall be rated at 300/500V and shall be suitable for operation at sheath temperature of 70 deg. C. The cable shall comply with the flame retardant requirements of BS 4066: Part 1, and the requirements of BS 6387, category CWZ and IEC-332. The cable shall be LSZH type. The Fire resistant cables used for the wiring of Fire Alarm System and Central Emergency Lighting System shall be laid in conduits embedded in slab or wall.
Page 8 of 8
AL TADAWI HOSPITAL
PART B -SECTION 10 LIGHTING
SECTION 10 LIGHTING
Page 1 of 5
AL TADAWI HOSPITAL
PART B -SECTION 10 LIGHTING
SECTION 10 LIGHTING INDEX
1.0
LIGHTING EQUIPMENT, GENERAL REQUIREMENTS
2.0
EXTERNAL LIGHTING
3.0
SCHEDULE OF LIGHT FITTINGS
Page 2 of 5
AL TADAWI HOSPITAL
1.0
PART B -SECTION 10 LIGHTING
LIGHTING EQUIPMENT, GENERAL REQUIREMENTS Complete data sheets from the manufacturer shall be included in the submittal of each luminaire. Lighting equipment and lighting fixtures shall be as called for on plans by designated symbols and type. Said equipment shall embody the highest standards of electrical and mechanical design with maximum efficiency obtainable and all shall be subject to the approval of the Engineer. Furnish and install a full complement of all types of incandescent and discharge lamps required in the fixtures installed throughout the complex. All hangers, cables, supports, channels, frames and brackets of all kinds for safely erecting this equipment in place, shall be furnished from the standard manufacturer's product range and shall be erected in place under this Section. Contractor shall protect all opening edge in gypsum false ceiling by a protection means to engineer’s approval. Each lighting fixture shall have a manufacturer's label affixed to it and shall comply with the requirements of all authorities having jurisdiction. Fixtures shall be wired with approved fixture wire. Each fixture shall be wired to a single point with adequate slack for proper connections. All fixtures shall be protected from damage during the installation and any broken fixtures, globes, sockets, stems, and the like, shall be replaced with new parts, without additional cost of the Employer. The right to select other fixtures of the same quality, without additional cost to the Employer is reserved by the Engineer regarding the shape of the lighting luminaire. All lighting fixture shop drawings, cuts, etc., shall be complied and submitted in bound brochures. All loose pages, sheets, clippings, etc., will not be accepted. Catalogue cuts shall contain sufficient data to evaluate all properties of the fixtures submitted. If requested a sample of proposal fixture shall be submitted. The supply to lighting fittings mounted on or recessed into a false ceiling shall be effected by means of a plug in type ceiling rose plug in type mounted on a conduit box within the false ceiling space with a three core heat resisting flexible cable connection. When fixtures are surface mounted to the ceiling, ceiling rose shall be provided adjacent to the fixture. All prismatic controllers for fluorescent fittings shall be of the injection moulded acrylic type to obviate discoloration. Plastic diffusers will not be accepted. When light fittings are installed in areas with plaster board false ceiling, supply wires shall be directly terminated in the fitting with proper connectors. The wires shall be contained in flexible conduits inside the ceiling void. The flexible conduit shall terminate at both ends with proper adaptors.
Page 3 of 5
AL TADAWI HOSPITAL
2.0
PART B -SECTION 10 LIGHTING
EXTERNAL LIGHTING Furnish and install external lighting fittings of the types specified and in the positions indicated on the drawings. Check all requirements regarding conduit runs and positions and the casting in of conduit. The Contractor shall also be responsible for the installation and wiring of the external lighting installation as shown on the drawing and in accordance with the schedule of light fittings.
3.0
SCHEDULE OF LIGHT FITTINGS Light Illumination The lighting illumination shall be in compliance with Chartered Institute of Building Services Engineering (CIBSE). The lux level shall be as follows: S. No.
Location
Lux
1.
Plant rooms
300
2.
Reception Desk
500
3.
Ward Corridors
200
4.
Nurses station
500
5.
Operating Theatres:
Remarks
i.
Operating table (operation light)
50000 to 100000
ii.
All other areas
500
6.
Conference room
500
7.
Staircase
200
8.
Store, dirty room
200
9.
Pantry
400
10
Consulting room
400
11
Observation
400
12
Laboratory
500
13
Treatment suit
400
14
X Ray
400
15
Examination room
400
General
1000
Local (Local examination luminaire).
400
General.
1000
Local (Local examination luminaire).
16
Maternity
Page 4 of 5
Special Lighting for the operating table.
AL TADAWI HOSPITAL
PART B -SECTION 10 LIGHTING
S. No.
Location
Lux
17
Pharmacy
500
18
Library
500
19
Lift lobby
250
20
Loading bay
150
21
Kitchen/pantry
500
22
Car Parking
50
Remarks
The contractor shall provide detailed lux level calculations for all areas to confirm the performance of the selected light fittings for consultant/client approval. Schedule For light fitting details refer to electrical lighting drawings.
Page 5 of 5
AL TADAWI HOSPITAL
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
SECTION 11 LIGHTING CONTROL SYSTEM
Page 1 of 9
AL TADAWI HOSPITAL
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
SECTION 11 LIGHTING CONTROL SYSTEM -INDEX
1.0
GENERAL
2.0
CONTROL SYSTEM CONCEPT
3.0
CENTRAL CONTROL SOFTWARE
4.0
LIGHTING CONTROL MODULES
5.0
TIMERS
6.0
LIGHT SENSOR
7.0
LIGHTING CONTROL PANELS
8.0
INPUT CONTROL DEVICES
9.0
MOTION SENSOR, FLUSH MOUNTED
Page 2 of 9
AL TADAWI HOSPITAL
1.0
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
General The Programmable Lighting Management System shall be supplied, installed and commissioned in accordance with the European Installation Bus – EiB technology. The system shall also work as a stand-alone unit including timing functions incase of PC failure and shall be programmable locally. Proposed system shall not have any bottle neck or single source of failure. Proposal shall be based on a redundant system. A two-wire bus cable shall link+ all sensors (push buttons, brightness sensors, motion sensors, timers, etc.) and actuators (on/off controllers, dimming controllers, etc.) to each other. The bus cable shall be a twisted pair, screened & shielded with solid conductors and shall be capable of handling information exchange and supplying power to the bus devices. The bus cable shall be laid in the building in the form of a linear, star or tree structure similar to the power mains. The system shall be completely de-centralized and programmable. The programming shall be implemented via a high end PC located in BMS room and having access level passwords. Any device in the system shall be accessed for programming from the PC location without having to manipulate the device locally. Each device in the system shall be addressable via a software programmable physical address. Any device in the system shall communicate with any other device via software programmable group addresses (telegrams). Each individual device will respond to only those group addresses for which they are programmed to do so. There shall be an EEPROM storing the physical address, group addresses & other software parameters for every device, thus making it intelligent. No centralized processors or centralized memory storage devices shall be permitted. It shall be possible to program any of the devices on-line at the working site without affecting any of the system devices or the system operation as well as off-line prior to despatch of the material to site. The entire system shall consist of bus lines each consisting of up to 64 devices. Two consecutive lines shall be connected to each other via line couplers that act as network filters and also provide communication between devices in different lines. In the event of failure of a device in one line, only the control functions controlled by that device shall be affected and the device failure report shall be printed out with the date and time of failure. The power supply module feeding power to the network shall consist of a built in backup power to compensate short voltage interruptions of upto 200 ms. This back-up power shall enable the system to put all actuators in a fail-safe position (either on or off or as it is) in the event of power failure. The diagnostic modules shall scan the system for any faults in the bus wiring, failure of any of the devices and generate reports displaying the physical address of noncommunicating devices. The Lighting Management System shall also be integrated with the Building Management System in automation layer so as to monitor and control the required Page 3 of 9
AL TADAWI HOSPITAL
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
circuits from the BMS workstation and hence to achieve a reliable system. EIB / C-bus interface to be provided for total integration. It is electrical Contractors scope and responsibility to re-arrange circuiting to achieve the functionality of C-bus / EIB system as explained without any claims. The following codes and standards to the extent specified herein, form a part of this specification. When an edition date is not indicated for a Code or Standard the latest edition enforce at the time of proposal submitted shall apply. IEC 60947-4 IEC 60947-5-1, IEC337-1, IEC 60536
Indication lamps, Push buttons, switches
BSEN 60529 BSEN61439
Low voltage switchgear and control gear
BSEN 61008 BSEN 60898
Earth leakage circuit breakers Miniature circuit breakers
BS7671
2.0
Contactors
17TH Edition, IEE wiring regulations
CONTROL SYSTEM CONCEPT The programmable lighting management and control system shall consist of following levels of control. The BMS shall be utilised for time based control and manual override by the BMS operator. The EIB system shall be software interfaced with BMS and transfer all data to BMS. The software shall consist of graphics based overview of the entire building, floors and going up to the individual rooms. It shall have the necessary timer modules to control the circuits in the form of various groups. It shall be possible to pre-program the time channels in advance with special holiday programs, weekly programs, etc. In the event the PC is not operational or is switched off, the standalone mode shall control the lighting circuits as per programmed times. This shall be ensured via controllers programmed with the same timer schedules as that of the central PC software. A second level of standalone operation shall also be possible via local timer modules capable of being programmed with switching times locally without the need to connect a PC. 4-channels timer capable of being programmed with at-least 128 time schedules / timer shall be provided for each network group of 64 devices to ensure this standalone operation. This shall ensure that the system remains operational at all times in the auto mode. All other circuits which are controlled based on occupancy sensors, daylight, local switches, etc. shall at all times be working in the standalone ‘Auto’ mode with monitoring and override control possible from the central PC. Lighting Control Concept Page 4 of 9
AL TADAWI HOSPITAL
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
All lighting shall be controlled such that unnecessary lights shall be switched ‘Off’ based on occupancy and duty hours. Also lights redundant due to sufficient daylight shall be switched ‘Off’ based on light sensor and time schedules. The movement sensors shall have a built-in lux sensor with an adjustable set point so as not to switch ‘On’ circuits even after detecting movement due to sufficient natural light. There shall also be an adjustable ‘Off’ delay on the movement sensor from 1 sec to 16 min so as to ensure that circuits are not switched ‘Off’ immediately. Further, the movement sensor shall incorporate a “manual-auto-off” switch for maintenance and local override purpose. Lighting control in different areas shall be as follows: The scenes or requirements listed below must be programmable as per site requirements. a)
Car Parking Lights connected to emergency circuit shall be ON all the time Switch OFF all lights Switch off 50% of drive way lights. Parking bay On / Off and 50% on/off. Ramp lights shall be kept “ON” during night time and shall be selectable. Stair lights operated through push buttons and switch OFF after defined time.
