PowerGrid HandBook
Short Description
Power...
Description
how to apply for electricity connection
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This handbook is published by PowerGrid Ltd in collaboration with SP Services Ltd December 2002 Procedures and requirements highlighted in this handbook are correct at the time of printing. Any changes that may arise will be reflected in the next edition. ISBN: 981-04-6932-3 ▲
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Important Contact Numbers
Tel No
Fax No
SP SERVICES LTD General Enquiry on Application For Connection to Transmission System
68238287 68238340
68238289
Consumer Connection Agreement Contracts Section
68238282
68238289
Testing and Turn-On Appointment Supply Application Section Installation Section
68238287 62777064
68238289 62777044
Opening of Utilities Accounts Enquiry
1800-2356841
68238219
POWERGRID LTD Endorsement of Substation Drawings • East zone • West zone
68238555 68238556
68238564 68238564
Installation of Meters Senior Manager (Meter) Enquiry
62777000 62777005
62777008
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Table of Contents
1
GENERAL INFORMATION
7
1.1
Introduction
7
1.2
Connection Voltages And Supply Frequency
7
1.3
Submission Of Application
8
1.4
Provision Of A Substation
8
1.5
Domestic Premises And Load Requirement Not Exceeding 45kVA
9
1.6
Meter
9
1.7
Tariffs For Non-Contestable Customers
10
1.8
Payment For Electricity Charges By Contestable Customers
10
1.9
Opening Account And Payment Of Security Deposit For Use Of System (UOS) Charges
2
3
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2
10
1.10 Termination Of Account
10
1.11 Disconnection Of Service Cables
10
APPLICATION FOR LOAD CONNECTION
11
2.1
Distribution Connection
11
2.2
Transmission Connection
14
TRANSMISSION CHARGES
17
3.1
Consumer Connection Agreement
17
3.2
Use of System (UOS) Charges For Non-Contestable Customers
18
3.3
Use of System (UOS) Charges For Contestable Customers
19
3.4
Temporary Supply
22
3.5
Supply For Power Stations
22
4
ENERGISATION AND TURN-ON PROCEDURES 4.1
23
Non-Domestic Premises (Load Requirement Not Exceeding 45kVA), And Domestic Premises Where Electrical Installations Are Provided And Pre-Inspected Or Previously Inspected And Energised
4.2
5
6
23
Premises With Direct Connection From PowerGrid’s Transmission System
24
4.3
Booking An Appointment
25
4.4
Premises With Indirect Connection (i.e. Premises In a Multi-Metered Development)
27
4.5
Modification To An Existing Electrical Installation
28
4.6
Licence To Use Or Operate An Electrical Installation
28
4.7
Certificates And Statements For First Energisation Of Service Connection
28
4.8
Lead-Time For Application For Service Connection
29
4.9
Notes To Be Read In Conjunction With Application Procedure
31
CUSTOMER’S INSTALLATION REQUIREMENTS
35
5.1
Requirements For HV And LV Connection (22kV And Below)
35
5.2
Requirements For EHV Connection (230kV And 66kV)
37
METERING REQUIREMENTS
39
6.1
General
39
6.2
Location Of Meter
40
6.3
Meter/Service Board Specifications (Single-Phase And 3-Phase Services, Not Exceeding 100A Per Phase)
6.4
42
Wiring, Layout Of Meters, MCBs, etc In Centralised Meter Rooms, Meter Compartments/ Riser Ducts/Cupboards
42
6.5
Submission Of Layout Plans
43
6.6
Meters For 3-Phase Low Voltage Connection (Exceeding 100A Per Phase)
43
6.7
High Voltage/Extra High Voltage Metering
44
6.8
Master- And Sub-Metering Scheme
46
6.9
Metering Requirements
46
6.10 Contestable Customers
48 ▲
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7
APPENDICES 1
Application Form For Connection To PowerGrid Transmission System
2
52
Form CS/3 – Letter Of Consent From The Landlord/Management Corporation
4
50
Consultation Form For Connection To PowerGrid Transmission System
3
49
53
Form CS/3H – Letter Of Consent From The Housing & Development Board
54
5
Request To Handover Substation
55
6
Application For The Supply Of Water, Electricity And/Or Gas
56
7
Application For Interbank Giro
57
8
Form CS/5 – Application For Inspection Of Electrical Installation
58
9
Types And Layout Of Substation
60
10
Submission Of Substation Site And Design Plans
61
11
6.6kV/LV Substation (4 drawings)
62
12
22kV/LV Substation (5 drawings)
66
13
Heavy Aluminium Louvred Door For Electric Substation (6 drawings)
71
14
Gate Details (2 drawings)
77
15
Checklist For Substation Building Plan Submission
79
16
Substation Layout Requirements To Be Incorporated In The Architectural Plans
80
17
General Requirements For EHV Substation (66kV And 230kV Only)
82
18
• Protection Requirements For Customer’s 22kV and 6.6kV Main Incoming Switchgear
83
• Protection Requirements For Customer’s LV Main Incoming Switchgear
84
• Type 1: Customer 66kV Feeder Connection (Without Embedded Generation Plant)
85
• Type 2: Customer 66kV Feeder Connection (With Embedded Generation Plant)
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4
86
• Type 3: Customer 66kV Feeder Transformer Connection
87
• Type 4: Customer 230kV Feeder Connection
88
• Type 5: Customer 230kV Feeder Transformer Connection
89
19
Application For De-Energisation/Re-Energisation (ADRE)
90
20
Statement For De-Energisation And Re-Energisation (SDRE)
91
21
Certificate Of Readiness For The Energisation Of Service Connection
92
22.1 Form CS/6 – Request For Installation Of Electricity kWh Meter For New Supply Under Direct Supply From PowerGrid (Contestable Customer)
94
22.2 Form CS/7 – Request For Installation Of Electricity kWh Meter (For Load Exceeding 45kVA) Under Multi-Metered Building Scheme 23
Application For Appointment For Energisation Of Service Connection By Fax
24
95 97
• Technical Requirements For Service Cable And Meter Compartment For Landed Houses • Standard Meter Compartments At Gate Pillar
98 99
25
Standard Meter Board
100
26
Standard Size For Single-Phase Meter Board
101
27
Standard Size For Three-Phase Meter Board
102
28
CT Meter Panel For Low Voltage Supply
103
29
Methods Of Sealing Meter Panels
104
30
Enclosure For Low Voltage Metering Current Transformers
105
31
HV Metering Kiosk Requirements (For 1 Or 2 Feeders)
106
32
• HV Metering Kiosk Requirements (For 3 Or 4 Feeders)
107
• CT Meter Panel For Low Voltage Supply
108
33
HV Metering Panel Requirements (For 1 or 2 Feeders)
109
34
Voltage Ratio, Sequence And Phase Angle Tests Report
110
35
Basis For The Service Connection Charge
111
36
Standard Service Connection Cables
112
37
Certificate of Compliance Regulation 5(2) Of The Electricity (Electrical Installations) Regulations 2002
38
113
Statement Of Turn-On Of Electricity Regulation 5(3) Of The Electricity (Electrical Installations) Regulations 2002
114
39
Requirements For Exempt Generation Facility Not Exceeding 1MW
115
40
List of Standards • IEC Standards
116
• British Standards
119
• Singapore Standards
120
• Other Standards
120
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General Information
1
General Information
1.1
INTRODUCTION
1.1.1
SP Services Ltd (SPSL) and PowerGrid Ltd (PowerGrid) are subsidiaries of Singapore Power Ltd. SPSL provides support services for the electricity market. It receives requests for electricity service connection; offers terms and conditions of service connection; arranges for service connection energisation/turn-on; and collects transmission charges, security deposits and charges for other services on behalf of PowerGrid. SPSL also bills customers for consumption. PowerGrid develops, operates and maintains transmission and distribution facilities.
1.1.2
The supply of electricity and electrical installation practices are governed by the Electricity Act and its subsidiary legislation.
1.2
CONNECTION VOLTAGES AND SUPPLY FREQUENCY
1.2.1
In Singapore, customers’ load installations are connected at the following voltages:
1.2.1.1
Transmission voltage of 66kV and 230kV
1.2.1.2
Distribution voltage of 230V, 400V, 22kV (may vary within ± 6%) The supply voltages are classified in the following categories:
1.2.1.3
Low voltage (LV) refers to 230V, single-phase and 400V, 3-phase
1.2.1.4
High voltage (HV) refers to 22kV
1.2.1.5
Extra high voltage (EHV) refers to 66kV and 230kV
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General Information
1.2.2
The following connection schemes are provided, according to customers’ load requirements:
1.2.2.1
230V, 50Hz, single-phase, up to maximum of 23kVA, 100A
1.2.2.2
400V, 50Hz, 3-phase, 4-wire
1.2.2.3
22kV, 50Hz, 3-phase, 3-wire for a Contracted Capacity of:
1.2.2.3.1
between 1,700kW and 12,750kW for 2 HV services
1.2.2.3.2
between 12,751kW and 25,500kW for 4 HV services
1.2.2.4
66kV, 50Hz, 3-phase, 3-wire for connection with minimum Contracted Capacity of 25,500kW
1.2.2.5
230kV, 50Hz, 3-phase, 3-wire for connection with minimum Contracted Capacity of 85,000kW
1.2.3
Where the customer requires a connection voltage and/or frequencies that differ from those specified above, the customer is required to provide, install and maintain the necessary transformation equipment.
1.3
SUBMISSION OF APPLICATION SPSL serves as a one-stop customer service centre. It receives all application forms on behalf of PowerGrid, and responds to all applications made by the Licenced Electrical Worker (LEW), who acts as the customer’s agent for connection to the transmission system. Customers applying for their installations to be connected to PowerGrid’s transmission system must submit their applications through their LEWs. Every application must be accompanied by all supporting documentation requested by SPSL. A copy of the Application Form is shown in Appendix 1. For a development in the conception/planning stage, the customer is advised to seek consultation regarding PowerGrid’s requirements, such as the provision of a substation, for load connection. The Consultation Form (Appendix 2) must be submitted directly to PowerGrid by the customer’s LEW.
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1.4
PROVISION OF A SUBSTATION
1.4.1
Direct service connection from PowerGrid’s LV network to the customer’s installation is available for a small load requirement not exceeding 280kVA (400A). However, the provision of a direct service connection is dependent on the available network capacity in the vicinity. If there is insufficient capacity, the customer is required to provide a substation for the connection.
General Information
1.4.2
For a larger load requirement exceeding 280kVA (400A), the customer has to provide a substation for PowerGrid to install necessary equipment to cater for the load.
1.5
DOMESTIC PREMISES AND LOAD REQUIREMENT NOT EXCEEDING 45kVA
1.5.1
For premises where the electricity meter has already been installed by PowerGrid and no extension or rewiring work is required, electricity service connection will be turned-on on the 4th working day from the date of the opening of an account with SPSL.
1.5.2
For premises where there is no electricity meter or where extension or rewiring work is required, the customer has to engage an LEW and submit an application for load connection (See Section 2).
1.6
METER All meters required for measuring a customer’s electricity consumption and demand (where applicable) are provided and maintained by PowerGrid. The customer provides meter boards, compartments, kiosks etc, as PowerGrid may require for the installation of its metering equipment.
1.6.1
Master- And Sub-Metering A “Master-meter” is a meter measuring the consumption for all units and common areas in a building or cluster of buildings which are used or occupied by multiple consumers. A “Sub-meter” is a meter measuring the consumption for a unit in a building or cluster of buildings used or occupied by multiple consumers, whose electricity is taken through a Master-meter.
1.6.1.1
Multi-Metered Premises The following are categories of multi-metered premises:
1.6.1.1.1
Residential premises which have landlord and tenant supply connections
1.6.1.1.2
Commercial complexes which have landlord and tenant supply connections
1.6.1.1.3
Multi-storey factories or industrial complexes which have landlord and tenant supply connections
1.6.1.1.4
All multi-metered premises fall under the Master- and Sub-metering scheme, with the exception of HDB residential premises.
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General Information
1.7
TARIFFS FOR NON-CONTESTABLE CUSTOMERS
1.7.1
Tariffs are currently charged for low tension, high tension and extra high tension electricity consumption.
1.7.2
Tariffs are subject to change and are published by SPSL from time to time. Online information on the latest electricity tariffs are available at www.spservices.com.sg.
1.8
PAYMENT FOR ELECTRICITY CHARGES BY CONTESTABLE CUSTOMERS Contestable customers pay to SPSL or authorised retailers, charges for electricity consumption as ascertained by meters, and transmission charges and other fixed charges as determined by SPSL. Payment for electricity charges must be made on or before the due date specified in the bill.
1.9
OPENING ACCOUNT AND PAYMENT OF SECURITY DEPOSIT FOR USE OF SYSTEM (UOS) CHARGES The customer must open an account and place a security deposit for UOS charges with SPSL upon application for energisation of service connection.
1.10
TERMINATION OF ACCOUNT Non-contestable customers must give 4 business days’ notice and contestable customers must give 12 business days’ notice to terminate an account. Such notices must be in writing.
1.11
DISCONNECTION OF SERVICE CABLES Disconnection work involves the de-energisation and removal of service cables and equipment (See 4.9.6). The following are indicative lead-times for the work:
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1.11.1
For disconnection and removal of LV service cables where road-opening work is not involved, the lead-time is about 5 business days. Where road opening work is involved, a lead-time of 1 month is required.
1.11.2
For disconnection of 6.6kV and 22kV where removal of service cables and equipment are involved, the lead-time is about 1 month.
1.11.3
For disconnection of 66kV and 230kV service cables, the service cable and equipment are de-energised within 10 business days, subject to the approval of the Power System Operator (PSO). The subsequent removal of service cables and equipment will depend on the operational requirement and approval of the PSO.
Application For Load Connection
2
Application For Load Connection
2.1
DISTRIBUTION CONNECTION
2.1.1
Introduction Each premises can have only one customer’s intake connection point. For modification of connection (such as upgrading of the load requirement) to existing premises, the customer is required to amalgamate the existing service connection into one intake.