b)
Corridor, Lift Lobbies Switch 50%, 50% lights based on occupancy. Switch OFF all lights. Switch On lights connected to Central Emergency Lighting System. Movement sensor based operations.
c)
External Switch On / Off external lights in ground and roof floors, façade (elevation) lights, signboards, etc. based on time lighting level (programmable) and season. Switch On / Off external façade lights based on the requirements of façade lighting Consultant. Complete façade lighting shall be controlled through Lighting Control System as per lighting Consultant’s requirements. Number of daylight / twilight sensors must be suitable to achieve the operation and exact location to be decided at site. Contractor to include additional sensors if required while commissioning proper coverage without any variation.
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AL TADAWI HOSPITAL
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
A four channel timer device shall control circuits on a particular network group (line) so as to have local standalone operation. It shall be possible to send signals from a timer channel in one network to circuits in another network if programmed to do so. This is to ensure that all timer channels are available for control of all circuits in the system. Each timer shall be capable of being programmed locally with at-least 128 timer programs for any of the four channels combined together, without the need to connect a PC. Each of the four channels shall have a manual push-button to over-ride the channel to ‘On’ or ‘Off’ irrespective of the time programs. In addition, each channel shall have a ‘Off-Auto-Manual’ switch for local over-ride purpose. The timer shall have a builtin battery back-up to ensure that the timer is always operating even in the event of power failure. This timer device shall be in addition to the PC software time schedules to ensure uninterrupted stand-alone operation of the system at all times. e)
Staircase lighting All staircase lighting shall be controlled by timers and push button switches. Light shall be turned ‘ON’ using the push button switches and shall be turned ‘OFF’ automatically after a pre determined time period which can be set using the timer. Separate timer control shall be provided for each group of lights such as facia lighting, land scape lighting, water feature lighting, Walkway/road lighting, and boundary wall lighting as applicable. Actual time schedule for the various circuits shall be decided during commissioning time and shall be to the approval of consultant.
f)
Offices, Doctors’ Offices, Stores, Staff Lounges, Nurses Rooms, Examination / Treatment Rooms, Multi-Purpose Rooms, sterilization, pharmacy, Outpatient Clinics, Etc: lighting control shall be by timer channels and override switch in the above mentioned areas. lights in individual offices shall be turned on/off using the intelligent switch during working hours, however the system switches shall be overridden by timer schedules during non-working hours and on holidays in which lights shall be turned off. Different application areas shall have separated timer channels
g)
Conference and Meeting Rooms Lighting control shall be by timer channels and intelligent lighting control switch. Lights in individual rooms shall be turned on/off using the intelligent switch during working hours; however the system switches shall be overridden by timer schedules during non-working hours and on holidays. Intelligent dimmer switches for dimming the lighting during presentation
h)
Wards Corridors All lights connected to emergency power supply shall be on all the time. lights connected to the power supply shall be on/off through programmable timer channel, actual time schedule as per client requirements. Dedicated timer Page 6 of 9
AL TADAWI HOSPITAL
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
channel will be provided for wards corridor lighting. Intelligent switches shall be provided at nurse station for the purpose of overriding i)
Entrance at Ground Floor Lighting shall be switched on/off based on available daylight. A light value switch capable of switching up to three lighting groups where each individual channel has a separate switching set point shall be used. The brightness range of the set points shall be adjustable from 2 to 2000 lux or 20 to 20000 lux as agreed with the client at the time of commissioning. A light sensor shall be connected to the switch to detect daylight.
3.0
CENTRAL CONTROLLER SOFTWARE The software shall be same as used for BMS. EIB system shall be fully Software integrated with BMS. The software shall administer 255 access levels for 255 different user accounts to ensure responsibility and accountability in the operation of the system. The software shall provide customized graphics screens giving a full graphics display of the entire building along with floorplans, partition layouts, circuit layouts in the individual rooms, etc. The software shall provide real time monitoring of the entire system and shall display active status of each lighting circuit along with the run time hours and generate maintenance schedules when the circuits have reached their threshold set-points for run hours. It shall be possible for the user to access any individual room for monitoring and controlling the lighting circuits. The various screens shall be freely linked to each other (“hyper-link principle”) or be reached by a navigator (“Quick-finder”). Each circuit shall be graphically customized to contain operational characteristics available in the system or by a link to an external database. This information shall be displayed by passing the mouse cursor over the respective circuits (tip-strip mode). The software shall have the interface to import and administrate graphics files having standard formats such as Bitmap (BMP), Windows Metafile (WMF) and Enhanced Metafile (EMF). Further, it shall be possible to add a huge variety of active elements to these files for visualisation and easy understanding. The software shall enable repeat interrogatory sweeps to be programmed through the nigh or any other times to extinguish lighting which may have been left on locally. The timer library in the software shall be programmable. It shall have the necessary timer modules to control any of the circuits individually or in the form of groups which can be selected and changed as and when desired. It shall be possible to pre-program the time channels in advance with special holiday programs, weekly programs, etc. upto the year 2040.
Page 7 of 9
AL TADAWI HOSPITAL
4.0
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
LIGHTING CONTROL MODULES The lighting control modules shall be DIN rail mounted consisting of four individually programmable integral relays (contactors). Each of these contactors shall be rated 10/20A A/AC3 together with a switch-on current carrying capacity suitable for switching loads with high switch-on peaks. Additional contactors shall not be used to control any of the lighting circuits. The output states of each of the four relays shall be displayed on the front. Each of these relays shall be latch-on type with manual operation (override) possible even without power to the system. In the event of power failure or bus wiring failure or control module failure, each of the four relays shall attain a pre-programmed fail-safe position (‘On’, Off’ or ‘As it is’). The control modules shall be capable of been programmed with different applications to suit site requirements for e.g. staircase lighting function which switches ‘Off’ the relays after a preprogrammed time from the time it has switched ‘On’. The application for which a relay has been programmed shall apply irrespective of the signal from which it is switched. Each of the relays shall be capable of being programmed with its own ‘On’ and ‘Off’ delays which is applicable irrespective of the signal from which the relays are switched. The control modules shall receive its operating power supply from the same bus cable without any other power supply. It should not operate on any 220/240 V AC supply to avoid possible fire hazards. Each of the control module shall have its own individual address and shall be capable of being programmed from the central PC for the purpose of changing parameters without the need to access the module locally.
5.0
TIMERS These devices should provide a 100-channel time function used to control, monitor and schedule any devices on the system. A touch sensitive graphic user interface with customised text should be provided. The device shall feature a scheduler on-board to schedule events on the network. The device shall be used to monitor and control the devices located on the network.
6.0
LIGHT SENSOR Light level sensors: These devices are designed to measure lighting levels and automatically generate messages onto the bus to regulate light levels within defined limits. For indoor applications measuring range should be between 20 – 3000 lux. For out door applications, measuring range should be between 1 lux to full sunlight. Lux level range and set points should be programmable, and the sensor should be able to control any number of circuits connected to the bus. Protection
-
Operating temperature range -
IP 54 acc. DIN 40 050 40°C to + 70°C Page 8 of 9
AL TADAWI HOSPITAL
7.0
PART B -SECTION 11 LIGHTING CONTROL SYSTEM
Connection Lighting sensor
-
Weight
-
Type
-
3 screw terminals connection cross section 0.5 – 1.5 mm2. 0.04 kg Light value switch, 3-channel LW/S 3.1 light sensor LF/A 1.1
LIGHTING CONTROL PLANELS LCPs shall be located near to DBs. There shall be a dedicated Lighting Control Panel (LCP) for every DB feeding lighting circuits in general areas. The LCP shall house the system devices and the related control equipment depending on the no. of circuits being controlled. This is to ensure the power wiring between the DB’s and the control modules inside the LCPs is kept to a minimum. The LCPs shall be surface mounted IP65 polycarbonate enclosures together with built-in DIN-rails for easy installation of the control equipment.
8.0
The wiring of the lighting circuits must be re-arranged without any variations to meet all the specified lighting control requirements. INPUT CONTROL DEVICES Input modules shall comprise the following types; Key input units (programmable switches): These shall be available in a range of styles, colours and finishes. The key inputs shall feature led status indicators and shall be programmable as dimmers, timers, toggle and master switches. Switches shall feature an infrared receive option and shall be programmable as scene controllers.