2.1.2
Consultation For a development in the initial planning stage, the customer is advised to seek consultation with PowerGrid to ascertain PowerGrid‘s requirements for a new or modified connection to the transmission system. The LEW is required to submit the Consultation Form (Appendix 2), together with a site/ location plan to PowerGrid. After receipt of the submission for consultation, PowerGrid will send a reply stating the approved load and other technical requirements, such as the provision of substation requirements necessary for the load connection to the transmission system.
2.1.3
Application The Application Form (Appendix 1), together with a copy of the site/location plan, must be submitted to SPSL by the LEW for new or modified connections of new or existing premises to the transmission system.
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Application For Load Connection
2.1.3.1
Processing Of Application Generally, SPSL responds to applications within 10 business days. The responses are made according to the following customer categories:
2.1.3.1.1
Contestable Customer – A Consumer Connection Agreement, containing the service connection charge payable, the offer letter and the standard terms and conditions with respect to the distribution service connection. – If a substation is required, a letter stipulating the requirements will be forwarded to the customer, and an Agreement offered after the substation’s plans are endorsed.
2.1.3.1.2
Non-Contestable Customer – A Quotation, containing service connection charge payable and the conditions of service with respect to the distribution service connection. – If a substation is required, a letter stipulating the requirements will be forwarded to the customer. A Supply Agreement, including the service connection charge payable and the terms and conditions with respect to the distribution service connection, is offered after the substation’s plans are endorsed.
2.1.3.2
Commencement Of Work – PowerGrid commences work only when the Agreement has been signed and received by SPSL, together with payment of service connection charges.
2.1.4
Types Of Premises
2.1.4.1
Multi-Metered Premises
2.1.4.1.1
A multi-metered premises is one where the landlord/MCST (i.e. a mastermetered consumer or directly connected consumer) receives bulk intake service connection from PowerGrid, and transforms/reticulates the supply to all the tenants (i.e. sub-metered consumers) within the premises. Any application for new or modified connection (including upgrading) for the bulk intake to the multi-metered premises must be made by the landlord through its LEW. A master-metered consumer means a consumer that is responsible for the common usage of a master-metered installation which is connected to the transmission system. A master-metered installation means an installation in which supply is received by a master-metered consumer and sub-metered consumers.
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Application For Load Connection
A sub-metered consumer means a consumer, other than a master-metered consumer, that receives supply in a master-metered installation via the electrical system owned by a master-metered consumer. 2.1.4.1.2
The landlord/MCST or HDB, in the case of HDB premises, must ensure that the total applied load requirement for service connections to the multimetered premises meet the total existing and future load requirements for all tenants. All tenants applying for any upgrading of load must do so through their master-metered consumer. In this regard, the master-metered consumer must approve the load of all tenants within the premises.
2.1.4.1.3
If the landlord’s existing approved load is insufficient to cater for the tenants’ load requirement, the landlord, as a master-metered consumer, must submit an application to SPSL for modification (upgrading) of service connection to the existing premises. In this case, the existing service cables are amalgamated with the new intake. Hence, there will not be separate direct connections to the tenants of such premises.
2.1.4.2
Premises In Private Housing, Industrial Estates, Commercial Developments Requiring Provision Of Low Voltage (LV) Distribution Network
2.1.4.2.1
For connection to premises where several parcels of land are to be sold or leased individually, one or more substations must be provided by the developer. Where the individual parcels of land are to be sold prior to development of these substations, details of the substation requirements and approved load must be included in the sales agreement by the future land parcel’s owner or lessee.
2.1.4.2.2
The developer must provide the development’s total load requirement and include the breakdown of the individual premises’ load requirement (as specified in the sales agreement) and the communal load requirement, if applicable.
2.1.4.2.3
In the case of landed housing estate development, the LEW must liaise with National Parks Board for the siting of overground distribution boxes on turfed areas. PowerGrid will provide and install the LV distribution network and service connection cables for the development.
2.1.4.3
Premises Involving Temporary Connection With Provision Of Substation
2.1.4.3.1
Special terms and conditions apply in such cases for temporary connection to construction worksites and other temporary premises. The term granted for temporary connection is usually 24 months.
2.1.4.3.2
Where there is a need for the provision of a temporary substation, the customer must provide the site and construct the structure of the substation according to the requirements of PowerGrid. ▲
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Application For Load Connection
2.1.4.3.3
There will be a need to install the necessary cables and equipment to facilitate the temporary connection to the distribution network. The customer pays outright costs for the cables and a monthly hiring charge for the use of the equipment (including the cost of insuring the equipment) during the term for temporary connection.
2.1.5
Provision Of Substation
2.1.5.1
When an application for load connection necessitates the provision of a substation (See Appendices 9 & 10), a site must be provided and a substation constructed by the customer at its own cost.
2.1.5.2
The customer is advised to site the substation at an inconspicuous location, away from the main entrance of the development and major public roads. The customer is also encouraged to harmonise, blend and integrate the substation with its development.
2.1.5.3
PowerGrid’s officers and vehicles will have full and unrestricted access to the substation.
2.1.6
Types Of Service Connection Cables The types of cables for service connection is shown in Appendix 36. In the event that the customer is required to supply and install the cables, the customer’s LEW has to seek consent from PowerGrid if the cables are different from the list shown in Appendix 36.
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2.2
TRANSMISSION CONNECTION
2.2.1
Consultation
2.2.1.1
A customer may choose to seek preliminary comments from PowerGrid via the connection consultation process before submitting a formal application. This practice is encouraged as incorporating PowerGrid’s requirements in a developer’s preliminary proposal would expedite the application process at a later stage.
2.2.1.2
To initiate the connection consultation process, the customer has to submit the Consultation Form (Appendix 2) through an LEW to PowerGrid.
Application For Load Connection
2.2.2
Application The following are steps in the application for service connection:
2.2.2.1
The customer submits the Application Form (Appendix 1) through an LEW to SPSL.
2.2.2.2
A connection proposal, duly endorsed by the PSO, is given to the customer. It outlines the connection scheme, connection voltage, connection equipment and facilities required of the customer and the estimated connection charges. PowerGrid endeavors to respond to the customer, through SPSL, within 60 business days and 100 business days for 66kV connections and 230kV connections respectively.
2.2.2.3
Where the application requires the provision of an EHV substation, the customer must adhere to the general requirements attached in Appendix 17.
2.2.2.4
Once the customer acknowledges acceptance of PowerGrid’s connection proposal, PowerGrid proceeds to execute the Consumer Connection Agreement through SPSL. The Agreement contains an offer letter, the standard terms and conditions associated with the connection and an estimation of the connection charges.
2.2.3
Lead-Time For Application Of Transmission Connection
2.2.3.1
The timely provision of electricity supply to a development involves the joint efforts of SPSL, PowerGrid, and the customer and their agents, such as the LEW. While SPSL and PowerGrid will make every effort to engineer and implement the connection scheme, it is at the same time essential for the new customers and their agents to co-operate via timely submission of applications and plans, timely acceptance of the terms and conditions of connection and compliance with the necessary PowerGrid or Transmission Code requirements.
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Application For Load Connection
2.2.3.2
As a guide for the customer and their agents, the normal lead-times for the events leading to the energisation of 66kV service connections are listed in the box below. The actual lead-time to energisation may vary for each connection, depending on the actual service cable length and the progress of intermediate events leading to completion of service connection works. Customers will be informed accordingly either at the point of application or at any time a review is required. For 230kV service connections, the customer will be informed of the lead-time only at the point of application.
NORMAL LEAD-TIME FOR ENERGISATION OF 66kV SERVICE CONNECTION
Events From day of execution of Consumer Connection Agreement to energisation of service connection
New 66kV Connection from PowerGrid’s Existing Substation
New 66kV Connection from New 66kV Substation Provided by Connection Applicant
21 months
26 months*
Note: * The customer is required to handover the substation 8 months prior to target date of energisation of service connection.
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Transmission Charges
3
Transmission Charges
3.1
CONSUMER CONNECTION AGREEMENT
3.1.1
All customers are required to enter into a Consumer Connection Agreement with PowerGrid and to pay Use of System (UOS) charges. Customers having a direct connection to the transmission system must also pay a service connection charge. For non-contestable customers, the Connection Agreement is part of the Supply Agreement.
3.1.2
The Consumer Connection Agreement for customers taking HV supply at 6.6kV/22kV or EHV supply at 66kV/230kV will, inter alia, state the Contracted Capacity, which is deemed to be the requirements for a period of five years. Customers cannot reduce their Contracted Capacity until the expiration of the 5-year period or additional 5-year period. Further, a customer who terminates the supply agreement during the 5-year period or additional 5year period will be required to pay PowerGrid through SPSL/Retailer, the Contracted Capacity Charge for the unexpired portion of the 5-year period.
3.1.3
UOS charges are payments for the use of the transmission services. The UOS charges are paid for electricity consumption at each metered intake supply point in accordance with the voltage at which a customer receives the electricity supply.
3.1.4
In the case of HV and EHV supply to multi-metered premises, the landlord has to enter into a Connection Agreement for the network capacity required for his own load only – i.e. supply for common services, etc.
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Transmission Charges
3.2
USE OF SYSTEM (UOS) CHARGES FOR NON-CONTESTABLE CUSTOMERS
3.2.1
UOS charges for non-contestable customers are included in the electricity tariffs offered by SPSL. The types of tariffs currently available are for low tension (LT: 400V/230V), high tension (HT: 22kV and 6.6kV) and extra high tension (EHT: 66kV).
3.2.3
Low Tension (LT) Supply LT customers pay charges based only on energy (kWh units) supplied to an installation. The supply is charged at a flat rate for each kWh delivered at each metered intake supply point.
3.2.4
High Tension (HT)/Extra High Tension (EHT) Supply HT and EHT customers pay charges calculated from tariffs based on the Contracted Capacity Charge, Usage Charge, Uncontracted Capacity Charge and Reactive Power Charge.
3.2.4.1
The Contracted Capacity Charge payable by customers to SPSL is based on kW Contracted Capacity. The Contracted Capacity Charge is calculated as follows: Contracted Capacity Charge = Customer’s Contracted Capacity x Contracted Capacity Rate
3.2.4.2
The Usage Charge payable by the customers to SPSL is based on kWh of electricity supplied. The Usage Charge is calculated as follows:
3.2.4.2.1
For Peak Period Usage Charge = kWh consumed during the Peak Period x Peak Period Rate
3.2.4.2.2
For Off-Peak Period Usage Charge = kWh consumed during the Off-Peak Period x Off-Peak Period Rate
3.2.4.3
The Uncontracted Capacity Charge, which is based on the customer’s excess kW demand, is payable if in any month the customer’s actual kW maximum demand exceeds its Contracted Capacity. The Uncontracted Capacity Charge is calculated based on the following: Uncontracted Capacity Charge = (kW maximum demand – Contracted Capacity) x Uncontracted Capacity Rate
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Transmission Charges
3.2.4.4
The Reactive Power Charge, which is based on the customer’s excess kVArh, is payable if in any month the customer’s kVArh consumption exceeds 62% of its kWh consumption. The Reactive Power Charge is calculated based on the following: Reactive Power Charge = (kVArh – 62% of kWh) x Reactive Power Rate
3.3
USE OF SYSTEM (UOS) CHARGES FOR CONTESTABLE CUSTOMERS Contestable customers pay UOS charges for transmission services at each metered intake supply point in accordance with the voltage at which the customers receive the electricity supply. UOS charges are subject to change and these changes will be published by PowerGrid from time to time.
3.3.1
Low Tension (LT) Supply LT supply is metered on energy (kWh units). LT supply for contestable customers attract UOS charges based only on energy supplied to an installation. The supply is charged at a flat rate for each kWh delivered at each metered intake supply point.
3.3.2
High Tension (HT), Extra High Tension (EHT) And Ultra High Tension (UHT: 230kV and above) Supply For HT, EHT and UHT supply, each metered intake supply point attracts its own UOS charges as follows: a) b) c) d) e)
a Contracted Capacity Charge, a Peak Period Charge, an Off-Peak Period Charge, a Reactive Power Charge, and (i) an Uncontracted Capacity Charge, and (ii) an Uncontracted Standby Capacity Charge (only for customers with embedded generation who opt to cap their demand drawn from the network).
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Transmission Charges
3.3.2.1
Contracted Capacity Charge
3.3.2.1.1
The Contracted Capacity Charge is a monthly charge for the Contracted Capacity at each metered intake supply point of a customer. The Contracted Capacity of a metered intake supply point is the total supply capacity in kW requested by the customer.
3.3.2.1.2
For a new supply, the Contracted Capacity is deemed to be the customer’s requirement for a binding period of 5 years. This period starts from the target date or the date PowerGrid’s plant and equipment, except for the service cable, are available to provide such Contracted Capacity, whichever is the later. For new HT, EHT and UHT supply, the minimum Contracted Capacity for each metered intake supply point shall be as follows: HT with 1 or 2 feeders HT with 3 or more feeders EHT UHT
1,700kW 12,750kW 25,500kW 85,000kW
For new supply, a request may be made for intermediate steps before the full Contracted Capacity is implemented during the first year of the 5-year binding period. The first step will be at least one quarter of the customer’s full Contracted Capacity at each metered intake supply point. 3.3.2.1.3
After the 5-year period, the Contracted Capacity at each metered intake supply point may be reduced subject to the following minimum values: HT with 1 or 2 feeders HT with 3 or more feeders EHT UHT
850kW 6,375kW 12,750kW 42,500kW
Any revision of the Contracted Capacity after the 5-year period will apply for a minimum binding period of 1 year.
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20
3.3.2.1.4
For a new development with landlord and tenants, the supply capacity required by the landlord himself must meet the minimum values set out in 3.3.2.1.2 and 3.3.2.1.3 above in order for the landlord to qualify for HT or EHT supply.