9.0
No. of gangs shall be indicated on drawings. The briefing rooms, conference rooms shall be provided with 4 scene / 2 scene dimmer modules. Touch pad shall be provided as shown on drawings. MOTION SENSOR, FLUSH MOUNTED Motion device sensor with sensor angle 180 degrees is used to send switch-on commands to actuators via the i-bus EIB. The switch-off behaviour is defined in the actuator. Twin light sensor and after-running time are adjustable; manual operation for ON/AUTOMATIC/OFF must be possible. Installation recessed ceiling mounted, wall mounted or external weather proof mounting to engineers approval. Supplier must provide all mounting accessories required. Sensing
-
Power supply Ambient temperature Operation Storage Coverage Transport Operating and display elements 1 slide switch 1 adjustment potentiometer 1 adjustment potentiometer Protection type
-
Passive infrared motion detector 180° horizontal via EIB – Bus / C Bus
-
5°C to + 45°C 25°C to + 55°C Minimum 18m range 25°C to + 70°C
-
OFF/AUTOMATIC/ON for Twilight sensor : 51000 lux. for after–running time:10s to 17min. IP 20 according to DIN 40 050 Attached to the flush- mounted bus couple
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AL TADAWI HOSPITAL
PART B -SECTION 12 LIGHTNING PROTECTION SYSTEM
SECTION 12 LIGHTNING PROTECTION SYSTEM
Page 1 of 5
AL TADAWI HOSPITAL
PART B -SECTION 12 LIGHTNING PROTECTION SYSTEM
SECTION 12 LIGHTNING PROTECTION SYSTEM
INDEX
1.0
GENERAL
2.0
ELECTRONIC SYSTEM SURGE PROTECTION
Page 2 of 5
AL TADAWI HOSPITAL
1.0
PART B -SECTION 12 LIGHTNING PROTECTION SYSTEM
GENERAL Faraday cage type lightning protection systems shall be installed to cover the complete building as per BS EN 62305. A 25x3mm copper tape air termination network shall be fixed at 1m intervals using DC tape clips to the building roof. Air termination network shall be following class I LPS with 5x5m mesh. Items of roof-mounted plant shall be bonded to the air termination network via same copper tapes. All exposed metalwork on the roof or the structure shall also be securely bonded to the air termination network. A bimetal clamp shall be used to bind different metal. 25 x 3mm copper tape down conductors shall be installed within the structural column and clamped using ‘U’ clamps to structural rebar. Down conductors shall not be positioned more than 10m apart around the perimeter. The connection between tape and cable shall be by welded rod to tape clamp or prewelded if required. The complete installation shall be inspected and certified by the authorized representative of the manufacturer for compliance with standards. The connection between the down conductor and the earth electrode shall be made below ground level in a small purpose-made pit with test link and removable concrete cover to facilitate future testing and maintenance. Each electrode shall consist of 1200x16mm or equal stainless steel rods complete with stud, spike, driving cap and a conductor strip clamp. Sufficient number of rods of suitable length shall be installed to provide an overall resistance to earth not exceeding 10 ohms. All metal work on or around the building must be bonded to the lightning protection network to avoid side flashing. Where it is necessary to form tape to tape joints, they shall be tinned soldered and riveted. Soldering alone will not be accepted. Clamped or bolted joints will only be accepted at test points and for connection of down conductors to earth rods. All materials used throughout the installation except earth rods shall be either copper or copper based components which are corrosion resistant and compatible with the application. The Contractor shall submit fully detailed shop drawing for the air termination network, down conductors, earth termination network and bonding and shall be responsible to provide all the necessary accessories to integrate the system with the architectural finish of the building.
2.0
ELECTRONIC SYSTEM SURGE PROTECTION Electronic system surge protection shall be used for the, Incoming Main Power Supply : A suitable protection should be installed in the main LV MDBs. The ESP shall be connected in parallel with the supply. ESP should be installed within the LV MDB by the panel assembler. Page 3 of 5
AL TADAWI HOSPITAL
PART B -SECTION 12 LIGHTNING PROTECTION SYSTEM
HRC Fuses shall be provided in the connecting leads as required by the Specialist. ESP to have neutral earth warning light, to detect if there is excessive voltage present between neutral and earth. Protection shall be tested in accordance with the requirement of: BS EN 62305 : Protection against lightning. BS2914 :1972 ‘Specification for surge diverters for alternating current power circuits’. IEEE C62.41 – 1991 ‘Recommended practice on surge voltage in low voltage AC Power circuits.’ The protector must not interfere with or restrict the system normal operation. It should not: -
Corrupt the normal mains power supply.
-
Break or shutdown the power supply during operation.
-
Have an excessive earth leakage current.
The protector shall be rated for a peak discharge current of no less than 10 KA (8 / 20 microsecond waveform) between any two conductors (phase to neutral, phase to earth, neutral to earth). The protector shall limit the transient voltage to below equipment susceptibility levels. Unless otherwise stated, the peak transient let-through voltage shall not exceed 600 volts. For protectors with a nominal working voltage of 230 or 240 volts, when tested in accordance with BS 6651 : 1999 Category B – High (6kV 1.2 / 50mircorsecond open circuit voltage, 3kA 8 / 20 microsecond short circuit current). This peak transient let through voltage shall not exceed for all combinations of conductors: -
Phase to neutral
-
Phase to earth.
-
Neutral to earth.
Mains protectors (installed in shunt / parallel) should have continuous indication of its protection status and the presence of power. Status indication should clearly show per phase. -
Full protection present.
-
Reduced protection – replacement required.
-
No protection – failure of protector.
The status indication should warn of protection failure between all combinations of conductors, including neutral to earth. (Otherwise a potentially dangerous short circuit between neutral and earth could go undetected for some time). This should include early warning of excessive neutral to earth voltage. Page 4 of 5
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PART B -SECTION 12 LIGHTNING PROTECTION SYSTEM
The protector shall be supplied with detailed installation instructions. The installer must comply with the installation practice detailed by the protector manufacturer. Protection for Data Communication and Telephone lines Transient overvoltage protectors shall be installed on all data communication / signal / telephone lines entering or leaving the building, in order to protect equipment connected to the line, against transient overvoltages. (Where data lines travel between buildings linking equipment in each building, transient overvoltage protectors should be installed at both ends of the line in order to protect both pieces of equipment). Protectors shall conform to BS EN 62305 Protection against lightning The protector must not impair the systems normal operation. It should not: -
Restrict the system bandwidth or signal frequency.
-
Introduce excessive inline resistance.
-
Cause signal reflections or impendence mismatches (on high frequency systems).
The protector will have a low transient ‘let – through’ voltage for tests conducted in accordance with BS EN 62305 This ‘let – through’ performance will be provided for all combinations of conductors : -
Signal line to signal line.
-
Signal line to screen / earth.
The protector shall be rated for a peak discharge current of 10kA. The protector shall be supplied with detailed installation instructions. The installer must comply with the installation practice detailed by the protector manufacturers. The protector manufacturer should allow for the facility to mount and earth large numbers of protectors through an accessory combined mounting and earthing kit.
Page 5 of 5
AL TADAWI HOSPITAL
PART B - SECTION 13 EARTHING
SECTION 13 EARTHING
Page 1 of 4
AL TADAWI HOSPITAL
PART B - SECTION 13 EARTHING
SECTION 13 EARTHING
INDEX
1.0
MAIN EARTHING SYSTEM
2.0
CLEAN EARTHING SYSTEM
Page 2 of 4
AL TADAWI HOSPITAL
PART B - SECTION 13 EARTHING
1.0
MAIN EARTHING SYSTEM
1.1
The contractor shall adequately allow in his tender for the provision and the installation of a complete earthing system required to meet the following requirements and shall ensure that the entire electrical installation is effectively bonded to earth as per BS 7430 and DEWA Standards.
1.2
The contractor shall ensure that the whole of the electrical installation is both mechanically and electrically continuous throughout and is bonded to a suitable main earth in compliance with the IEE regulations and BS Code of Practice.
1.3
A test connection link shall be provided for testing purposes.
1.4
The nominal cross-sectional area of all earth continuity conductors shall be in accordance with the IEE regulations with the minimum size being 2.5mm2.
1.5
All switchboards shall be provided with copper earth bar continuously run along the switchboard frames. Main earth electrodes via earthing cables shall be connected to in accordance with DEWA, requirements.
1.6
All switchgear, metal conduit and trunking systems, metal frames, enclosures, lighting fittings and cables sheaths shall be bonded together and connected to the earth tapes of the appropriate switchboard. Similarly all earth pins and metallic plates of socket outlets, switches, accessories and enclosures shall be bonded to earth with earth continuity conductors. Each individual earth path shall be electrically continuous throughout its length from the farthest point of the associated part of the system back to the main earth.
1.7
All earthing cables shall be installed in accordance with the relevant requirements called for in the cables section of this specification.
1.8
All bonding leads in the form of cable having a standard conductor shall be terminated in "sweated" sockets and shall be rigidly bolted to earthing terminals.
1.9
All earthing cables shall be insulated with a PVC sheath. Where connection of the earth lead to the main earth is made with a stranded cable, the earth lead shall be double insulated with PVC.
1.10
Mechanical protection shall be provided for all external runs of earth cable as specified.
1.11
Earth cables shall have same construction details as mains cables.
1.12
The main earth pits shall be complete with all accessories. The value for earth resistance shall be 1 ohm or less.
1.13
Equipotential bonding conductors (6mm2 minimum) shall be provided for metal pipes, water pipes, metal doors and other extraneous conductive parts and brought to the main earthing terminal in ground floor electrical room for final connection to the main earth pits.
1.14
The metal doors & door frames in electrical rooms and substations shall be equipotentially bonded to the main earthing network.