3.3.2.1.5
Upward revision of the Contracted Capacity may be allowed during the validity of the binding period of 5 years or 1 year of the Contracted Capacity. The revised Contracted Capacity in such cases apply for the remainder of the 5-year period or for a minimum period of 1 year, whichever is the greater, provided PowerGrid is not required to install new or additional equipment. Downward revision during a binding period will not be allowed.
Transmission Charges
3.3.2.1.6
A customer whose revised contracted capacity requires PowerGrid to install new or additional equipment, will be considered as receiving a new supply with a new 5-year binding period.
3.3.2.2
Peak Period Charge The Peak Period Charge payable is the monthly charge based on the energy (kWh units) supplied to an installation during the peak period – from 7.00am to 11.00pm – in that month.
3.3.2.3
Off-Peak Period Charge The Off-Peak Period Charge payable is the monthly charge based on the energy (kWh units) supplied to an installation during the off-peak period – from 11.00pm to 7.00am – in that month.
3.3.2.4
Reactive Power Charge The Reactive Power Charge is a monthly charge for the installation’s excess kVArh consumption. The excess kVArh is the difference by which the installation’s kVArh consumption drawn from the network in that month is greater than 62% of its kWh consumption drawn from the network in the same month.
3.3.2.5
Uncontracted Capacity Charge
3.3.2.5.1
The Uncontracted Capacity Charge applies to customers without embedded generation. It also applies to existing HT and EHT customers with embedded generation whose monthly maximum demand in kW is the maximum summated demand in kW in the month, determined by summating the kW demand from the network and the kW output from embedded generation.
3.3.2.5.2
The Uncontracted Capacity Charge is a monthly charge for the Uncontracted Capacity consumed. The Uncontracted Capacity is the capacity in kW by which the maximum demand in kW (measured by the half-hour integration meter) exceeds the Contracted Capacity at that metered intake supply point, and is chargeable for the month concerned.
3.3.2.5.3
The Uncontracted Capacity Charge is also applicable to existing HT and EHT customers with embedded generation who opt to cap their power demand in kW drawn from the network in the event that the maximum demand in kW (measured by the half-hour integration meter) exceeds the Contracted Capacity. The Uncontracted Capacity for these customers is limited to 20% of the Contracted Capacity.
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21
Transmission Charges
3.3.2.6
Uncontracted Standby Capacity Charge
3.3.2.6.1
The Uncontracted Standby Capacity Charge applies to existing customers with embedded generation who opt to cap their power demand in kW drawn from the network. This charge applies to such customers in the event that their demand in kW exceeds 120% of the Contracted Capacity at that metered intake supply point due to their failure to cap the kW demand drawn from the network.
3.3.2.6.2
The Uncontracted Standby Capacity Charge is a monthly charge for the Uncontracted Standby Capacity consumed. The Uncontracted Standby Capacity is the capacity in kW by which the demand in kW (measured by the power meter) exceeds 120% of the Contracted Capacity at that metered intake supply point for a duration of more than 10 seconds due to their failure to cap the kW demand drawn from the network, and is chargeable for the month concerned.
3.4
TEMPORARY SUPPLY Temporary supply is available only at LT and HT voltages for temporary civil engineering and building construction sites. The UOS charges applicable for the LT and HT temporary supply will be as in 3.2 and 3.3. For temporary supply at HT, the Contracted Capacity applies for a minimum binding period of 1 year. Upward revision of the Contracted Capacity may be allowed during the validity of the binding period of the Contracted Capacity. The revised Contracted Capacity in such cases apply for a minimum period of 1 year, provided PowerGrid is not required to install new or additional equipment. Downward revision during a binding period will not be allowed. A customer whose revised Contracted Capacity requires PowerGrid to install new or additional equipment is considered as receiving a new temporary supply.
3.5
SUPPLY FOR POWER STATIONS The UOS charge for transmission services provided to a power station which draws electricity supply through the generation connection is based only on energy (kWh) units. The UOS charge applies to the sum of the net kWh imported half-hourly into the power station through the generation connection and is based on the connection voltage. The UOS charge for transmission services provided to a power station which draws electricity supply through a separate service connection is the same as for a load and attracts a Contracted Capacity Charge based on the service connection voltage.
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Energisation And Turn-On Procedures
4
Energisation and Turn-On Procedures
The term “energise”, in the case of a customer’s installation that is directly connected to the transmission system, refers to the closing of a circuit breaker or other isolating device that is owned and controlled by PowerGrid. “Energisation”, “de-energisation” and “re-energisation” and all grammatical variations of the term shall be interpreted accordingly. Arrangements need to be made with SPSL for energisation of the service connection and turn-on of a customer’s electrical installation. This is taken care of by the LEW. The following are arrangements needed by type of premises: 4.1
NON-DOMESTIC PREMISES (LOAD REQUIREMENT NOT EXCEEDING 45kVA), AND DOMESTIC PREMISES WHERE ELECTRICAL INSTALLATIONS ARE PROVIDED AND PRE-INSPECTED OR PREVIOUSLY INSPECTED AND ENERGISED
4.1.1
This category includes all new HDB apartments and dwelling units in some private residential developments where electrical installations are provided and inspected in advance. It also includes non-domestic premises (supply capacity not exceeding 45kVA) and domestic premises where the existing electrical installations and service connections are intact and only the supply is required to be re-energised.
4.1.2
The customer has to open an account with SPSL for electricity service connection (See 4.9.2).
4.1.3
The customer is given an appointment date for turn-on of service connection. This appointment date is normally the 4th working day from the date the account is opened. For electrical safety reasons, the customer or his representative must be present at the premises for the turn-on of electricity service connection.
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23
Energisation And Turn-On Procedures
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24
4.2
PREMISES WITH DIRECT CONNECTION FROM POWERGRID’S TRANSMISSION SYSTEM
4.2.1
Domestic Premises (all load requirements)
4.2.1.1
The customer opens an account with SPSL, if an account has not already been opened (See 4.9.2).
4.2.1.2
Upon completion of the electrical installation and receipt of notification from PowerGrid on energisation/readiness of the service connection, the LEW books an appointment with SPSL for inspection and turn-on of the customer’s installation. This is done by submitting the Certificate of Compliance (COC) form (See 4.7.1).
4.2.1.3
The electrical installation is connected to PowerGrid’s transmission system on the scheduled turn-on date if the electrical installation is safe to receive electricity supply. The LEW must be present during inspection of the electrical installation by SPSL. For electrical safety reasons, the customer or his representative must also be present at the premises for the turn-on of electricity service connection. A ‘PASS’ Inspection Report is issued by SPSL on-site upon successful turn-on of the customer’s installation.
4.2.2
Non-Domestic Premises
4.2.2.1
Load Requirement Not Exceeding 45kVA
4.2.2.1.1
The customer opens an account with SPSL, if this has not already been done (See 4.9.2).
4.2.2.1.2
Upon completion of the electrical installation and receipt of notification from PowerGrid on energisation of the service connection, the LEW books an appointment with SPSL for inspection and turn-on of the electrical installation. This is done by submitting the COC form (See 4.7.1).
4.2.2.1.3
The electrical installation is connected to PowerGrid’s transmission system on the scheduled turn-on date if the electrical installation is safe to receive electricity supply. The LEW must be present during inspection of the electrical installation by SPSL. For electrical safety reasons, the customer or his representative must also be present at the premises for the turn-on of electricity service connection. A ‘PASS’ Inspection Report for the customer’s installation is issued by SPSL on-site upon successful turn-on.
4.2.2.2
Load Requirement Exceeding 45kVA
4.2.2.2.1
The customer submits an application for an account (See 4.9.2) and meter installation Form CS/6 (Appendix 22.1) to SPSL if this has not already been done, and applies for a licence from Energy Market Authority (EMA) to use or operate an electrical installation.
Energisation And Turn-On Procedures
4.2.2.2.2
Upon completion of the electrical installation and receipt of notification from PowerGrid on the readiness of service connection, the LEW must inspect and test the electrical installation before booking an appointment with SPSL for energisation of service connection by PowerGrid. This is done by submitting the COC form (See 4.7.1).
4.2.2.2.3
The LEW in charge of the design, installation and supervision of work has to arrange for the LEW in charge of the operation of the installation and the customer (or his representative) to be present during the energisation.
4.2.2.2.4
The electrical installation is connected to PowerGrid’s transmission system on the scheduled energisation date if the electrical installation is safe to receive electricity supply. The LEW must issue a Certificate of Readiness (COR) form (See 4.7.2) to PowerGrid at site, prior to energisation of the service connection.
4.2.2.2.5
Upon successful energisation of service connection to the customer’s installation from PowerGrid’s direct connection, all parties are to acknowledge on the Statement of Turn-On of Electricity (See 4.7.3).
4.3
BOOKING AN APPOINTMENT
4.3.1
Before booking an energisation and turn-on appointment, the LEW must ensure the following:
4.3.1.1
Metering requirements, where applicable, have been submitted and formal clearance has been given by PowerGrid’s Meter Section. All necessary meters have been installed.
4.3.1.2
The customer’s main incoming switchgear, protection system and earthing system have been successfully tested by an LEW. The HV metering panel has been provided, and testing of the metering current transformers/voltage transformers have been carried out and meters installed by Meter Section.
4.3.1.3
The service cables to the installation are ready to be energised.
4.3.1.4
An utilities account has been opened, a Connection Agreement has been signed, and a security deposit for UOS has been paid by the customer.
4.3.1.5
A licence to use or operate the electrical installation, where applicable, has been obtained from EMA.
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25
Energisation And Turn-On Procedures
4.3.1.6
For service connection at a system voltage level of 66kV and above, the final clearance for the EHV switching procedure must be obtained from the PSO prior to the confirmation of the first energisation date. Notes: (1) The EHV switching procedure must be jointly prepared and endorsed by the LEW, who is authorised to perform EHV switching (at customer’s installation), and PowerGrid’s Project Engineer. (2) For 66kV and above, the LEW must submit the COC form to PowerGrid’s Project Engineer.
4.3.2
Making An Appointment For Energisation Of Service Connection Direct From PowerGrid’s Transmission System
4.3.2.1
Load Requirement Not Exceeding 45kVA To make an appointment to turn-on electricity supply, the LEW or his representative submits the letter confirming the energisation of service connection and the COC, and pays an inspection fee to SPSL. This is done in person at Supply Application Section of SPSL at 111 Somerset Road, #01-10 Customer Services Centre.
4.3.2.2
Load Requirement Exceeding 45kVA Up To 22kV Supply Voltage An appointment for energisation of electricity service connection of load requirements greater than 45kVA and up to 22kV supply voltage can be made as follows: To make an appointment in person to energise the service connection, the LEW or his representative submits the letter confirming the readiness of service connection and the COC to SPSL’s Installation Section at 7th storey, St James District Office, Telok Blangah Road. Alternatively, the LEW can submit the Application for Appointment for Energisation of the Service Connection By Fax (Appendix 23) to Installation Section.
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4.3.2.3
A lead-time of 14 business days is required for the LEW to request for the energisation of PowerGrid’s service connection and turn-on of the customer’s installation.
4.3.2.4
Energisation of service connection involves several parties. An officer at SPSL’s Installation Section co-ordinates with PowerGrid for the energisation of the service connection for supply taken directly from PowerGrid’s transmission system.
Energisation And Turn-On Procedures
4.4
PREMISES WITH INDIRECT CONNECTION (I.E. PREMISES IN A MULTI-METERED DEVELOPMENT)
4.4.1
Load Requirement Not Exceeding 45kVA
4.4.1.1
The customer opens an account with SPSL (See 4.9.2) if this has not already been done.
4.4.1.2
The customer submits an Application for Inspection of Electrical Installation (Appendix 8) to SPSL through the LEW together with a Letter of Consent from the Landlord/Management Corporation or HDB (Appendices 3 and 4). The LEW can also book an appointment for inspection of the electrical installation at the time of submission of the application and, in the meantime, proceed to carry out the wiring/extension work. The procedure of booking an appointment is as in 4.3.2.1 above.
4.4.1.3
The LEW is responsible for arranging the energisation of the service connection with the relevant party responsible where connection is taken via the landlord’s switchboard – such as in HDB, JTC or other private multimetered buildings.
4.4.1.4
Service connection will be turned-on on the scheduled inspection date if the electrical installation is safe to receive electricity supply. The LEW must be present during the inspection. A ‘PASS’ Inspection Report for the customer installation will be issued on-site upon successful turn-on. The LEW must issue a Statement of Turn-On of Electricity and this must be acknowledged by the relevant parties.
4.4.2
Load Requirement Exceeding 45kVA (Multi-Metered Building Scheme)
4.4.2.1
When the premises is ready for installation of meters, the LEW/customer must submit an Application Form for Account Opening with Security Deposit payable, together with Form CS/7 (Appendix 22.2), and sign an agreement with SPSL.
4.4.2.2
The LEW shall proceed to liaise with PowerGrid’s Meter Section to have the meters installed.
4.4.2.3
SPSL then advises the LEW to proceed to apply to EMA for an EI Licence before the supply is turned on.
4.4.2.4
After the meters are installed, the LEW must submit a copy of the COC and confirm the activation date (which is the proposed turn-on date) with SPSL.
4.4.2.5
The LEW is responsible for arranging the energisation of the service connection with the relevant party where the connection is taken via the landlord’s switchboard – such as HDB, JTC or private multi-metered buildings. ▲
27
Energisation And Turn-On Procedures
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28
4.4.2.6
The landlord’s LEW will issue the Statement of Turn-On of Electricity upon successful turn-on.
4.4.2.7
Contestable customers must subscribe and install a dedicated telephone line per metering point to be used for the purpose of remote metering.
4.5
MODIFICATION TO AN EXISTING ELECTRICAL INSTALLATION
4.5.1
Modification work (e.g. extension, rewiring, shifting of meter) carried out to an existing electrical installation where a licence to use or operate is not required, must be inspected by SPSL before the new/modified portion of the wiring can be used.
4.5.2
The LEW must submit an application for inspection (Appendix 8) by SPSL for the modified electrical installation.
4.6
LICENCE TO USE OR OPERATE AN ELECTRICAL INSTALLATION
4.6.1
For service connection to non-domestic premises, residential buildings and condominiums with an approved load greater than 45kVA, and temporary connection for building construction and engineering work, irrespective of connection load, the customer must obtain a licence from EMA to use or operate the electrical installation.
4.6.2
It must be noted that PowerGrid cannot energise the service connection until such a licence is issued to the customer.
4.7
CERTIFICATES AND STATEMENTS FOR FIRST ENERGISATION OF SERVICE CONNECTION
4.7.1
Certificate Of Compliance (COC)
4.7.1.1
The LEW must ensure that the electrical installation complies with the requirements of the Electricity Regulations, Singapore Standards CP5, relevant technical requirements and all other applicable standards. This compliance must be made in the COC form (Appendix 37). The COC form must be submitted to PowerGrid through SPSL when requesting for an energisation appointment.
4.7.2
Certificate Of Readiness (COR)
4.7.2.1
The LEW has to certify the readiness of the installation. This certification must be made in the COR form (Appendix 21). The LEW must hand over the COR form to PowerGrid’s Project Officer on the actual date of first energisation.
Energisation And Turn-On Procedures
4.7.3
Statement Of Turn-On Of Electricity
4.7.3.1
Immediately after the successful first energisation of the service connection, PowerGrid will issue a Statement of Turn-On of Electricity (Appendix 38). All parties are to acknowledge by signing the form. The completed form will be given to all parties and a copy forwarded to SPSL.
4.8
LEAD-TIME FOR APPLICATION FOR SERVICE CONNECTION
4.8.1
The timely provision of electricity supply to a development involves the joint efforts of SPSL, PowerGrid, and the customer and his agents, such as the LEW. While SPSL and PowerGrid will make every effort to engineer and implement the connection scheme, it is at the same time essential for the new customers and their agents to play their part such as the early submission of applications and plans, the acceptance of terms and conditions of connection including making the necessary payments and the compliance of the necessary PowerGrid or Transmission Code requirements.
4.8.2
As a guide for the customer and his agents, the normal lead-times for the various events are listed on the following page. Depending on the progress and completion time of precedent events, the actual completion dates of events leading to the energisation of the service connection may need to be reviewed and adjusted.
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29
Energisation And Turn-On Procedures
NORMAL LEAD-TIME FOR ENERGISATION OF SERVICE CONNECTION UP TO 22kV Installation with Existing Service Connection not Exceeding 45kVA or
Non-domestic Installation with
New Connection
New Connection
Domestic Premises Pre-inspected Inspection
Existing Service Connection
from PowerGrid’s Low Voltage Mains
from New Substation
Installation or Reconnection
Required
Exceeding 45kVA
Submission of application to SPSL
NA
14 days*
4 weeks
3 months
6 months
Submission of substation
NA
NA
NA
NA
5 1/2 months
Acceptance of Agreement
4 days
14 days
14 days
7 weeks**
11 weeks*
Handover of substation
NA
NA
NA
NA
10 weeks*
with SPSL
4 days
14 days
14 days
14 days
11 weeks
Arrangements to inspect
NA
10 days
NA
NA
NA
NA
NA
10 days
10 days
10 days
NA
NA
14 days
14 days
14 days
plans to PowerGrid
to PowerGrid+ Opening of account
customer’s installation (not exceeding 45kVA) by SPSL Application to EMA for licence to use or operate an electrical installation Request for energisation of service connection
*
These are critical events. Failure to adhere to the schedule may result in delay in the turn-on of supply. For connection by underground cable, PowerGrid will have to seek road opening approval from the relevant authorities before cable work can commence. The approval process usually takes about 3 weeks. Depending on the length of cable to be installed, supply will normally be available 4 to 6 weeks from the date customer’s premises is ready to receive the service cable. Energisation of service connection will normally take place within 10 weeks of handing over of substation. This lead-time may vary from case to case, depending on the customer’s schedule.
**
+
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Energisation And Turn-On Procedures
4.9
NOTES TO BE READ IN CONJUNCTION WITH APPLICATION PROCEDURE
4.9.1
Licensed Electrical Worker
4.9.1.1
Under the Electricity Act, the design and installation of an electrical installation may be undertaken by the following categories of LEWs:
Electrical Workers Electrician Electrical Technician
Electrical Engineer
Supply Capacity of Installation Not exceeding 45kVA Design: Not exceeding 150kVA Install: Not exceeding 500kVA No limit
Voltage Not exceeding 1,000V Not exceeding 1,000V
No limit
4.9.1.2
The customer should appoint an LEW appropriate to the capacity and voltage of the proposed installation, and inform SPSL immediately of any change of LEW during the course of the project.
4.9.2
Opening An Account
4.9.2.1
Before supply to an installation can be turned-on, the customer must open an account with SPSL. An application to open an account for electricity supply can be made either personally, through the post or Internet. A sample of the Application(s) for the Supply of Water, Electricity and/or Gas and GIRO forms to be completed are shown in Appendix 6 and Appendix 7 respectively.
4.9.2.2
Application in person can be made at SPSL’s Customer Services Centre, Upper First Storey, 111 Somerset Road #01-10, Singapore Power Building; or at SPSL’s Application Counter at Woodlands Civic Centre #02-06, 900 South Woodlands Drive, Singapore 730900. Applications through the post should be addressed to: Manager (Customer Services Branch) SP Services Ltd P O Box 341 Orchard Post Office Singapore 912312
4.9.2.3
The following documents must be shown at the time of application in person:
4.9.2.3.1
Identity Card/Passport of owner/tenant/authorised signatory*
4.9.2.3.2
Copy of Business/Company Registration Certificate*
4.9.2.3.3
Documentary proof of occupation of premises, e.g. rent receipt or sales letter from HDB confirming the purchase of the premises ▲
31
Energisation And Turn-On Procedures
4.9.2.3.4
Bank account book to effect GIRO deduction from the account * applicable for account in company’s/organisation’s name
4.9.2.4
For applications submitted through the post, copies of the above-mentioned documents must be enclosed.
4.9.2.5
An initial deposit is payable on opening an account. Customers may call the Customer Enquiry Auto-Link (U-Link) at 1800-7380038 to enquire about the opening and closing of accounts.
4.9.2.6
For domestic premises, the deposits are as follows: TYPE OF PREMISES
HDB 1/2 rooms HDB 3/4/5 rooms HDB Executive/HUDC/Terrace Private Apts/Semi-Detached/Condo Bungalow/Penthouse/Townhouse
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32
DEPOSIT GIRO Non-GIRO Customers Customers S$ 40 S$ 60 S$ 70 S$ 100 S$ 100 S$ 150 S$ 150 S$ 250 S$ 250 S$ 400
4.9.2.7
The deposit for non-domestic premises varies according to the electricity load required, the estimated water consumption, the floor area and type of operations. For enquiry on the amount of deposit required, customers can call 1800-2356841.
4.9.3
Handover Of Completed Substation
4.9.3.1
The handover of substation to PowerGrid for installation of equipment is a key event, which determines the earliest date when supply can be made available.
4.9.3.2
One week prior to the intended handover of the substation, the LEW must submit a Request to Handover Substation form (Appendix 5) to Senior Manager (Customer/Distribution Projects), PowerGrid. Before this is done, the LEW must ensure that the customer/developer has accepted the terms and conditions of connection, including the payment of necessary charges.
4.9.3.3
It must be emphasised that PowerGrid will take over the substation only when it is completed in accordance with plans and specifications approved by PowerGrid and the relevant authority. It is particularly important that the access to the substation must be clear and passable for transportation of heavy equipment.
Energisation And Turn-On Procedures
4.9.3.4
Floor frames are needed for some types of switchgear. Prior to the final rendering of the switchroom floor, the LEW is to notify the project engineer-in-charge to make arrangements for the floor frame to be installed, if it is necessary.
4.9.3.5
Requirements on handover of a completed transmission substation are given in General Requirements for EHV Substation (Appendix 17).
4.9.4
Installation Of Current Transformer Operated Meters
4.9.4.1
For supply capacity exceeding 75kVA, current transformer operated meters are required. The LEW is required to provide the three metering current transformers and a pre-wired metering panel on the customer’s intake switchboard complete with Meter Section approved type test block, 6A 10kA MCB and pilot lamps and metering cables to the busbars.
4.9.4.2
On the day the LEW arranges with SPSL for a date for energisation of the service connection, he should also bring the letter of appointment for energisation of the service connection to Meter Section to arrange for the installation of meters. On the appointed day of meter installation, the LEW or his representative must be present to provide a 230V 13A single phase supply for testing of the meters.
4.9.5
Procedure For Application For Licence To Use Or Operate An Electrical Installation
4.9.5.1
General
4.9.5.1.1
Under the Electricity Act, electrical installations in non-domestic premises, residential buildings and condominiums with an approved load greater than 45kVA are required to be licensed. In addition, certain premises classified as engaging in dangerous trades, are also required to be licensed even though they may have approved electrical loads not exceeding 45kVA.
4.9.5.1.2
Application forms for electrical installation licences are available at Energy Market Authority, 111 Somerset Road, #11-06, Singapore Power Building, Singapore 238164, or via the EMA website at www.ema.gov.sg.
4.9.5.2
Conditions For The Issue Of The Licence
4.9.5.2.1
Conditions for the issue of the electrical installation licences are governed by EMA.
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33
Energisation And Turn-On Procedures
4.9.5.2.2
The minimum grade of LEW required to take charge of the electrical or supply installation is determined by the total approved load. The grades of Electrical Workers and their authorisation conferred under the respective EMA licences are: Grades of Electrical Workers Electrician Technician Engineer
Design 45kVA 150kVA No limit
Authorisation Maintain/Operate 45kVA 500kVA Subject to licence conditions
4.9.5.3
Submission Of EMA Forms
4.9.5.3.1
The relevant application forms are to be completed and submitted to EMA with the necessary licence fees through the LEW in charge of the electrical installation. This must be done no later than 2 weeks before the date of the turn-on of the electricity supply.
4.9.5.3.2
The validity of the licence is for a period of 12 calendar months.
4.9.6
Procedure For De-Energisation/Disconnection Of Service Cables
4.9.6.1
De-Energisation Of Service Cable For Maintenance Purpose
4.9.6.1.1
The LEW who needs to de-energise an existing service cable for the purpose of maintenance or upgrading of the customer’s installation must submit the ADRE form to PowerGrid 7 business days in advance (Appendix 19). For Contestable Customers, an advance notice of 14 business days is required.
4.9.6.1.2
The SDRE form (Appendix 20) must be used to ensure the service cable is safely isolated after de-energisation and fit to be energised before reenergisation. Both PowerGrid’s officer in-charge and the LEW must duly complete and sign Part I and Part II of the form after de-energisation and before re-energisation of the service cable respectively. For Contestable Customer, the LEW must duly complete and sign Part III of the SDRE form.
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34
4.9.6.2
Disconnection Of Service Cables Upon Closing Of Account
4.9.6.2.1
The customer must close the account with SPSL.
4.9.6.2.2
The customer must write to SPSL for disconnection of service cables and removal of electricity meters.
Customer’s Installation Requirements
5
Customer’s Installation Requirements
5.1
REQUIREMENTS FOR HV AND LV CONNECTION (22kV AND BELOW)
5.1.1
Short-Time Withstand Current Ratings Of Switchgear
5.1.1.1
For electrical installations taking electricity supply directly from PowerGrid’s network, the customer’s main supply incoming switchgear must comply with the following short-time withstand current ratings:
5.1.1.1.1
For supply at 22kV – 25kA for 3 sec
5.1.1.1.2
For supply at 6.6kV – 20kA for 3 sec
5.1.1.1.3
For supply at low voltage: a) Single-Phase 230V – 6kA for supply capacity up to 15kVA – 9kA for supply capacity more than 15kVA and up to 23kVA b) – – –
3-Phase 400V 9kA for supply capacity up to 75kVA 25kA, 3 sec for supply capacity more than 75kVA and up to 180 kVA 36kA, 3 sec for supply capacity more than 180kVA
Note: The 3-second duration is not applicable to switchgear incorporating direct acting tripping devices. 5.1.1.2
For electrical installations taking electricity supply from the landlord’s or management corporation’s electrical installations, the LEW in-charge must ensure that the customer’s main supply incoming switchgear is capable of withstanding the prospective short-circuit current at the connection point.
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35
Customer’s Installation Requirements
5.1.2
Protection Requirements
5.1.2.1
Typical schemes and the protection requirements for a customer’s HV and LV main incoming switchgear taking electricity supplies from PowerGrid’s system are shown in Appendix 18. It must comply in general to conditions as set out in the Transmission Code, Section 6.3 and Appendix F3.
5.1.2.2
For electrical installations taking electricity supply from the landlord’s or management corporation’s electrical installations, advice on protection requirements must be sought from the LEW responsible for the respective licensed electrical installation.
5.1.2.3
Protection Requirement For 22kV And 6.6kV Customer Connection The main protection for the 22kV and 6.6kV customer connection must be pilot wire differential protection. The current transformers of ratio 500/5 must be of Class X and the CT secondary star-point must be towards the protected line. The standard overcurrent/earth fault setting for the incomer is shown in Appendix 18. The LEW of the customer installation is responsible for:
5.1.2.3.1
proper specification, setting/commissioning of the protection system at the customer incomers, and
5.1.2.3.2
ensuring that the 22kV circuits within the customer installation are equipped with unit protection for fast fault clearance, inclusive of fault at cable terminations.
5.1.2.4
Protection Requirement For LV Supply Connection The customer's incoming circuit breaker shall be set according to the approved load. For approved load exceeding 300A, external overcurrent relays of IDMTL or DTL characteristics and earth fault protection (DTL) must be provided at the incoming switchgear. The current transformer must be of Class 5P10, 15 VA or better. Details are shown in Appendix 18.