1.15
The earth rods shall be stainless steel, corrosion resistant type. Page 3 of 4
AL TADAWI HOSPITAL
PART B - SECTION 13 EARTHING
2.0
CLEAN EARTHING SYSTEM
2.1
Clean earthing system shall be provided for Operation Theatres, ICUs and Resuscitation areas and shall consist 50 x 6mm riser bar connected to a separate earth pit and connection point in each specified area. The UPS and low current panels shall also be connected to the clean earthing system.
Page 4 of 4
AL TADAWI HOSPITAL
PART B - SECTION 14 UPS SYSTEM
SECTION 14 UPS SYSTEM
Page 1 of 19
AL TADAWI HOSPITAL
PART B - SECTION 14 UPS SYSTEM
SECTION 14 UPS SYSTEM INDEX
1.0
GENERAL
2.0
UPS
3.0
AUTOMATIC TRANSFER SWITCH
Page 2 of 19
AL TADAWI HOSPITAL
1.0
PART B - SECTION 14 UPS SYSTEM
GENERAL Supply, installation, testing and commissioning of Un-interruptible power Supply systems of capacities as shown on the related drawings. The system shall operate in conjunction with the building electrical system and the generator to provide high quality power for critical equipment loads such as computer servers and related equipment, power outlets feeding main controllers of BMS, security system, Fire alarm system etc. for a period of 30 minutes until the generator power is available. This will hereafter be referred to as the “UPS”, and shall provide continuous, regulated AC power to the loads under normal and abnormal conditions, including loss of the utility AC power. The UPS shall be completely solid-state except for maintenance bypass switches which may be mechanical. All UPS shall have interface cards to have the following and shall be complete with system software: 1)
Required input and output dry contacts for reporting alarm and status.
2)
RS232 port for serial communication for advanced remote monitoring and control through computer network.
3)
Communication port with appropriate protocol for connection to BMS system.
All UPS systems shall be based on latest IGBT (insulated Gate Bipolar Transistor) technology with PWM (Pulse Width Modulation). Rectifier configuration shall be such that THDI (Total Harmonic Distortion Current) at upstream shall be minimum. The following shall be furnished along with the equipment: Factory testing. Documentation. The UPS shall be recommendations.
installed
in
accordance
with
the
manufacturer's
The equipment proposed must be in conformity with the following directives and standards – Directives - 9/336/EEC (and amendments 91/263 and 92/31), 3/23/EEC, 3/68/EEC. Standards
- Safety N 50091-1-1 N 50091-1-2 - EMC N 50091-2
EN 60127, EN 60269-1 EN 60445, EN 60529, EN 60950, EN 61008-1, EN 61009-1
EN 50081-2, EN 50082-2, EN 55011, EN 55022 Page 3 of 19
AL TADAWI HOSPITAL
PART B - SECTION 14 UPS SYSTEM
EC 62040-2
EN 61000-2-2, EN 61000-3-2, EN 61000-3-3, EN 61000-4-1, EN 61000-4-2, EN 61000-4-4, EN 61000-4-5, EN 61000-4-11, CISPR 16-1.
- Battery
EC 896-2, Eurobat.
- Marking
CE, TUV/GS
- Design Production Logistics & Service
ISO 9001
- Applicable local laws and regulations The UPS system shall be capable of withstanding any combination of the following environment conditions in which it must operate, without mechanical or electrical damage or degradation of operating characteristics: a) Ambient temperature:
0 to 40 degrees C
b) Relative Humidity: Up to 95% (non-condensing) c) Interference:
The UPS equipment shall be provided with EMI/RFI suppression following EN-50091-2.
Audible Noise: Noise generated by the UPS system under any condition of normal operation shall not exceed an allowable sound pressure level of 55-70 dB(A) measured at 1 metre depending on the rating of the UPS. 2.0
UPS Objectives: To supply, install, test and commission the Uninterruptible Power Supply system as per the technical specifications laid down in this document. Ratings : As per schematic Quantity : As per schematic Power factor : 0.9 (output) or higher KVA UPS if PF is 0.8. The Uninterruptible Power Supply system specified herein should comply to each of the following mandatory points keeping in view the very latest in UPS technology to provide the best possible Power protection and most importantly offer Maximum Energy Saving: -
UPS should be based on latest technology for Modulation for higher accuracy and the best overall efficiency of 92% minimum.
-
True On Line Double Conversion and Voltage Frequency Independent (VFI).
-
PS. Input Total Harmonic Distortion of Current THDI 750 Wire diameter 0,4 mm (AWG 26) – 0,57 mm (AWG 23) Insulation diameter 0,8 – 1,6 mm Wire strain relief Through labyrinth in IDC block Cable strain relief Through cable ties For shielded RJ45 Shield contacting Large surface contact springs (on plug) Page 5 of 8
AL TADAWI HOSPITAL
PART B -SECTION 17 VOICE / DATA SYSTEM
Shield contacting Shield lance (on cable) Earthing terminals for flat plugs 4.8 x 0.5 mm Shield material CuSn, tin-plated, 2 – 4 µm Electric and Transmission Data Contact resistance < 50 milli Ohm (conductor – conductor) Contact resistance 1< 20 milli Ohm (shield – shield) Insulation resistance > 500 mega Ohm (500 VDC) Dielectric strength 1000 Veff, 50 Hz/1 min (conductor – conductor) Dielectric strength 11500 Veff, 50 Hz/1 min (conductor – shield) Coupling resistance IEC 96-1 1 MHz < 15 milliohm Frequency Attenuation 10 MHz < 100 milliohm [MHz] [dB] [dB] Limit Typ 0.02 48.39
FEXT [dB] Limit 75.0 71.05 63.1 57.1 53.2 47.2 43.1 41.2 39.3 38.2 37.1 35.1
[dB] Typ >83.7 >73.7 >66.0 >60.2 >56.4 >50.5 >46.3 >44.1 >42.4 >41.6 >40.7 >39.2
RL [dB] Limit 35.0 35.0 35.0 35.0 35.0 28.1 24.0 22.1 20.2 19.1 18.0 16.0
[dB] Typ >45 >45 >43 >38.5 >36 >30 >27 >25 >23 >22 >21.5 >19
RJ45 Hardware Electrical Characterization, Transmission performances: Worst Pair Combination with a Cat.6 Plug
Patch Cords & Line Cords: The patch cords and line cords shall constitute of two modular RJ45 plugs assembled on shielded twisted pair stranded cable. The SSTP stranded cable shall be constructed using flexible cable . The sum length of all patch cords & line cords for one outlet shall not exceed 10Mtr. Under no circumstances shall locally assembled patch cords and line cords will be acceptable, all must be factory made. Connecting Hardware for Voice Backbone Cable: The voice backbone cables shall be terminated on high density 50 port RJ45 patch panels, which shall be housed in the 19" IDT cabinet. These panels shall accept UTP cables having AWG22-26 solid or stranded wire. Highly visible, colour coded strips shall be used to identify individual pair of the backbone cable. These panels shall have features like gas-tight connection, integral strain relief mechanism. Data Backbone Cable: Page 6 of 8
AL TADAWI HOSPITAL
PART B -SECTION 17 VOICE / DATA SYSTEM
The backbone cable for data applications shall comprise of fiber optic cables. The cables shall have minimum 8 or 12 cores of Multimode 50 /125 graded index fiber strands. The fiber optic cables shall have the following characteristics: Wavelength (nm)
Max. Attenuation (dB)
850 1300
1200
If the backbone distance exceeds 550Mtr, single mode fiber cables shall be installed. These cables when installed, shall have the following characteristics: Wavelength (nm)
Max. Attenuation (dB)
1300 1550
0.4 0.2
Bandwidth (GHz x Km) 100 100
The fiber optic cable shall be tight buffered, indoor type, LSOH when used within the building and outdoor type, rodent protected when used to connect between the buildings. The fiber optic cable shall be installed with a bending radius > 15 times the outer diameter of the cable.
Connecting Hardware for Data Backbone Cable: The fiber optic (data backbone) cable shall be field terminated with ST connectors (with ceramic ferrule) on each fiber strand. These connectors shall be installed in fiber optic patch panel, mounted in 19" IDT cabinet. These shall feature sliding drawer type panels for better administration of the fiber cables. The panels shall have holes at the rear for inserting and strain-relieving cables with PG glands. Cable and fiber guides for buffer management within the panels shall be built-in the panel. The insertion loss on each SC connectors shall be < 0.2dB. Fiber Optic Patch Cords: Fiber optic patch cords need to be provided to enable rapid connection and disconnection repeatedly on a non-destructive basis. Fiber optic patch cords shall be supplied with each IDT. The sum total quantity of IDTs shall be supplied at the data MDT (SC-SC). The patch cords shall be Multimode Graded Index duplex 50 /125 with SC connectors on one end and the other end will have connectors to suit the network equipment (SC). Provide for Single mode patch cords, wherever necessary. The patch cords shall have a mating cycle of 1000 and maximum tensile load on the cable of 100N. Under no circumstances shall locally assembled patch cords and line cords will be acceptable, all must be factory made. 4.0
19" IDT/MDT/FO-CD CABINET The cabinet shall provide a controlled environment to house telecommunications equipment, connecting hardware and to terminate the entire horizontal cabling, voice Page 7 of 8
AL TADAWI HOSPITAL
PART B -SECTION 17 VOICE / DATA SYSTEM
backbone cabling and data backbone cabling. These cabinets shall be of high quality and include locking doors. The cabinet shall be either wall mounted (with access from back and front – Swing type frame) or freestanding (with wheels) depending on the size of the cabinet. The wall mount cabinet should have a minimum depth of 500mm and the freestanding cabinet shall have a minimum depth of 800mm. Provide sufficient space in the cabinet for telecommunications/network equipment and future expansion. At IDTs where data backbone is not installed, allow sufficient space in the cabinet for installing data backbone in the future. Wherever data backbone is installed, the IDT cabinet shall be supplied with Fan Tray and UK type powerstrip. These cabinets shall be supplied with sufficient quantities of cable organisers for management/dressing of patch cords. 5.0
6.0
7.0
INSTALLATION 1.
The contractor shall not engage any sub-contractor to carry out the structured cabling work.
2.
The installation shall comply with the requirements of ISO-11801 Class E as appropriate.
3.
The structured cabling system (cables, RJ45 outlets, panels etc) shall be labeled in accordance with EIA/TIA-606.
TESTING 1.
The contractor shall test and demonstrate on site, to the satisfaction of the engineer, that the wiring is in full compliance with specific requirements of a Class E installation (250MHz). All the tests shall be carried out in accordance with TSB-67 standard.
2.
The contractor shall provide test results (both hard copy and soft copy) for every data and every voice outlet.
DOCUMENTATION 1.
8.0
The contractor shall submit a set of documentation comprising of layouts showing cable route & position of all outlets, labeling scheme, layout of cabinets and test results.
WARRANTY 1.
The OEM through the specialist contractor shall provide 15 years component and system performance warranty.
Page 8 of 8
AL TADAWI HOSPITAL
PART B - SECTION 18 CENTRAL BATTERY SYSTEM
SECTION 18 CENTRAL BATTERY SYSTEM
Page 1 of 8
AL TADAWI HOSPITAL
PART B - SECTION 18 CENTRAL BATTERY SYSTEM
SECTION 18
CENTRAL BATTERY SYSTEM
INDEX
1.0
GENERAL
2.0
CENTRAL BATTERY SYSTEM DESCRIPTION
3.0
BATTERIES
4.0
CENTRAL MONITORING DEVICE
5.0
EXIT AND SAFETY LUMINAIRE
6.0
HIGH FREQUENCY ELECTRONIC CONTROLGEAR
7.0
MAIN BATTERY PANEL AND SUBSTATION PANELS
8.0
AUTOMATIC MONITORING AND LOGGING FACILITY
9.0
BMS INTERFACE
10.0
WIRING
Page 2 of 8
AL TADAWI HOSPITAL
1.0
PART B - SECTION 18 CENTRAL BATTERY SYSTEM
GENERAL The emergency lighting system & all its components shall be designed & installed to meet the local civil defense requirements & the respective DIN/VDE 0108 & BS5266 standards applicable to this project. Emergency lighting shall fulfill the following functions, Illuminate the escape routes Indicate the escape route direction clearly Provide the Exit signs on all the Exits Ensure fire alarm call points, fire fighting equipment & other life saving equipment on the premises are properly illuminated. Permit operations concerned with safety measures & to shut down hazardous processes. All products used in the emergency lighting system shall be manufactured by an ISO9001 certified company, complying with the relevant VDE/DIN/BS/EN standards & shall bear the CE certification for Electro-Magnetic compatibility. The number of central battery panels shall be appropriately decided for maximum reliability to ensure continued emergency supply & on large buildings failure of one panel shall not result in total emergency lighting supply failure for the entire building.
2.0
Central Battery System Description
2.1
Mechanical Construction The battery housing shall be sheet steel, powder coated housing IP32 with removable screwed front, rear & top doors to provide complete access to the batteries. The electronics section shall have IP54 sheet steel enclosure with transparent polycarbonate window for all central systems & IP54 sheet steel enclosure with full metal door for all substations. The electronic compartment shall have large cabling compartments with cable entries from top via four or more undrilled removable metal flange plates. All incoming cables & looping circuits shall be connected on protected & fused terminals as per ENVDE0100. All outgoing luminaire circuits shall be connected direct to relevant components via plug-in type terminals 2.5 sq. mm. The electronic components shall have 19” slide in technology for installation and maintenance.
2.2
Electrical Construction The system shall be built up in a modular format with all modules being plug-in-type design. The outgoing circuits shall be fed through changeover modules. One module shall be used for each separate switchable outgoing circuits with maximum load of 6Amps as per DIN/VDE 0108, if circuits are 2 Amps & below, one module with two separately switchable outgoing circuits shall be used . Each circuit shall be protected within the system on mains & battery side via screw-in type cartridge fuses on each module. The fuses shall be accessible via front plate of the module. The mains supply & battery mains cables shall be protected by knife edge fuses. The fuse holders shall have handles for simple removal of the fuses.
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PART B - SECTION 18 CENTRAL BATTERY SYSTEM
Each panel shall have a spare fuse carrier with atleast three spare fuses for each size used in respective panel. 2.3
Control Module The control module shall be fully encapsulated plug-in type, composed of a microprocessor control module with plain text display with multiple line display of operative states & luminaire failures. LED,s shall indicate, -
Mains operation
-
Mains failure
-
Battery operation
-
Summation fault
Potential free indicator contacts for, -
Operation
-
Battery operation
-
Summation fault
Centronic interface for the connection of standard printers shall be provided on the front of the control module A electronically controlled 24V output for the voltage monitoring of lighting sub distribution panels shall be provided. Electronically isolated mains monitoring for maintained & non maintained light circuits with forced changeover in case of mains failure from mains to emergency light operation. As a standard following programming modes shall be available, -
Manual reset
-
Time delay of mains return
-
Stair well light timer adjustable from 1 to 15 minutes
-
Acoustic alarm in case of mains failure, manual reset or summation fault
Individual changeover per emergency circuit with free programming for maintained or non maintained light & two pole fusing confronting to VDE. Failure recognition for each individual safety / Exit luminaire in conjunction with proprietary electronic ballasts including 2 wire monitoring module without additional data line. Page 4 of 8
AL TADAWI HOSPITAL
2.4
PART B - SECTION 18 CENTRAL BATTERY SYSTEM
Changeover Module Each changeover module shall be fully encapsulated plug-in type, freely programmable to suit type of luminaires connected on outgoing circuits i.e. maintained, non maintained or switch maintained. The individual lamp monitoring circuits shall be included in the changeover module. Each changeover module shall have LED indications for Circuit On & Lamp failure & shall be fit to monitor upto 12 luminaires maximum as required by DIN/VDE0108/pr EN50171. All outgoing circuit terminals shall be provided to monitor the sub distribution boards.
2.5
Maintained Light Switch Sensing Module For mains operation common switching of general lighting & safety lighting by means of existing light switches a compact fully encapsulated module shall be provided near each luminaire circuit to be switched with each of these reflecting one lighting switch. These modules shall also serve as a sub circuit monitoring module, whereby end circuits are monitored for any power failure in that area.
2.6
Circuit Monitoring Module Each lighting DB or rack feeding light circuits in all areas shall be provided with voltage monitoring modules for mains failure so that supply voltage can be automatically transferred from normal to battery supply mode. In corridors, lift lobbies and entrances, the respective lighting circuits shall be provided with sub-circuit monitoring modules for detection of the particular circuit and automatically switching-on the emergency lights in that area.
2.7
Charger Charger module shall be fully encapsulated plug-in type, micro processor controlled module with temperature controlled voltage charging to IU characteristics. Automatic boost charging facility shall be built in to the system depending on the required total battery capacity. It shall have charging & supervising method for failure indication of battery circuits as well as battery charger. The charger shall be designed for a 90% recharge of a fully discharged battery set within 20 hours. It shall come complete with earth leakage monitor for battery circuit monitoring. It shall be provided with LED indications for, -
Operation
-
Charger On
-
Booster On
-
Mains Operation
-
Battery capacity > 10%, >50%, 100%
-
Charging Failure
-
Insulation fault
It shall have potential free indicator contacts for, Page 5 of 8
AL TADAWI HOSPITAL
-
Charging failure
-
Fast charge
-
Insulation fault
PART B - SECTION 18 CENTRAL BATTERY SYSTEM
It shall have a push button to simulate earth leakage failures. It shall include plug-in-type terminals as well as the protection fuses for mains & battery accessible via the front plate of the charger 3.0
Batteries Batteries shall be maintenance free, sealed leak proof 220V lead acid gas recombination type battery with following system features,
4.0
-
Life time expectation > 10 years @ 24ºC ambient – temperature as per DIN VDE 0558, Part 508.
-
extremely low gas generation, requiring no special ventilation
-
acid density between 1.24kg/L & 1.26kg / L
-
service life of ten years
-
low self discharge
-
IP 32 battery cabinet with ventilation openings and IP 54 electronic cabinet.
-
maintenance free special connectors with pole covers meeting the rules of prevention of the accidents
-
pole ducts tight to electrolyte & atmospheric oxygen
-
absolutely maintenance free over the whole service life
-
Immobilized electrolyte design
-
permanently sealed pressure release safety vent
-
Operates at extremely low internal pressure
Central Monitoring The Central monitoring shall be through BMS and the BMS PC. It shall have programming / automatic testing facility for time duration test, luminaire display function test, location of luminaire, manual reset & acoustic alarm
5.0
EXIT & Safety luminaire Unless otherwise stated all EXIT luminaires shall be operated via an EMERGENCY CENTRAL BATTERY SYSTEM (ECBS). Page 6 of 8
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PART B - SECTION 18 CENTRAL BATTERY SYSTEM
All Exit luminaires shall have pictogram legends as per DIN 4844/CEN TC 169 or markings as per local civil defence requirements with viewing distance of 36 meters or 16 meters based on the length of the corridor. The luminaire shall be built according to EN 60598. Safety luminaires shall be operated by an EMERGENCY CENTRAL BATTERY SYSTEM. This shall be achieved by using high frequency electronic ballasts operating at full load or by the use of halogen lamp luminaires. These ballast shall be fitted on the part of normal lighting designated as emergency lighting. All Exit and safety luminaires shall have a monitoring component with easy accessible addressing module. All luminaires with high frequency ballasts shall have a built in or separate monitoring facility. Outside of every installed exit and safety luminaire a label (Red/White) with the circuit and luminaire reference number shall be installed. 5.1
Slave Emergency Luminaire (Suitable for connection across central battery system) All luminaries shall meet following requirements : Supply voltage 220V/230V AC/DC The luminaire shall comply the requirements of EN60598 Electronic ballast shall comply the requirements of EN60298/60294 EMC or EMI protection to EN55015 Ambient Temperature - 40ºC.