5.1.2.5
Every low voltage electrical installation of supply capacity exceeding 75 kVA must be provided with short-circuit protection in the form of direct acting trip element at the incoming switchgear as follows: Approved Load Above 1500A 400A < Approved Load < 1,500A 260A < Approved Load < 400A 200A < Approved Load < 260A 200A and below
Direct Acting Trip Setting Up to 4,500A Up to 3,200A Up to 2,400A Up to 2,000A Up to 1,200A
Alternatively, a backup HRC fuse may be used in place of direct acting trip. ▲
36
Customer’s Installation Requirements
5.2
REQUIREMENTS FOR EHV CONNECTION (230kV AND 66kV)
5.2.1
Short-Time Withstand Current Ratings Of Switchgear For electrical installations taking electricity supply directly from PowerGrid’s network, the customer’s main supply incoming switchgear must comply with the following short-time withstand current ratings:
5.2.1.1
For 230kV switchgear – 63kA (1 sec)
5.2.1.2
For 66kV switchgear – 40kA (3 sec)
5.2.2
Protection Requirement For 66kV And 230kV Customer Connection
5.2.2.1
General
5.2.2.1.1
The protection system for the connections has to comply in general to the conditions as set out in the Transmission Code.
5.2.2.1.2
All circuits connected to PowerGrid’s transmission network, inclusive of busbars for 230kV and above, must be provided with unit protection for fast fault clearance.
5.2.2.1.3
Engineering details and protection settings will be discussed with the customer during the project implementation.
5.2.2.1.4
The relays used for a unit protection scheme, and the characteristics of its associated current transformers should be matched. For reason of obsolescence or availability, the type of protection relays and the protection schemes is subject to review and confirmation during the consultation period.
5.2.2.1.5
Wherever applicable, signalling equipment is to be provided for teleprotection function and for end-to-end transfer of intertrip and interlock signals.
5.2.2.1.6
Generally, the star-point of the current transformer secondary circuit must be towards the protected object/zone.
5.2.2.1.7
Generally, the location of the current transformers for the circuit and that of the installation’s busbar protection system for 230kV and above must be overlapped across the circuit breaker to eliminate protection blind zone.
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37
Customer’s Installation Requirements
5.2.2.1.8
Current transformers supplied for unit protection must be rated in accordance with IEC 60044 Part 1 & 6, BS 3938. They must be adequately dimensioned and of an accuracy class meeting the specified relay’s requirement. The characteristic of the current transformers installed at both ends of the connected circuit must be closely matched with each other to ensure stability.
5.2.2.2
The settings for the backup protection for the 66kV customer incomer must generally be as follows:
RECOMMENDED RELAY SETTING FOR 66kV CUSTOMER INCOMER Protection Relay Overcurrent Protection Feeder Circuit Feeder Transformer Circuit (for 75MVA transformer) Earth Fault Protection Feeder Circuit Feeder Transformer Circuit (for 75MVA transformer)
CT Ratio (1,000/5) ( 800/5) (1,000/5) ( 800/5) (1,000/5) ( 800/5) N/A
General Setting Setting 150% 0.15 200% 0.15 100% 0.20 125% 0.16
Hi-Set: 27A Hi-Set: 34A
10% 0.10 15% 0.10
Notes: – The co-ordinated setting for the backup protection is applicable to the standard protection scheme proposed for a feeder or feeder-transformer type customer connection and is applicable to radial feed connection only (Refer to Appendix 18). – The overcurrent and earth fault setting are subject to periodic review by PowerGrid.
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38
Metering Requirements
6
Metering Requirements
6.1
GENERAL
6.1.1
All metering requirements must comply with EMA’s Metering Code. PowerGrid will determine the location where the supply line terminates in the premises, based on ease of accessibility to SPSL and PowerGrid personnel.
6.1.2
The developer or customer bears the cost of providing and maintaining the meter boards, miniature circuit breakers (MCBs), isolators and wiring for installation of meters. The meters are supplied and maintained by PowerGrid.
6.1.3
Meters can be mounted on any of the following types of meter boards:
6.1.3.1
Teak board or any hardwood board chemically treated against attacks by termites. Plywood should not be used. The meter board must be at least 20mm thick and rigidly fixed with a minimum of 4 fixing screws.
6.1.3.2
Metal panel with nylon inserts accurately positioned to accommodate the meter.
6.1.3.3
Glass reinforced polyester base fitted with nylon inserts accurately positioned to accommodate the meter. If item 6.1.3.2 or 6.1.3.3 is provided, PowerGrid’s Meter Section has to be consulted on the locations of the nylon inserts.
6.1.4
The LEW must ensure that all metering requirements are complied with, and submit, at the planning stage, all relevant drawings on meter locations, meter board size, meter rooms, meter compartments/riser ducts/cupboard, etc to Meter Section for approval. Sample units of each approved type of meter compartment/riser duct/cupboard and meter board must be provided for final inspection and approval by Meter Section before meters are installed.
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39
Metering Requirements
6.1.5
If the doors of centralised meter rooms, meter gate posts, meter compartments/ riser ducts/cupboards, etc are to be locked, they must be fitted with locksets which can be opened with one of the following master keys:
6.1.5.1
Abloy master key code reference MK 911047
6.1.5.2
Chubb (Union) master key code reference G1HBG
6.1.5.3
Yale master key code reference MK48 The doors of meter rooms/compartments must be able to be opened from the inside without the need to use a key or other devices/tools.
6.1.6
All access doors to meter rooms/compartments/riser ducts/cupboards, etc must have a clear access opening of at least 600mm (width). The doors must be fitted with door knobs or handles.
6.1.7
Security access systems installed in any premises must not impede access by SPSL and PowerGrid personnel.
6.2
LOCATION OF METER
6.2.1
General
6.2.1.1
The service board accommodating PowerGrid’s service MCBs and meters must be located near the termination of the service line. The meter/service position must be easily accessible at all times to SPSL and PowerGrid personnel for maintenance and reading of meters.
6.2.1.2
Meters must be installed in a safe location where they will not be damaged or be a cause of danger to personnel (viz, in a clean and dry location, not exposed to weather, mechanical damage, vibrations, extremes of temperature or dampness).
6.2.1.3
The height of the meter on the meter board must be between 1.0m and 1.8m above ground level, and the depth of the compartment for installation of meters must be between 200mm and 300mm. It is advisable that the service board is housed in an approved box of noncombustible high-impact material to give added protection to the metering equipment and enhance safety.
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40
Metering Requirements
6.2.2
Grouping Of Meters Meters must be installed outside each tenant unit for ease of meter reading, maintenance, etc. Where this is not possible for practical reasons, meters may be grouped together in easily accessible centralised meter rooms or meter compartments/riser ducts/cupboards in multi-metered premises (e.g. residential, office, shopping or industrial high-rise building/complex).
6.2.3
Meters In Meter Compartments/Riser Ducts/Cupboards
6.2.3.1
Meters are to be grouped on the same floor as the tenant units.
6.2.3.2
There may be more than one group metering location on each floor.
6.2.3.3
There must be adequate lighting in the group meter location to facilitate meter installation/maintenance and meter reading.
6.2.3.4
Meter boards in meter compartments/riser ducts/cupboards must be such that meters can be mounted facing the doors.
6.2.3.5
All meter compartments/riser ducts/cupboards where meters are installed are to be clearly and permanently labelled. Tenant unit numbers on permanent labels must be fixed adjacent to their respective meters.
6.2.3.6
Meter compartments/riser ducts/cupboards housing the meters must have clear glass windows provided on the doors, if these are locked, for ease of meter reading. The window for each meter must not be less than 200mm (W) x 300mm (H) x 6mm (thickness) and must be correctly positioned in front of where the meter is to be installed. Plastic windows and UV resistant polycarbonates are not acceptable. Full glass doors are not acceptable.
6.2.4
Meters In Centralised Meter Rooms
6.2.4.1
The height of the meter board or panel must be such that meters can be mounted with the highest row not exceeding 1.8m above floor level and the lowest row not less than 1m above floor level.
6.2.4.2
There must be standing space of at least 700mm in front of the meter panel. However, if the meters are mounted on a free-standing panel, a clearance of 700mm all round the panel is required.
6.2.4.3
The meter board or panel must be rigidly and vertically mounted. The doors of the panel must be hinged.
6.2.4.4
The meter room must not be used as a storeroom.
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41
Metering Requirements
6.2.5
Meters Installed In Landed Properties
6.2.5.1
The meters and service cables must be installed in a weatherproof compartment located at the gate pillar or perimeter wall. For supply capacity up to 100A 3-phase, the technical requirements for this compartment are as given in Appendix 24. For supply capacity greater than 100A 3-phase where a CT-operated meter will be installed, the LEW has to submit the technical requirements to Meter Section for approval.
6.2.5.2
If there is no gate pillar or fencing around the perimeter of the landed properties, meters must be installed inside a weatherproof meter box/ compartment and easily accessible to SPSL and PowerGrid personnel. Meters must not be installed inside the house.
6.3
METER/SERVICE BOARD SPECIFICATIONS (SINGLE-PHASE AND 3-PHASE SERVICES, NOT EXCEEDING 100A PER PHASE) The meter/service board for PowerGrid’s service MCBs and meters must be as specified in Section 6.1.3 and in accordance with the drawings in Appendices 25, 26 and 27.
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42
6.4
WIRING, LAYOUT OF METERS, MCBS, ETC IN CENTRALISED METER ROOMS, METER COMPARTMENTS/RISER DUCTS/CUPBOARDS
6.4.1
All wiring leading in and out of the group meter location must comply with SS CP5. The landlord’s wiring must be segregated from the tenant’s wiring.
6.4.2
Meters are to be mounted together with their associated service MCBs/neutral connectors such that each meter can be visually identified with its associated service MCBs. Each meter position must be clearly labelled according to the tenant unit number. There should be a space of 70mm between vertically mounted meters.
6.4.3
Meters are to be mounted in neat vertical columns and/or horizontal rows.
6.4.4
Service MCBs must be sealable. MCBs must be clearly labelled according to the tenant units served. The labelling must also correspond to the labels used for the meters.
6.4.5
All wiring on the meter boards from service MCBs/neutral connectors to the meters and from the meters to the customer’s main switches must be neatly run on the surface – horizontally and/or vertically.
Metering Requirements
6.5
SUBMISSION OF LAYOUT PLANS The layout of the meter rooms, meter compartments/riser ducts/cupboards together with the meter board drawings and plans of the units served, must be submitted at the planning stage by the LEW for approval by Meter Section.
6.6
METERS FOR 3-PHASE LOW VOLTAGE CONNECTION (EXCEEDING 100A PER PHASE)
6.6.1
Meters for connections exceeding 100A per phase are operated from metering current transformers and are to be fixed on a pre-wired metering panel on the customer’s main switchboard. However, where the length of the connecting leads are not excessive, the pre-wired metering panel may, with the prior approval of Meter Section, be wall-mounted away from the main switchboard or in a separate meter room. The pre-wired metering panel with Meter Section approved type test block, 6A (10kA) MCB, pilot lights and metering cables to the busbars and the three metering current transformers, must be provided by the customer. Drawings of the meter panel can be obtained from Meter Section at St James District Office, Telok Blangah Road.
6.6.2
Meter Panel Compartment Specifications
6.6.2.1
Meter panels must be of mild steel of at least 1.6mm thickness or other materials subject to approval by Meter Section.
6.6.2.2
The panels must be detachable and of a size given in Appendix 28.
6.6.2.3
The compartments must have a minimum depth of 100mm between cover and base.
6.6.2.4
There must be openings with appropriate bushing for the meter wires.
6.6.2.5
The cover must have at least 3 hinges and be able to swing and open out at least 90o.
6.6.2.6
Facilities for sealing must be provided. Methods of sealing are illustrated in the drawings in Appendix 29.
6.6.3
Meter Installation Requirements
6.6.3.1
The switchboard must be complete and securely mounted in its final position before meters can be installed.
6.6.3.2
The top of the meter panel must not exceed 2.0m from the ground.
6.6.3.3
A 50mm x 50mm trunking of metal or other approved material between the switchboard and the meter panel must be provided to house the meter cables if the latter is installed away from the customer’s main switchboard. ▲
43
Metering Requirements
6.6.3.4
A 6.0mm tap-hole plus screw/washer on each busbar must be provided to facilitate connection of the voltage cables to the meter voltage coils.
6.6.3.5
If the meter panel is away from the customer’s main switchboard, sealable 30A HRC fuse for each phase and a sealable 3-pole ganged MCB of 6A 10kA rating must be provided on the front of the switchboard panel near the metering CT enclosure for the protection of the meter voltage wiring. The MCB must be appropriately labelled.
6.6.3.6
Mounting of metering current transformers must be as follows: – Current transformers must be mounted on jumpers for easy installation. – Bakelite clamps must be provided to secure the meter current transformers in position. – Adequate insulation between the metering current transformers and the busbar must be provided. – The metering current transformers and meter voltage tap off points must be installed after the incoming connection main protection current transformers.
6.6.3.7
Enclosure A rigid enclosure of mild steel plate of thickness not less than 1.6mm must be provided solely for housing the metering current transformers and voltage tap off points. The enclosures must have facilities for sealing. A typical construction of the enclosure is shown in Appendix 30.
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44
6.7
HIGH VOLTAGE/EXTRA HIGH VOLTAGE METERING
6.7.1
General Requirements
6.7.1.1
The customer is required to provide, install and maintain, at his own expense, current transformers, voltage transformers, a pre-wired metering panel with test blocks, MCBs, pilot lamps and accessories, at his receiving HV switchboard. These must meet PowerGrid’s requirements. Drawings of the metering panel can be obtained from Meter Section at St James District Office, Telok Blangah Road.
6.7.1.2
All metering current and voltage transformers must be used solely for PowerGrid’s revenue metering equipment. No other apparatus of the customer is permitted to be connected to such metering current and voltage transformers. However, a voltmeter may be allowed to be connected via a 100mA fuse (sealable) subject to approval by Meter Section.