5.1.1
Type – EL – 1 (Areas without False Ceiling) Luminaire shall be non maintained type slave luminaire with 8 watt fluorescent lamp with addressable low loss electronic ballast which can communicate with central control module. Luminaire housing shall be white plastic. Luminaire shall be wall / ceiling / pendant mounted to suit site conditions. Protection class I, IP 65
5.1.2
Type – EL – 2 (False Ceiling areas)
5.2
1 x 8W fully recessed Emergency luminaire. Housing shall be sheet steel white with electronic ballast and communication module. Slave Exit luminaire (suitable for connection across central battery system)
5.2.1
Type – Exit – 1 (Areas without False Ceiling) Maintained 8w luminaire, wall / ceiling / pendant mounted with addressable low loss electronic ballast which can communicate with the panel. Protection : IP-65 Minimum viewing distance 30 meters The diffuser shall have EXIT Legend with running man and directional arrow on one or both sides as required at the location of installation. Housing shall be white plastic and diffuser.
5.2.2
Type – Exit – 2 (Areas with False Ceiling) Page 7 of 8
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PART B - SECTION 18 CENTRAL BATTERY SYSTEM
Exit light type shall be exclusive edge light with acrylic glass panel. The housing shall be slim aluminium housing with snap on facility panels. It shall have 8W fluorescent lamp and addressable electronic ballast 6.0
High Frequency Electronic Control Gear All safety and exit luminaires shall be built according to EN 60598; electronic ballast to EN 60298/60294 and EN 60924/60925, EMC protection to EN 55015. The electronic ballast with monitoring facility and easy accessible address module shall have an automatic cut-out fuse for failures within the lamp circuit.
7.0
Main Central Battery Panel & Sub Station Panels The substations shall be installed in areas with a maximum room temperature of 30 deg.C. The substations shall be located based on the requirements of the lighting loads and optimising the field wiring. All substations shall be connected to the central station for central group monitoring.
8.0
Automatic & Cyclic Function Monitoring & Logging Facility An automatic monitoring and testing facility shall be installed with permanent cyclic charger and battery monitor at intervals of five minutes or less with daily/weekly function test of the complete load supplied from the battery, charger, wiring, luminaires, registration and logging of tests and results. A manually operated test feature shall also be provided in addition to the automatically operated testing feature.
9.0
BMS Interface The CBS shall be integrated on LON works Protocol to BMS. Refer BMS specification for the details regarding integration. The proposed system shall provide full integration including luminaire status after each test. Display shall be available on BMS workstation. Systems which cannot comply with the above will not be acceptable. The Central Battery system Vendor shall provide LON interface module for data transfer to BMS.
10.0
Wiring Wiring, both power and control, between the central battery, substation panels and luminaires shall be carried out in fire retardant Pirelli FP200 or equivalent cable of suitable size as per the local civil defence requirements. 3 core fire resistant cables with earth wire shall be provided to feed substations from central battery panel. Cable size selection details shall be submitted based on the electrical load of each substation. Emergency lights in each staircase shall be wired in separate circuits to comply with Civil Defence requirements.
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AL TADAWI HOSPITAL
PART B - SECTION 19 NURSE CALL SYSTEM
SECTION 19 NURSE CALL SYSTEM
Page 1 of 10
AL TADAWI HOSPITAL
PART B - SECTION 19 NURSE CALL SYSTEM
SECTION 19
NURSE CALL SYSTEM
INDEX
1.0
GENERAL
2.0
SYSTEM
3.0
EXTERNAL EQUIPMENT INTERFACING
4.0
SAFETY
5.0
MAINTENANCE AND SERVICE
Page 2 of 10
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1.0
PART B - SECTION 19 NURSE CALL SYSTEM
GENERAL Computerized Nurse Call Systems shall be manufactured to fulfill the present valid standards and regulations for light signaling technology (ALT) DIN 41050 (part 1 and 2), HTM 2015 (BS & EN Standards). For the installations of light signaling, the regulations DIN VDE 0834 and the standards that are quoted shall be observed. Furthermore the standards DIN 41050 part 1 and 2 as well as HTM 2015 shall be taken into consideration during the planning. The systems shall incorporate the latest technology and shall be manufactured in an ISO 9001 environment.
2.0
SYSTEM DESCRIPTION
2.1
Male and Female Wards The computerized systems shall incorporate logic circuits to enable room data and time information to be processed. With the nurse call systems it shall be possible to handle up to 64 zones, which can be each divided into 6 logical sub-zones. This division shall be achieved by software. The maximum number of all logical and physical zones shall be limited to 240. For each physical zone up to maximum of 50 patient rooms shall only be allowed. Furthermore the system allows flexibility to adapt the allocation of room numbers according to individual needs. System characteristics The nurse call system shall be designed for quick and easy installation. The software shall allow individual flexibility, adapting to any changes in the application. For example patient room numbers shall be quickly changed and allocated during or after installation. Call and presences shall be displayed at the operating station, in corridors, in duty rooms and patient rooms. With the speech option, the call shall be answered from any one of this points. Operating the presence push button shall result in: cancellation of the call within the room, activation of the call transfer and preparation of an emergency call. Existing calls from other rooms shall be transferred to this room. Systems with a speech facility shall allow communication from room to room or between duty room and the patient. Speech facility shall be available from every bed. The computerized nurse call system shall be operated in a centralized, decentralized or combined mode, according to the requirements. The system shall use a single six cores cable for power supply, speech and data lines.
System structure The computerized nurse call system shall consist of 3 components: Page 3 of 10
AL TADAWI HOSPITAL
PART B - SECTION 19 NURSE CALL SYSTEM
The operating computer (PC), The nurse call control unit (NCS), The room equipment with individual hand set consisting of Nurse call & speech function at every bed. The operating computer and the nurse call control units shall be independently functional. Operating Computer The operating computer shall be used as a display unit for the information of the nurse call control unit (NCS). When used with a communication unit and in connection with a speech facility, the operating computer shall enable general address calls and direct calls to rooms and beds to take place. Calls on the system and staff presences shall be displayed in tabular form. Data specific to each patient shall be entered into an internal data memory. These data shall be displayed on the screen of the operating computer whenever that patient calls. Nurse Call Control Unit (NCS) The nurse call control unit shall be the main control unit. It shall be built as a multiprocessor unit and shall comprise of a microprocessor, and audio adapter card and a communication processor unit. Additional control cards shall be added according to requirements. The control programs and configuration data of the nurse call system shall be loaded via the operating computer. Room equipment Information on the nurse call systems shall be received in rooms using different types of system units. For example room terminals with displays shall show calls in order of priority. Remind calls and presences shall be displayed continuously if there are no normal, emergency or enhanced calls. The connection board for room terminals and the electronic module shall be used as a room distribution point and shall allow easy wiring to patient call equipment. It shall be possible to substitute operating equipment without speech facility. For example call push buttons or pear and multiple push buttons. In the case of nurse call systems with speech, facility communication handsets shall be possible to be installed. These handsets in addition to the call functions shall allow the control of radio and lighting and provide a means of private two-way conversation. Units shall be capable of providing integrated telephone functions. The nurse stations and duty rooms shall be equipped with master stations. These shall provide a means to set a presence indication as well as allowing zone linking. In addition the systems shall provide speech facility, general address calls and direct speech to beds or rooms as appropriate.
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AL TADAWI HOSPITAL
PART B - SECTION 19 NURSE CALL SYSTEM
In corridors, calls shall be indicated in clear text on information displays or outside the room by the corridor lamp. Following types of calls shall be indicated: Type of call
As per DIN 41050, Part 1
Visual signals
- Patient calls normal call
nurse call (abbr.: call)
permanent light - red -
bathroom/WC call
bathroom or WC call
permanent light white
enhanced bathroom/WC call
enhanced call
- Staff calls: emergency call
nurse call with emergency call
flashing light - red permanent light green -
doctor call
flashing light - white -, red - green
(no statement)
flashing light - white permanent light green -
- Further calls: diagnostic call
diagnostic call enhanced call
flashing light - red -
remind call
in memory switching
flashing light - red (slow blinking rhythm)
flashing light - white -
doctor call
bathroom/WC emergency call
Also, refer to hospital specialist room data sheet for actual requirement. In addition to the visual signals, acoustic signals shall also be sent to all rooms where presences are set. The nurse call system shall distinguish between two call categories. Normal and bathroom/WC calls shall belong to category 1. Doctor, emergency, diagnostic and priority calls as well as enhanced bathroom/WC calls and bathroom/WC emergency calls shall belong to category 2. In the case of acoustic call transfer, calls of categories 1 and 2, as well as doctor and telephone calls, shall be identified by different call intervals. 2.2
TRIAGE, RESUSCITATION, ACUTE TREATMENT, SHORT STAY WARDS, ICU, RECOVERY & ALL TYPE OF OPERATION THEATRES The nurse call system for these wards shall be able to handle up to 16 physical zones (Zone controllers / Main control units), which can be each subdivided into 3 logical groups. The system shall be able to control up to 127 patient rooms via a corridor data-bus for each zone controller (main control unit). Call and presences shall be displayed in the duty room. By activating a presence push button, the call from the concerned room shall be cancelled, the call transfer shall be Page 5 of 10
AL TADAWI HOSPITAL
PART B - SECTION 19 NURSE CALL SYSTEM
activated and the emergency call shall be prepared. The system shall have the follow me facility. (Calls from other rooms should be forwarded and audibly indicated to rooms where presence is set. The system shall be flexible to adapt the room numbers and the call names according to the hospital needs and recommendations. In corridors, calls shall be visually indicated by corridor lamps and information displays that can be wall or ceiling mounted. Following type of calls shall be indicated: Call Type Patient calls Normal call Bathroom/WC call Enhanced bathroom/WC call Staff calls Emergency call Bathroom emergency call Doctor call Other call types Remind call
Optical signals Permanent red light Permanent white light Flashing White light
Flashing red light and permanent green light Flashing white light and permanent green light Sequential flashing white, red then green light s Flashing red light blinking) Flashing red light
Diagnostic call
(slow
Nurse Station: The nurse station shall have the following functions: -
Call and status identification with following indicators: patient room, bed, normal call, bathroom/WC call, emergency call, bathroom/WC emergency call, doctor call, answered call in remind function, presence, fault, following calls.