Metering Requirements
6.7.1.3
The customer must also provide a metering kiosk to be located close to where the metering current and voltage transformers are installed, such that the route length of the cables from the current and voltage transformers to the metering kiosk does not exceed 10m. Where this cannot be complied with because of site constraints, the LEW must consult Meter Section concerning the type and size of cables to be provided and installed by the customer.
6.7.1.4
The requirements for the kiosk are given in Appendices 31 and 32. The access to the metering kiosk must be from outside the HV switchroom and fitted with any one of PowerGrid’s approved master lock series as specified in Section 6.1.5.
6.7.1.5
The customer must provide an appropriate metering panel of a size given in Appendix 33 and install a 50mm x 50mm trunking of metal or other approved material between the customer’s HV switchboard and the metering panel together with the required type and size of cables.
6.7.1.6
Facilities for sealing connections of all metering wire termination at the customer’s HV switchboard must be provided.
6.7.1.7
A schematic and wiring diagram of the customer’s switchboard must be supplied to facilitate installation of the meters.
6.7.2
Specifications For Metering Current Transformers
6.7.2.1
The customer will provide two metering current transformers of 30VA burden for 66kV connection or 15VA burden for connection at 6.6kV or 22kV. These must be of accuracy class 0.5 complying with SS 318 or IEC 60044-1.
6.7.2.2
The current transformers are to be installed on the red and blue phases at the cable end for each of his receiving switchboard. The current transformer ratio will be determined by PowerGrid based on the customer’s load requirement. For connection at 230kV, the LEW will liaise with Meter Section on metering requirements.
6.7.2.3
The rated short-time current rating must not be less than 63kA 1 second, 40kA 3 seconds, 25kA 3 seconds or 20kA 3 seconds for connection at 230kV, 66kV, 22kV or 6.6kV respectively.
6.7.3
Specifications For Voltage Transformers
6.7.3.1
For each of the customer’s receiving switchboard, one of the following voltage transformers must be provided:
6.7.3.1.1
One unit 3-phase 66kV/110V, 22kV/110V or 6.6kV/110V voltage transformer of 100VA burden per phase, connected star-star with the yellow phase terminal of the secondary winding earthed, or ▲
45
Metering Requirements
6.7.3.1.2
Three units single-phase, 66kV 110V or 22kV 110V or 6.6kV 110V √3 √3 √3 √3 √3 √3 Voltage transformers of 100VA burden per phase, connected star-star with the yellow phase terminal of the secondary winding earthed, or
6.7.3.1.3
Two units single-phase 66kV/110V, or 22kV/110V or 6.6kV/110V voltage transformers of 180VA burden per phase, ‘V’ connected with the yellow phase terminal of the secondary winding earthed.
6.7.3.1.4
Voltage transformers must be of accuracy class 1.0 complying with BS3941 or IEC 60186.
6.7.3.1.5
The secondary wiring of the voltage transformer must terminate in a sealable MCB incorporated in the switchgear panel. The MCB must be rated at 6A, 110V, 50Hz with breaking capacity not less than 10kA and the terminals of the MCB must be able to accept cables of cross section up to 6mm2.
6.7.3.1.6
The voltage transformers must be fused and adequate stock of spare highvoltage fuses must be kept by the customer.
6.7.3.2
All metering current transformers and voltage transformers together with their manufacturers’ test certificates must be submitted for testing and approved by Meter Section at least 2 weeks before connection is required. Voltage transformers at 66kV and 230kV are exempted from testing and only the manufacturer’s test certificates have to be submitted.
6.8
MASTER AND SUB-METERING SCHEME All multi-metered premises will be metered under master- and sub-metering arrangement. Each individual unit within the premises must be metered individually under their respective Sub-meter whereas the landlord or the owner of the premises will be metered under the Master-meter. The landlord or owner will pay the amount of electricity representing the difference between the amount of electricity consumed and registered by the Mastermeter and the aggregate of the amount of electricity consumed by the occupants of the individual units within the premises.
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46
6.9
METERING REQUIREMENTS
6.9.1
Low Voltage Customer
6.9.1.1
Single Customer – More Than 75kVA
6.9.1.1.1
The customer will provide three metering current transformers (CTs) of 5VA burden and accuracy class 0.5 complying with SS 318 or IEC 60044-1 and the pre-wired metering panels on the customer’s intake switchboard. The pre-wired
Metering Requirements
metering panel must be fitted with PowerGrid approved type test block, MCB and pilot lights and connected with metering cables to the CTs and busbars. The CTs together with their manufacturer’s test certificates must be submitted for testing and approval at least 2 weeks before connection is required. 6.9.1.1.2
A request for appointment to fix meters should be made only after the LEW has arranged with SPSL for a date to energise the service connection.
6.9.1.1.3
Meter Section will arrange to install the meters upon production of the energisation appointment letter issued by SPSL and requires at least 4 business days before the energisation of service connection date.
6.9.1.2
Multi-Metered Buildings
6.9.1.2.1
Submission of floor plans of building showing the locations of metering kiosks, meter room, meter compartments/riser ducts/cupboards.
6.9.1.2.2
Submission of dimensioned metering layout showing the plan, front and side elevations of the meter boards/rooms/compartments/riser ducts/ cupboards, etc.
6.9.1.2.3
Arrangements for sample units of each approved type of meter compartment/ riser duct/cupboard and meter board to be inspected and approved by Meter Section before meters are installed.
6.9.1.3
Landed Housing Development
6.9.1.3.1
Submission of site plans of building showing the locations of meter compartments at gate pillars.
6.9.1.3.2
Submission of dimensioned metering layout showing the plan, front and side elevations of the meter compartments in the gate pillars.
6.9.1.3.3
Arrangement for sample units of each approved type of meter compartment and meter board to be inspected and approved by Meter Section before meters are installed.
6.9.2
High Voltage/Extra High Voltage Customer
6.9.2.1
The revenue metering equipment will be installed at the customers’ end of the service connection. The customer will provide a suitable metering kiosk at his intake station, and metering CTs and VTs for each of his receiving switchboard. The metering CTs ratio will be based on declared demand as shown in 6.9.2.6.
6.9.2.2
The metering CTs and VTs are to be used solely for revenue metering purposes. The CTs and VTs up to 22kV supply are to be sent together with the manufacturer’s test certificates to Meter Section for testing and approval at ▲
47
Metering Requirements
least 2 weeks before supply is required. For supply at 230kV, the LEW has to liaise with Meter Section on metering requirements. 6.9.2.3
The VTs, after re-installation onto customer’s switchgear, have to be tested and phased out, and a test report as per Appendix 34 submitted to Meter Section for approval before installation of meters.
6.9.2.4
The customer will provide and maintain, at its own cost, a fixed telephone line to the metering kiosk to be used exclusively for the purpose of remote meter reading. This telephone line must be terminated in a standard telephone socket at the metering kiosk. Provision of this telephone line must be made before installation of meters.
6.9.2.5
If the customer is unable to provide the fixed telephone line due to site constraint, a GSM line can be considered subject to approval by Meter Section.
6.9.2.6
Based on the contracted capacity stated in the application form, the customer is required to provide the correct metering CTs as follows:
22kV Service Connection
66kV Service Connection
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48
Contracted Capacity MW 0.0 – 0.8 0.81 – 1.7 1.71 – 2.5 2.51 – 3.2 3.21 – 5.0 5.01 – 6.6 6.51 – 10.0 0.0 – 5.0 5.01 – 10.0 10.01 – 20.0 20.01 – 30.0 30.01 – 40.0 40.01 – 80.0
CT Ratio 50/25/5 100/50/5 150/75/5 200/100/5 300/150/5 400/200/5 500/300/5 100/50/5 200/100/5 400/200/5 500/300/5 800/400/5 1,000/500/5
6.10
CONTESTABLE CUSTOMERS
6.10.1
Eligibility The eligibility of contestable customers are determined by EMA.
6.10.2
Additional Requirements For Contestable Customers A contestable customer must provide and maintain at its own cost a fixed telephone line to be used exclusively for the purpose of remote meter reading. The LEW must liaise with Meter Section for the location and termination of this telephone line.
Appendices
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49
■ Appendix 1 APPLICATION FORM FOR CONNECTION TO POWERGRID TRANSMISSION SYSTEM
For official use only Application Number. : Date Received :
To : SP Services Ltd 111 Somerset Road #06-05 Singapore Power Building Singapore 238164 PART 1
APPLICANT’S DETAILS
Sub-metered consumers (tenants) are not eligible for this application. All tenants in multi-metered premises are required to obtain supply from their landlord/MCST or HDB for HDB premises. I request you to provide/upgrade the load connection service to my premises as given in Part II by my Licensed Electrical Worker undertaking the project
Name of Company/Applicant*: ________________________________________________ ROC/NRIC No: ________________ Name of Authorised Person & Designation* ___________________________________________________________________ Forwarding Address : ________________________________________________
Postal Code : Singapore______________
Tel : _________________ Fax : __________________ Mobile Phone : ____________________ Pager ________________ Email : _______________________ Signature of Applicant : _______________________________ Date : _______________
PART 2
INSTALLATION DETAILS – (To be completed by LEW)
Project Description : ________________________________________________________________________________________ Site Address : ___________________________________________________
Postal Code : Singapore ________________
Utility Account No (existing) : ______________________________ Existing Approved Load : _____________________ kVA/kW* Any previous Consultation?
Yes / No*
If Yes, please provide Consultation No : __________________
TYPE OF CONNECTION (Please tick appropriate box)
New Connection
Change of intake connection point
Upgrading the existing service cable
Temporary Connection
TYPE OF DEVELOPMENT (Please tick appropriate box)
Industrial
Others (Please specify) : _______________________________________________________
Commercial
Residential
Type of Business Activity (Brief Description) : __________________________________________
Voltage Sensitive? Yes / No *
LOAD REQUIREMENT (One intake connection point per premises) Total load requirement (to include existing load, if any)
30A/60A/100A* 230V single-phase
22kV (min 1,700kW for 2 HV services, min 12,750 kW for 4 HV services)
30A/60A/100A* 400V three-phase
__________ kVA at 400V three-phase 66kV/230kV* (min 25.5MW for 66kV,min 85MW for 230kV)
Contracted Capacity of _____________________ kW at ________________________ kV via ___________ service cable(s). Initial Contracted Capacity of ________________kW (shall not be less than ¼ of the Contracted Capacity) for ______ months (not exceeding 12 months) Total Load Requirement: ______________________________ kW (for multi-metered premises only) For multi-tenanted installation with the exception of HDB residential installation, the metering scheme shall be designed as Master/Sub-metering scheme.
Target date of Energisation : ________/_________/__________ Estimated ultimate load _____________________ kVA/kW*
► 50
O TO BE COMPLETED FOR INSTALLATION EXCEEDING 45kVA Total Land Area : ____________________________ m2
Gross Floor Area : _______________________________ m2
PLANS AND DETAILS (Mandatory)
1 copy of Architect’s site and location plan 1 copy of plan showing proposed customer’s intake connection point. Details of the type, floor area & designed load of individual premises for multi-metered premises
PART 3
LEW DETAILS
I confirm that the above information is correct and agree to advise SP Services should there be subsequent changes. Name of Authorised LEW : __________________________________
Licence Number:__________________________________
Registered Forwarding Address :________________________________________________________________________________ _____________________________________________________ Postal Code : Singapore ________________________________ Tel : _____________________ Fax : __________________ Mobile Phone ______________________ Pager __________________ Email : ____________________________________________________________________________________________________
Signature of Authorised LEW ______________________________________________________ Date _______________________ * Delete where not applicable
► 51
Appendix 2 CONSULTATION FORM FOR CONNECTION TO POWERGRID TRANSMISSION SYSTEM
For official use only Consultation Number. : Date Received :
To : PowerGrid Ltd 111 Somerset Road #08-05 Singapore Power Building Singapore 238164 CONSULTATION DETAILS Sub-metered consumers (tenants) are not eligible for this application. All tenants in multi-metered premises are required to obtain supply from their landlord/MCST or HDB for HDB premises. Reference to the consultation, I hereby enclose one copy of site & location plans including proposed customer’s intake connection point Drawing No. ____________________________________________________________ for your advice on connection requirements.
SITE DETAILS Connection Applicant/Developer* : _____________________________________________________________________________ Project Description :
_____________________________________________________________________________
Site Location – Lot & Mk No :
_____________________________________________________________________________
Street Name : __________________________________________________________ Blk/Unit No :_______________________
LOAD REQUIREMENT (One intake connection point per premises)
New Connection
Change of intake connection point
Upgrading the existing service cable
Temporary Connection
Other Services (Please specify):________________________________________
Type of Premises : Industrial/Commercial/Residential/Others*_________________________Gross Floor Area(m2): _____________ Type of Business Activity (for non-residential premise only) : _______________________________
Voltage Sensitive? Yes / No *
Existing Utility A/C No.(if any) : ________________________________ Existing Approved Load (kVA) : ________________________________ at 230V/400V/22kV/66kV/230kV* Load Requirement (kVA) : ____________________________________ at 230V/400V/22kV/66kV/230kV* Target date of Energisation :__________/___________/__________ Previous consultation No. (if any) : _________________ Additional information : ______________________________________________________________________________________ ______________________________________________________________________________________
LEW DETAILS I confirm that the above information is correct and agree to advise PowerGrid should there be subsequent changes. Name of Authorised LEW : _____________________________________
Licence Number:_______________________________
Company Forwarding Address :________________________________________________________________________________ ___________________________________________________________ Postal Code : Singapore __________________________ Tel : ______________________ Fax : __________________ Mobile Phone : _____________________ Pager : _______________ Email : ___________________________________________________________________________________________________
Signature of Authorised LEW ______________________________________________________ Date ______________________ * Delete where not applicable
f 52
■ Appendix 3 Form CS/3 Letter of Consent from the Landlord/Management Corporation To:
SP Services Ltd 111 Somerset Road #06-05 Singapore Power Building Singapore 238164
ELECTRICITY SUPPLY TO: ______________________________________________________________________________ (Full Address of the Customer) FOR:___________________________________________________________________________________________________ (Name of Customer) TOTAL LOAD ALLOWED FOR: __________________________________ AT _______________________________ VOLTS ________________________________________________________________________________________________________ PART I 1.
I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex, and the total approved load to the entire building/complex will not be exceeded.
2.
I have no objection for the abovementioned load to be connected to the rising/horizontal mains system/main switchboard of the building/complex.
3.
The Electrical Installation Licence No. of the building/complex is ______________________.
4.
The electrical installation of the building/complex from which this load is to be connected is Unmetered (i.e. without Master Account) Metered under Master Account No. __________________________________.
5.
I will check to ensure that the abovementioned installation is compatible with the electrical installation of the building/complex.
________________________________________________________ Signature of Licensed Electrical Worker
Date: _____________________________________
Licence No:_______________________________________________
Tel No: ____________________________________
Name: ___________________________________________________ Address: _________________________________________________ ___________________________________________________________________________________________________________ PART II I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal mains system/main switchboard of the building/complex. ________________________________________________ Signature of authorised person
Date: _______________________________
________________________________________________ Name
____________________________________ Designation
Official Stamp of the landlord/developer/management corporation
► 53
■ Appendix 4
FORM CS/3H Letter of Consent from the Housing & Development Board To :
SP Services Ltd 111 Somerset Road #06-05 Singapore Power Building Singapore 238164
ELECTRICITY SUPPLY TO : Full Address of the Customer
FOR : Name of Customer
TOTAL LOAD ALLOWED FOR :
AT
VOLTS
PART 1 1
I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex, and the total approved load to the entire building/complex will not be exceeded.
2
I have no objection for the abovementioned load to be connected to the risiing/horizontal mains system/main switchboard of the building/ complex.
3
The Electrical Installation Licence No. of the building/complex is
4
The electrical installation of the building/complex from which this load is to be connected is
5
■
Unmetered (i.e. without Master Account)
■
Metered under Master Account No.
.
I will check to ensure that the abovementioned iinstallation is compatible with the electrical installation of the building/complex.
Signature of LEW :
Date :
Licence Number :
Tel No :
Name : Address :
PART 2 1
I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal/ mains system/main switchboard of the building/complex.
2
The HDB area code is
Date : Signature of Authorised Person For and on behalf of Housing & Development Board
Name :
▲
54
Designation :
■ Appendix 5
Request to Handover Substation
Date :
To :
PowerGrid Ltd 111 Somerset Road #08-05 Singapore Power Building Singapore 238164 Attn: Senior Manager (Customer Projects – East/West/Distribution Projects)
Dear Sir PROJECT : ELECTRICITY SUPPLY TO 1.
In connection with the electrification scheme (SPSL Appln No : ________________ ), I wish to advise that the proposed PowerGrid substation has been completed in accordance with plans and specifications approved by your Company and the Competent Authority.
2.
I confirm that the structural Professional Engineer in-charge has certified that the substation structure is constructed according to the approved plan to withstand the load specified by your Company.
3.
I also certify that the electrical installation at the substation has been inspected and tested in accordance with the requirements of your Company as follows:
4.
a
Earth value of electrode system is ______________ ohms.
b
The continuity of each circuit protective conductor is satisfactory.
c
All metal conduits have been bonded to earth.
d
Polarity throughout the installation is correct.
e
All single pole control devices are in live conductors only.
f
The insulation resistance of the fixed wiring installation is ___________ Megaohm.
g
All flexible cords, switches, fuses, plugs and socket outlets are in good serviceable condition.
h
The installation includes ______________ Nos lighting points and _______________ Nos socket outlets.
I shall be obliged if you could send your representative for a joint site inspection on _____________________, and thereafter to takeover the said substation.
Yours faithfully
Signature of Licensed Electrical Worker
Name : Address : Tel No :
NB :
This form must be submitted one week prior to the date for joint site inspection, which shall normally take place from 10 am to 12 noon.
▲
55
■ Appendix 6
SP SERVICES LTD (Acting for itself and as agent for and on behalf of Public Utilities Board and City Gas Pte Ltd for the supply of utilities) APPLICATION(S) FOR THE SUPPLY OF WATER, ELECTRICITY AND/OR GAS Name of Consumer
……………………………………………………………………… NRIC/Passport No. ………………………………
(personal or company)
……………………………………………………………………… Co Reg No. (“the Consumer”) Co Reg Date
Address of Premises for
……………………………… ………………………………
………………………………………………………………………
which supplies are required ……………………………………………………………………… Contact Tel No. (“the Premises”) Fax No.
……………………………… ………………………………
Mailing Address (if different from
…………………………………………………………………………………………………………………………………
the Premises)
…………………………………………………………………………………………………………………………………
1.
I/We make application(s) for the following utilities:
■ Water supply from the Public Utilities Board 2.
■ Electricity supply from SP Services Ltd
■ Gas supply from City Gas Pte Ltd
I/We agree that each application for a utility, when accepted, will constitute a binding contract between myself/ourselves and Public Utilities Board/SP Services Ltd/City Gas Pte Ltd (as in the case may be) and I/We agree that each of such contract shall be separate and independent from each other and shall be separately enforceable.
3.
“In the event that I/We make an application for gas at a later date, I/We agree to be bound by the terms and conditions for supply of gas set out in Part III overleaf and such other additional terms and conditions which City Gas Pte Ltd may, at its absolute discretion, notify and impose. I/We understand that nothing herein shall be constructed as an offer by City Gas Pte Ltd to supply gas to me/us and that City Gas Pte Ltd has the absolute discretion to reject my application for gas supply for any reason.”
4.
I/We agree to be bound by the terms and conditions specified by each supplier as set out in Part I (Water Supply)/Part II (Electricity Supply)/ Part III (Gas Supply) overleaf.
…………………………………………………………………… Consumer’s Signature/Date
……………………………………………………………………………… Name, Designation & NRIC/Passport No.
Co Stamp (Where applicable)
of Person signing for Company
FOR OFFICIAL USE Name
NRIC/Passport No. Co Reg No.
Address
Your A/C No.
Appointment for Turn-on of Supplies Utility
Date
Time
CC DCI BC
FC Code
Date
IF YOUR WATER METER IS OUTSIDE YOUR PREMISES,
FOR ELECTRICITY TURN-ON, PLEASE WAIT FOR THE TECHNICIAN TO INSPECT THE
YOU NEED NOT BE PRESENT FOR WATER TURN-ON.
PREMISES AT THE APPOINTED TIME UNLESS STATED ABOVE.
▲
56
■ Appendix 7
SP SERVICES LTD APPLICATION FORM FOR INTERBANK GIRO PART 1: FOR APPLICANT’S COMPLETION (fill in the spaces indicated with ❑) Date: ❑
Name of Billing Organisation: SP SERVICES LTD
To: Name of Bank: ❑
Utilities Account Holder’s Name: ❑
Branch: ❑
Utilities Account Holder’s Number: ❑
(a) I/We hereby instruct you to process SP Services’ instructions to debit my/our account. (b) You are entitled to reject SP Services’ debit instructions if my/our account does not have sufficient funds and charge me/us a fee for this. You may also at your discretion allow the debit even if this results in an overdraft on the account and impose charges accordingly. (c) This authorisation will remain in force until terminated by your written notice sent to my/our address last known to you or upon receipt of my/our written revocation through SP Services.
My/Our Name(s): ❑
My/Our Contact (Tel/Fax) Number(s): ❑
My/Our Bank Account Number: ❑
My Signature/Thumbprint: ❑ (As in Bank’s Records)
Bank Account Holder NRIC No / P/P No: ❑
Our Company Stamp/Signature ❑ (As in Bank’s Records)
PART 2: FOR SP SERVICES’ COMPLETION Bank
Branch
SP Services’ Account No.
Bank
Branch
Account No. To Be Debited
Utilities Account No.
PART 3: FOR BANK’S COMPLETION To: SP Services Ltd This Application is hereby REJECTED (please tick) for the following reason(s); ❑ Signature/Thumbprint# differs from Bank’s records ❑ Signature/Thumbprint# incomplete/unclear# ❑ Account operated by signature/thumbprint#
Name of Approving Officer
❑ Wrong account number ❑ Amendment not countersigned by customer ❑ Others:
Authorised Signature
* For thumbprints, please go to the branch with your identification
Date #please delete where inapplicable ▲
57
■ Appendix 8 FORM CS/5 APPLICATION FOR INSPECTION OF ELECTRICAL INSTALLATION For official use To:
SP Services Ltd 111Somerset Road #06-05 Singapore Power Building Singapore 238164
APPLICATION NO:
PART I I/We, #Mr/Mrs/Miss/Messrs____________________________________________________________________________________ (# Delete as appropriate).
(name of applicant/company)
Utility Account No : _____________________________________________________________________________________________________ request you to provide an electrical installation inspection and install
kWh meter. (Please tick if meter is required)
Details of my/our application are as follows: (Please fill in the appropriate box below) An application for electricity supply service has been submitted earlier and approved. SP Services Application Reference No is: _______________________________________ OR This is a new application with details as given in Part II by my/our Licensed Electrical Worker undertaking the project. (Form CS/3 or CS/3H shall be attached for supply connection from landlord’s or HDB’s electrical installation.) My/Our particulars: NRIC number/Company ROC number: ___________________________________________________________________ Name of Authorised Person for Company:_________________________________________________________________ (if applicable)
Forwarding Address: _________________________________________________________________________________ ________________________________________________________Postal Code: ______________ Tel:___________________ Fax : ___________________ Mobile phone: ___________________ Pager:_____________ Email: ____________________________
--------------------------------------------------Signature of Applicant
-------------------------------------------Date
___________________________________________________________________________________________________________ PART II (INSTALLATION DETAILS - To be completed by Licensed Electrical Worker if there is no application submitted earlier)
Project Description: ________________________________________________________________________________________ Site Address: ___________________________________________________________________Postal Code: ________________ Type of Application (Please tick the appropriate boxes) New Supply
Temporary Supply
Upgrading of Supply
Extension
Rewiring
Replacement of switchboard/switchgear
Amalgamation
Downgrading of Supply
Shifting of Meter
Conversion to Master/Sub Metering Scheme Other Services (Please specify) ………………………………………………………………………………
► 58
■ Appendix 8 Supply Connection from:
Landlord’s installation (Form CS/3 is to be submitted)
PowerGrid Ltd’s installation/mains
Type of Development:
Industrial
Commercial
HDB’s installation (HDB's endorsement is required)
Residential
Public Lighting Network (Form CS/3 PL is to be submitted)
Others
Type of Business (Brief Description): ___________________________________________________________________ Total supply capacity (including existing requirement, if any) 30/40A# 230V single-phase (# Delete as appropriate)
60A/80A/100A# 230V single-phase
30A/60A# 400V three-phase
.............kVA at 400V three-phase
PART III DETAILS OF PROPOSED INSTALLATION OR EXTENSION. For HDB residential unit, erasure/amendment to any of
the “QTY” figure below is NOT acceptable.)
QTY
QTY
Lamp points
30/32A SPN ISO
13A socket outlets
30/32A TPN ISO
15A socket outlets
Water Heater Points
15/16A SPN ISO
Others
15/16A TPN ISO 20A SPN ISO 20A TPN ISO ( A completed Certificate of Compliance is required to be submitted if a new meter is required.) Name of LEW : _____________________
LEW Licence No. : _____________
__________________________________ Signature of Licensed Electrical Worker
Date : ______________________
Forwarding address (as registered with EMA): __________________________________ Fax No.: ____________________ _______________________________________________________________________ Contact No.: ___________________ Postal Code: ________________ __________________________________________________________________________________________________ PART IV Endorsement by HDB (applicable for HDB residentiaI premises) 1 I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex, and the total approved load to the entire building/complex will not be exceeded. 2 I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal mains system/main switchboard of the building/complex.
_______________________________________ Name/designation/signature of authorised person for and on behalf of Housing & Development Board
Date: ___________________
► 59
■ Appendix 9
Types and Layout of Substation
The type of substation required will depend on the customer’s load requirement. SPSL shall endeavour to provide the requirement of the substation within 10 business days following the receipt of the application form. Typical layout plans and details for substations of the independent building type are given in Appendices 11 to 14. As a guide, the types of substations applicable for the various load requirements are as follows:
Load Requirement
Primary Distribution
Type of rooms
Voltage Up to 1,000 kVA at 400/230V
Applicable/Substation size
6.6kV 22kV
Up to 2,000 kVA at 400/230V
22kV
Up to 5,000 kW at 22kV
22kV
Drawings
Appendices 11 Switchroom
7.6M x 6.2M x 5.6M
Transformer
4.0M x 4.5M x 3.6M Appendices 12
Switchroom
6.9M x 6.2M x 5.6M
The functional requirements of the substation structure, however, must be complied with. For example, the minimum clear height of the cable chamber and switchroom must be 1.5m and 3.1m respectively even if the substation is integrated into a multi-storey building. Subject to the layout and access being suitable, the customer may incorporate the substation as part of his main building. The typical layout plans shown in this handbook depict only the functional requirements.
▲
60
■ Appendix 10
Submission of Substation Site and Design Plans Before construction of the substation, the LEW shall submit to PowerGrid, 2 sets of plans showing the location of the proposed substation in relation to the rest of the development and detailed layout plans for the substation. One set of plan will be endorsed and returned to the LEW. All plans/drawings to be submitted must be on appropriate A1 or A2 size paper and endorsed by the LEW responsible for the planning, design and supervision of the installation. To facilitate processing, SPSL’s Application Reference Number must be indicated in all submissions which shall be accompanied by a Checklist for Submission of Substation Plans (Appendix 15) In the case of re-submission of plans, all amendments (addition/deletion/revision) made must be highlighted in the new set of drawings and listed out in covering letters. All plans are to be drawn to scale and dimensions used shall be in metric units.