-
Call activation (call button).
-
Cancel and presence button.
-
Call reminder.
-
Free selection of zone linking from a special module.
-
Simultaneous display of several calls and presence’s.
-
Can be upgraded to have speech and public addressing with no major changing in the system wiring.
Patient handset (multiple push button) functions: -
Nurse call release Page 6 of 10
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PART B - SECTION 19 NURSE CALL SYSTEM
-
Auto-release unbreakable plug system with 2 m cord length.
-
Automatic call release as a plug call when plug ejected from the auto release plug system
-
Easily repaired and changed if required.
-
2 light control buttons.
General Equipment: The system shall include at least but not only the following main equipment which can be upgraded at any time without any major changes: 1.
Main control unit (Zone controller).
2.
Data bus terminator unit.
3.
System cabling.
4.
Power supply (24 V - DC).
5.
Electrical safety components.
Scope of work: 1. The main control unit shall support the following: All types of patient and staff call including: normal call, bathroom/WC call, priority call, enhanced bathroom call, emergency call, doctor call and bathroom emergency call. Different optical signals for each type of call (different colours and colour sequences). Different audio signals for all type of calls (different frequencies). Can be upgraded to support interface with the following: -
Computer.
-
Printer.
-
Paging system.
2.
The system cabling shall be 4 twisted pairs telephone cable in addition to one pair 1.5 – 2 mm2 for power distribution in the corridor data bus.
3.
The power supply of the system shall be 24V self-regulated.
4.
Safety features like emergency mode and short circuit protection shall be built-in the system. Page 7 of 10
AL TADAWI HOSPITAL
PART B - SECTION 19 NURSE CALL SYSTEM
Ward (Nurse station) equipment: The following equipment shall be available in the Nurse Station: 1.
LCD alphanumeric display (Display module unit) for displaying all ward information.
2.
LCD alphanumeric display (Duty Selection Unit) for selection a predefined link between wards.
3.
A reminder button for changing the normal call into a reminded call (with muted sound) for a certain predefined period of time.
4.
A bus connection socket can be added to the station to enable an easy upgrade to a master station unit with a power saving LCD touch screen and speech facility.
5.
It shall be possible to upgrade the system to have LED dot information display in the corridor to display all calls information without any modification in the system (only the cable connection to the display).
6.
All active components shall be checked for functionality via the main control unit automatically every 30 seconds.
Speech components may be added to the system at the nurse station when required to upgrade with no additional major modifications in the system. Room equipment: The following equipment shall be available in the patient rooms
Cancel and presence button: Equipped with a button, LED reassurance lamp and a buzzer. It shall be used to cancel the call and set presence of the nurse in the room. It shall be installed at the door entrance. When the nurse is present in the room, the buzzer shall indicate if there is any calls and their type from any other room in the ward. Nurse call module with socket: It shall be used for Normal call and Emergency call (when nurse is present). It shall be installed beside the bed or in the bed head unit. The socket shall be used to connect a multiple push button for the patient. This unit shall be active component unit having its own logical address. 1.
The over door light shall have a plastic base light grey RAL 7040, with white lamp cover having 3 sections with different colour lamps (white, red and green) to Page 8 of 10
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PART B - SECTION 19 NURSE CALL SYSTEM
identify the type of call / presence in the room. Patient hand sets with big red button having the nurse sign to enable the easy use as well as an unbreakable self-release plug system. There also shall be a reassurance LED behind the button to indicate if there is a generated call. 2.
All active components shall be checked for functionality via the main control unit automatically every 30 seconds. Pull cord (in the bathrooms): Splash proof with 2 m long red cord having a big red end with the nurse sign to enable the easy identification. Individual cancel button: This shall be used to cancel the bathroom calls independent from the main cancel/presence button in the room. Doctors/ Cardiac Call This is a special button for calling the Doctors. This call shall be used for emergencies. Over door light (Electronic module for patient rooms): The electronic module shall be the central control unit for the patient room. At the same time the electronic module shall be used as a corridor lamp. As active units, a display module, a speech module and up to eight call modules shall be connected via the bed data-bus. The active units shall be addressed with an eight-digit alphanumeric text. All electronic modules shall be equipped with call and cancel circuits for passive circuits.
3.0
4.0
The over door light shall have a plastic base light grey RAL 7040 surface mounted, with white lamp cover having 3 sections with different colour lamps (white, red and green) to identify the type of call / presence in the room. This unit shall be active component unit having its own logical address. EXTERNAL EQUIPMENT INTERFACING The nurse call systems shall be extended by adding equipment via the interface. For example, it shall be possible to connect the paging system to the nurse call system. Furthermore it is possible to connect internal messages, such as fire alarms or technical alarms via interface units. SAFETY The nurse call system shall be self-monitoring. Any malfunctions shall be selectively shown on each display terminal. In the case of a total failure of the nurse call control unit (PRZ) the system shall operate in an emergency mode and provide call functions, call cancel, presence indication and call transfer to rooms where presence has been set, in addition to the visual indication of the corridor and zone lamps. In case of power failure, calls shall remain stored until the power supply is connected again. An auto-release plug mounted onto a pear or multiple push buttons as well as on the patient terminal or patient handset shall allow a safe disconnection and thus avoid damage to the plug and socket units found in conventional arrangements. When a plug is inadvertently removed a "plug out" message shall be shown on the display units. Lamp outputs shall also be short circuit protected. Electrical safety and EMC requirements shall conform to appropriate EC directives. Page 9 of 10
AL TADAWI HOSPITAL
5.0
PART B - SECTION 19 NURSE CALL SYSTEM
MAINTENANCE AND SERVICE The equipment shall be durable. Room equipment such as the room terminal and the electronic modules shall be possible to be replaced at any time, simply by plugging and unplugging, without interrupting the operation of the system. A diagnostic function shall allow the display of information regarding the actual operational condition of the system on screen of the operating computer. It shall be possible to connect a modem to the operating computer enabling remote diagnostics and the update of new systems software. This shall allow capability to diagnostic problems and enable software improvements.
Page 10 of 10
AL TADAWI HOSPITAL
PART B - SECTION 20 CENTRAL CLOCK SYSTEM
SECTION 20 CENTRAL CLOCK SYSTEM
Page 1 of 4
AL TADAWI HOSPITAL
PART B - SECTION 20 CENTRAL CLOCK SYSTEM
SECTION 20
CENTRAL CLOCK SYSTEM
INDEX
1.0
GENERAL
Page 2 of 4
AL TADAWI HOSPITAL
1.0
PART B - SECTION 20 CENTRAL CLOCK SYSTEM
GENERAL The Contractor shall allow for the supply, installation, testing and commissioning of a Central clock system comprising of Time Control Center, TCXO modules chime modules, secondary clocks, power supply units and all necessary cabling and termination. The system shall be generally as indicated on the drawings and as herein specified, to the approval of the Engineer. The equipment shall be UL standard 863 and must be CSA certified. The contractor shall submit the material submittal strictly based on each and every clauses of the specification for strict quality assurance and performance of the system. Alternative proposal will not be accepted in whatsoever the reason, unless the alternative manufacturer comply the specification requirements of the system. Compliance statement shall be submitted with supporting design calculation and product literature and schematic diagrams for engineers approval. The equipment shall meet the following requirements.
1.1
Time Control Center The time control center shall provide accurate time keeping for control of secondary clocks such as Celestra, BCD data clocks, synchronous wire, power line carrier, and a minute impulse clocks . The Time control center shall have a programmable time and day of week referenced control of six output circuits. A liquid crystal display shows the time, day of week, and the status of the six output circuits. The display is also used for programming, editing and reviewing of stored programs. The state of the six output circuits is programmed by the user through a keypad or may also be controlled by six manual override switches. The user may program from one to four independent schedules within the Time Control Center. Changing between schedules is accomplished from the keyboard and may be done at any time. The display in its run mode shall indicate the time, day of week, circuit status, and what schedules have been selected. When the programming mode has been entered the display shall lead programming sequence by flashing what is to be selected. Responses to prompts are entered via the keyboard using either the “Yes” or “No” keys. The control switches shall have 3 position (on/auto/off) maintained switches. Manual “on/off” control shall override the programmed functions. The ”Auto” position provides programmed functions to occur. Complete manual control of secondary clocks shall be provided via Man/Auto/Off switches for synchronous wired and power line carrier systems with generator start. The Time Control center shall meet/have the following operational and functional requirements.
Page 3 of 4
AL TADAWI HOSPITAL
a. b. c. d. e. f. g. h. i. j. k. l. m. n. o. p. q. r. 1.2
PART B - SECTION 20 CENTRAL CLOCK SYSTEM
Microprocessor based controller Controls synchronous Wired RS-232 interface for synchronization to WWV 6 local program control circuits 7day programming (seconds resolution) Automatic daylight saving time correction Manual override switches Interactive Programming Liquid crystal display (6 digits) All programmed times available to all circuits and schedules 4 program schedules 1000 program events AC line synchronous or DC Quartz time base 19” rack mountable Impulse clock control Coded Receiver Interface Temperature Compensated Crystal Oscillator - (TCXO) Must comply with UL standard 863
Programming Keypad The 12 segment shall be used to input all programming including setting of the time and date, daylight saving time changes, schedules changes, and selection of 12 or 24 hour display format. It shall be possible to secure the keyboard by an access code which shall prevent tampering or unauthorized program modifications. Temperature Compensated Crystal Oscillator The Temperature Compensated Crystal Oscillator (TCXO) shall be used to stabilize the power line frequency. The temperature compensated crystal module shall provide a source of frequency reference to the central controller. This module shall provide accuracy of + 3 seconds per month from 32 degree F to 122 degree F.
1.3
1.4
Receptacle Assembly The receptacle assembly shall be used to connect surface mounted clocks equipped with four position connectors. It shall be mounted on a stainless steel single gang plate that measures 2-3/4” wide by 4-1/4” high. Analog Clock Assemblies Standard Features: 400mm dia analog clock Anodized aluminum housing Black numbers on white background Single or double sizes, wall or ceiling mounting bracket 24V polarized 1/1 with pulses from master clock Protection IP44 DESCRIPTION The analog clocks provided shall have high visibility under a variety of ambient light conditions. The clock shall be round shape of 400mm diameter. Clocks shall also be connected to power line carrier/synchronous timing inputs that provide hourly and 12 hour corrections. A capacitor in each clock maintains timekeeping for approximately 12 hours in the event of power failure in the facility.
Page 4 of 4
AL TADAWI HOSPITAL
PART B - SECTION 21 PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
SECTION 21 PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
Page 1 of 9
AL TADAWI HOSPITAL
PART B - SECTION 21 PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
SECTION 21
PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
INDEX
1.0
GENERAL
Page 2 of 9
AL TADAWI HOSPITAL
1.0
PART B - SECTION 21 PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
GENERAL The Contractor shall allow for the supply, installation, testing and commissioning of a Public Address system comprising of Amplifiers, Audio matrix units, loudspeakers, FM/AM tuner, Twin Cassette deck, CD player, Digital Voice Announcer, Multi-zone paging microphone and all necessary cabling and termination. The system shall be generally as indicated on the drawings and as herein specified, to the approval of the Engineer. The complete system shall be supplied by a specialist Subcontractor having at least 5 years experience in the field. All equipment supplied shall be from reputed manufacturers and shall be installed by the authorized representative of the manufacturer. In general, the main system shall allow making vocal announcements from different microphones as shown in the layout drawing, playing recorded message announcements and playing background music via a twin tape deck, a multi disc CD player and one AM/FM tuner. Selection of music for the public areas shall be from the amplifier rack itself. The system control console shall be located in the Security Office. It shall be possible to make announcement from any paging microphone to the corresponding areas or to any other zones required at the site. Audio matrix shall be used with appropriate wall mounted selector push buttons provided near to each microphones. It shall be possible to select any or all zones for paging from the microphones. The recorded message module shall be initiated manually by push buttons or automatically by potential free contacts from the Fire Alarm control panel. System shall be configured in such a way that when a paging to the area where local audio/visual system is introduced, paging from main system shall override local programme being conducted. For paging purposes the entire area shall be divided into 16 zones. Volt-free contacts corresponding to alarm conditions of each zone and roof shall be made available at the amplifier rack by the Fire Alarm system supplier. The digital storage module shall be capable of storing three different messages, ‘Alert, Evacuate and All Clear’ each of at least 18 seconds duration. It shall be possible to manually override an automatic announcement. Output of Audio matrix to the corresponding zone shall be through dedicated amplifiers for each zone. Common amplifiers for different zones will not be acceptable. Modular amplifiers as specified with all plugg-in input modules shall be provided for Central reception and integrated amplifier for other zones. The system shall be provided with 22 zones minimum to programme each zone as per the requirement of the user.
1.1
Amplifier Rack
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AL TADAWI HOSPITAL
PART B - SECTION 21 PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
The amplifiers and associated equipment shall be housed in a standard 19” rack with glass door. Ventilation panels shall be provided for proper air circulation and cooling. 1.2
Modular Amplifier Mainframe The amplifier shall be modular construction with preamplifiers pluggable onto a mainframe. Upto six preamplifiers could be added as required providing microphone input module, lineinput module, alarm tones, digital voice module, Chime module etc. Amplifiers with built in music sources input and mic input will not be accepted. Control over the total mainframe shall be achieved through audio monitoring combiners. The motherboard shall also be capable of accepting switch selectable preannouncement chimes. The power rating of the amplifiers shall be 75W, 150 watts or 300 watts depending on the loudspeaker load requirements. No amplifier shall be loaded more than 80% of its rated capacity. Slave amplifiers shall be used to meet additional power requirements. The amplifiers shall have the following technical characteristics. Output power Nominal RMS : Maximum RMS(100V) : Output Voltage Output Regulation Frequency Response Total harmonic distortion Output noise Sensitivity AC Input Operational temperature
1.3
120 W or 250W 135W or 300W : 100V : 1.25dB/1.5 dB 100Vline, 3 dB down : 60 Hz-20,000Hz : 85dB : 0dBm, 775mVolts : 220V,50Hz : -20 to 45 deg C
Microphone input Module The module shall be a basic general purpose low impedance balanced microphone input, with a selectable phantom power facility. In addition it can be configured to process ambient noise sensor signals when used in conjunction with level regulating combiner. It shall have the following specifications:
1.4
Sensitivity Input impedance
: :
200uV maximum. 350 Ohms @ 1kHz. Suitable for upto 200 Ohms microphone impedance.
Frequency response Signal/noise ratio Distortion
: : :
30Hz and 18kHz 150 Ohms source 55dB max. sensitivity, 150 Ohms source 0.1% at nominal output 1kHz, max. sensitivity
Balanced line input module Page 4 of 9
AL TADAWI HOSPITAL
PART B - SECTION 21 PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
The balanced line input module shall be a general purpose balanced 600 Ohminput, with a selectable phantom power facility for use with microphones having built-in preamplification. It can also be configured for inputs from 100V line source by switch selection. It shall have the following specifications:
1.5
Sensitivity
:
Input impedance Frequency response Signal/noise ratio Distortion
: : : :
150mV maximum, 100V minimum by internal switch selection 15k Ohms (300mV),100k Ohms (100V). 30Hz to 20kHz 65dB max. sensitivity, input terminated 0.1% at nominal output 1kHz, max. sensitivity
FM/AM Tuner The tuner shall be a modular Quartz-PLL synthesizer tuner with random presets for 30 FM/AM stations. It shall have a 4 letter station name memory and all 30 preset stations are automatically sampled in sequence for the user to decide a station to listen to. The tuner shall be connected to the system using balanced line input specified elsewhere in the specification. The tune shall be Pioneer or equal. Tuning Range Sensitivity Frequency response Signal to Noise Ratio T.H. Distortion Stereo Separation Power Consumption
1.6
: AM - 530-1700kHz VHF/FM - 87.5-108 Mhz : 31.2dBf (1.3uV, 75Ohms) : 30Hz –15,000Hz +/- 1 dB : (IHF) Mono/Stereo 76dB/73dB (at 85dBf) : 0.3% : 40 dB @ 1kHz. : 10W
Digital Voice Announcer Module The Audio Message Storage module shall be pluggable onto the mainframe and shall provide on site recording from microphone or tape for verbal warning, informative messages or a combination of the two allowing system operators to record and rerecord their own messages independently. Once recorded, the messages may be played back any number of times without degradation of the audio quality. The Solid State Audio Message Storage module shall be fitted in the amplifier mainframe front panel. The design uses digital audio conversion and storage of high quality audio announcements, each of up to 36 seconds in length. It shall be designed with internal battery backup facilities to ensure that the message data is retained when the power to the amplifier mainframe is removed. It shall also provide internally selectable message override functions. These enable alarm messages to be triggered remotely by external control line like from fire detection system.
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AL TADAWI HOSPITAL
PART B - SECTION 21 PUBLIC ADDRESS / BACKGROUND MUSIC SYSTEM
The maximum number of messages can be stored in each module shall be 2. 2 Nos. such modules shall be included in the system for 3 messages. It shall have the following front panel controls: Rec/Play, Record/Preview, Step sequence (1-8) and shall have an audio bandwidth of 100Hz to 5.5kHz. On playback, external control lines(dry contacts from Fire Alarm Panel) enable messages to be triggered individually or in sequence by external equipment. 1.7
Integrated Amplifier The amplifier shall be rated 60W or 120 W suitable to drive the loudspeakers and shall have a 20% spare capacity. It shall be a full feature integrated amplifier with four universal inputs, front panel activity indicators and shall be rack mountable. It shall be possible to add slave amplifiers for additional power requirements. The amplifier shall have the following characteristics. Input Output regulation Distortion Frequency response Power rating
: : : : :
220/240V, 50Hz
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