Substation Site Plans These plans should show the location of the proposed substation(s) in relation to the surrounding area and should include the following : (i)
The proposed substation(s)
(ii)
The customer’s switchroom(s)
(iii) The proposed PowerGrid’s incoming cable and customer’s service cable routes (iv) The orientation of other buildings within the development site (v)
The proposed driveway to the substation entrance (to be shaded in red)
(vi) The existing and proposed drains; and (vii) North-East Gridlines or 2 NE survey coordinates.
Substation Design/Layout Plans It is mandatory that the drawings must include : 1
The detailed requirements for the design of the substation are listed in Appendix 16. Unless explicit waiver is granted, these requirements are to be incorporated in the architectural plans.
2
Plan, Front, Rear and Side Elevations of the substation and at least 2 cross-sections showing the surrounding roads, cable chamber, switchroom beams and clear height, switchroom floor openings, transformer plinths and other pertinent details.
3
Details of immediately adjoining upper floor, basement as well as adjacent space all around the substation shall be depicted, if the substation is part of a larger building
It is the responsibility of the LEW in charge to ensure that all the requirements as endorsed on the drawings are incorporated in the architectural and structural plans before construction work of the substation begins.
▲
61
■ Appendix 11
6.6KV/LV SUBSTATION
▲
62
■ Appendix 11
6.6KV/LV SUBSTATION
▲
63
■ Appendix 11
6.6KV/LV SUBSTATION
▲
64
■ Appendix 11
6.6KV/LV SUBSTATION
▲
65
■ Appendix 12
22KV/LV SUBSTATION
▲
66
■ Appendix 12
22KV/LV SUBSTATION
▲
67
■ Appendix 12
22KV/LV SUBSTATION
▲
68
■ Appendix 12
22KV/LV SUBSTATION
▲
69
■ Appendix 12
22KV/LV SUBSTATION
▲
70
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOOR FOR ELECTRIC SUBSTATION
▲
71
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOOR FOR ELECTRIC SUBSTATION
▲
72
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOOR FOR ELECTRIC SUBSTATION
▲
73
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOOR FOR ELECTRIC SUBSTATION
▲
74
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOOR FOR ELECTRIC SUBSTATION
▲
75
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOOR FOR ELECTRIC SUBSTATION
▲
76
■ Appendix 14
GATE DETAILS
▲
77
■ Appendix 14
GATE DETAILS
▲
78
■ Appendix 15
PowerGrid Ltd CHECKLIST FOR SUBSTATION BUILDING PLAN SUBMISSION Proposal : Name of Licensed Electrical Worker : BP No (if any) : Yes
Not Applicable
1)
Drawings are in A1 or A2 series.
■
2)
Plan, front, rear and side elevations are included.
■
3)
Cross-sections in relation to roads and immediate surroundings are included.
■
4)
Detailed layout scales of 1:50 for all plans and 1:100 for all sections and elevations.
■
5)
Substation requirements stated in Handbook on How to Apply for Electricity Connection including latest updating are complied with.
■
6)
Plans are signed by the Licensed Electrical Worker.
■
7)
Proper vehicular access to the substation from main road is coloured.
■
8)
I have advised the structural PE that substation structure is to be designed to withstand the loading specified in the Handbook and all structural requirements have been reflected in this submission.
■
9)
All trenches/floor openings are not affected by any beam.
■
10)
Required clear height (from underside of any beam) of all equipment rooms and cable chamber are complied with.
■
11)
No column within substation
■
12)
No wet area above substation
■
13)
Location of Customer’s Switchroom shown with proposed service cable route shown
■
14)
I undertake to advise the architect and structural PE to ensure that all the requirements, as endorsed, are incorporated into the architectural and structural plans prior to substation construction
■
15)
Previous drawings with PowerGrid’s comments are attached (for resubmission case)
■
■
16)
All additions/deletions/amendments are coloured
■
■
17)
Any encumbrances?
■
■
Signature & Stamp of Licensed Electrical Worker
Licence No
Date
Note : Please tick in appropriate box for all items. This checklist is to be submitted for every submission/re-submission. ▲
79
■ Appendix 16
PowerGrid Ltd SUBSTATION LAYOUT REQUIREMENTS TO BE INCORPORATED IN THE ARCHITECTURAL PLANS Item
Requirement
Cable Entry Ducts
•
Heavy duty 150mm dia. UPVC pipes in concrete jacket to be provided and terminated 300mm after the roadside drain.
Cable Entry Ramp
Cable Trenches
Switchgear Floor
•
To be sealed with removable water-tight plugs at both ends of pipes.
•
To have piling, if necessary.
•
Cross Sectional views to be shown.
•
150mm wide removable hot-dipped galvanised mild steel gratings to be provided.
•
Walls and floors to be plastered and rendered waterproof.
•
Sand filling to be carried out after cable installation.
•
Depth of 900mm (no beams shall be allowed within/across the trenches).
•
Openings to be covered by removable hot-dipped galvanised mild steel.
•
Grating of 300mm width which is able to support at least 100 kg.
•
To take a load of 1,600 kg per sq m. Floor beam is to be 200mm away from the HV floor opening. All floor openings to be free of beam.
Switchroom
•
Louvred heavy duty aluminium door to Appendix 13. Size: 2.9M X 1.8M wide nett for 22KV switchroom 2.7M X 1.8M wide nett for 6.6KV switchroom.
•
Floor to have a 50mm thick cement rendering including a 20mm granolithic smooth finish of cement, granite chips and sand in the ratio of 1:1:1 plus 9kg ironite or equivalent approved hardener to each 45 kg of cement. For 22kV substations, final rendering of PowerGrid switchroom floor to be done after installation of switchgear floor frame.
•
Height: No part from floor to ceiling beams to be less than 3.1M. No column allowed within the switchroom.
•
Hot-dipped galvanised mild steel/stainless steel railing to be provided for stairs and loading platform. (Removable type in front of door.)
Transformer Room
•
Hasp and staple (140m x 65m x 6mm) and door hinges to be of brass or stainless steel.
•
Adequate natural lighting required. Provision of glass block in small modules.
•
Ventilation panels to be installed at high level
•
Noise level of 60 dB emitted from each transformer to be considered in the choice of location of transformer yard.
•
Adequate natural cross air ventilation required. Provision of PC vent block or Aluminium ventilation panels.
•
Each transformer plinth to be able to take a dead load of 6 tonnes.
•
Door: 2.7M x 2.7M nett for each transformer. Heavy duty aluminium louvered doors to Appendix 13.
•
LV trench of 800mm min. width for every 2 transformers. Separate LV trench to be provided for additional transformers.
• Wall/Column Finishes
•
Hasp and staple (140mm x 65mm x 6mm) and door hinges to be of brass or stainless steel. All concrete surfaces shall be properly prepared and 20mm cement plastering work carried out such that there should be no cracks, blisters and other defects.
•
The emulsion painting system used for external walls shall be suitable for outdoor application. There shall be a five (5) years warranty of the textured coating on all walls against all defects arising from colour–fastness, faulty workmanship and/or materials, etc.
▲
80
■ Appendix 16
Item
Requirement
Electrical Installation
•
Schematic layout to be shown.
•
All wiring to be in surface conduits.
•
Circuits to be controlled by miniature circuit breakers and ELCB.
•
Isolators for battery chargers to tap supply by-passing ELCB.
•
Substation to be adequately lit. Light fittings are to be installed at 3M (suspension in type) and 2.4M (wall-mounting type) from floor level.
•
Wire-mesh casing to be provided for light fittings installed in cable chamber.
•
To label circuits at DB (distribution board) corresponding to the respective switches, sockets and isolators, etc.
Cable Chamber
•
Trap door floor openings 760mm x 760mm leading to cable chamber to have:
‘Basement’ (where
(a) hinged aluminium chequered covers complete with wall catch.
required)
(b) cat ladders with 6 non-skip steps. Details as shown on drawings. •
Adequate natural ventilation required e.g. PC vent block/Aluminium vent panels. – Height : 2.0m with no part less than 1.5m. – To paint the front and back of all beam with 50mmH red luminous paint. – Chamber floor to be ‘suspended’ type capable of supporting 400 kg/m2 (min).
•
Floor level : 150mm above the immediate external final road or driveway level and above highest flood level recorded. Wall and floor to be waterproofed and adequate drainage to be provided, where necessary.
•
Doors to be fitted with panic hardware and paint in red “Push lever down to open” on internal side of door.
Metering Kiosks
•
To be provided for PowerGrid (see Appendices 31 to 33) when customer is taking HV supply.
Woodwork, Metal Work, etc
•
To be suitably painted and anti-termite treated for all woodwork.
Ceiling
•
To be of smooth finishes and emulsion painted. All beam to be encased in RC concrete.
Roof
•
To be of flat RC suitably waterproofed and laid to falls of 1:80 minimum.
•
Roof eaves with multiple 150mm wide long slot openings to be incorporated for rain water to free-fall direct into apron drain.
Drainage
•
Proper drainage around the substation to be provided with hinged hot-dipped galvanised m.s. gratings.
Gate/Perimeter
•
To be 1.8m high and designed to blend aesthetically with the overall development.
Fencing (where required)
•
Hollow section anodised aluminium gates to Appendix 14.
•
A 600mm wide concrete apron to surround the fence externally.
•
To withstand heavy vehicles with laden load of 10 tonnes for all 22kV and 6.6KV substations.
•
Width of driveway to be 4000mm (min) and surface to be properly paved.
Access Road
•
No car parking lots are to be drawn in such a way as to obstruct vehicular access to substation.
NOTES : (a)
Appointed project LEW is to liaise closely with Architect and Structural Engineer to obtain all their respective requirements for incorporation into final layout plans submitted for PowerGrid’s endorsement.
(b)
All dimensions and figures are to be checked by the Architect/structural engineer/appointed project LEW prior to substation construction.
(c)
If the Management Committee (MCST) were to subsequently replace the security personnel with other means e.g. electronic security systems, etc; PowerGrid Ltd shall be consulted on the free access arrangement to the substation.
(d)
LEW/M&E consultants are to ensure that the proposed substation is constructed to PowerGrid approved plans.
▲
81
■ Appendix 17
GENERAL REQUIREMENTS FOR EHV SUBSTATION (66KV AND 230KV ONLY)
1.
Where an application for supply of electricity necessitates the provision of a substation, the site shall be provided and substation constructed by the applicant consumer at his own cost. The “Guidelines/Requirements for EHV Substation Buildings” will be made available in PowerGrid’s service connection proposal to the applicant.
2.
The applicant shall grant PowerGrid, its officers and agents an irrevocable licence at all times to have full and unrestricted use of the substation and have free access thereto.
3.
PowerGrid may utilize the substation and site in such manner as it deems fit. Subject to the applicant’s requirement being fully provided for, PowerGrid shall be at liberty to use the substation for the purpose of supplying other customers or for the improvement of the transmission network (e.g. upgrading, modification to substation structure, alteration and addition works, etc.)
4.
The substation site within the substation perimeter fence shall be intended solely for the substation development.
5.
The substation structure may be an independent building or form part of a larger building. It shall be located at the 1st storey level and must be readily accessible from the public road. Proper vehicular access to the substation shall be provided for transportation of substation equipment by normal means, i.e. truck and trailer. The gradient of the access road to the EHV substation site (66kV and above) shall not be more than 1:20.
6.
There shall be no danger from flooding and fire hazards.
7.
The substation site shall be free from all encumbrances (existing and future proposed services).
8.
Suitable and proper cable access shall be provided on at least two sides of the substation site for all cables entering and leaving the proposed site. If there is any roadside drain fronting/surrounding the substation site, the applicant shall be required to install cable ducts under-crossing the drain. If the depth of the drain is more than 2.0 meters from the proposed substation ground level, the cable ducts shall be installed to over-cross the drains with approval from the relevant authorities.
10.
The applicant consumer shall consider the effect of noise disturbance to neighboring development in its selection of the substation site.
11.
The site of the substation shall be approved by PowerGrid and the relevant authorities. The applicant shall ensure that all necessary approval for the substation site be obtained from the relevant authorities.
12.
The applicant shall consult PowerGrid on the substation site before commencement of detail design for the substation building. The applicant shall submit the necessary architectural and M&E design drawings, incorporating the necessary requirements in the above-mentioned guidelines/requirements, for PowerGrid’s review and clearances. The applicant shall also obtain the necessary clearances from the relevant authorities.
▲
82
■ Appendix 18
PROTECTION REQUIREMENTS FOR CUSTOMER’S 22KV and 6.6 KV MAIN INCOMING SWITCHGEAR
INCOMING SUPPLY
METERING CTs/PTs TO PG’S REQUIREMENTS
M
REVENUE METERS
o R
Y
c
B o
500/5 CLASS 5P20 15VA OR BETTER
c
E/F
A
o c PILOT WIRE TO PG’S S WI T C H G E A R
500/5 CLASS X PW CB
CUSTOMER’S 22kV AND 6.6kV MAIN INCOMING SWITCHBOARD O/C – E/F
–
PW A CB
– – –
Overcurrent relay type IDMTL with 3/10 characteristics. Plug Setting =100%, Time Multiplier=0.1. Earth fault relay type IDMTL with 3/10 characteristics. Plug Setting =20%, Time Multiplier=0.1. Pilot wire protection relay Solkor ‘R’/ ‘RF’, HOR 4, (For 22kV connection) Ammeter Circuit breaker To circuit breaker trip circuit
Notes : 1. Pilot wire protection CT shall comply with the following requirements: a) Rated knee point voltage at maximum secondary turns not less than 80V. b) Exciting current at the rated knee point voltage not more than 150mA. o c) Resistance of the secondary winding, corrected to 75 C not more than 0.15 ohm. 2. No other auxiliary device shall be connected to the pilot wire protection CTs. Pilot wire protection CT star – point shall be towards protected line. 3. Where there is more than one incoming service, a bus-section breaker shall be provided and be electrically and mechanically interlocked against parallel operation of the incoming services. 4. All 22kV circuits in the customer installation shall be equipped with unit-protection for fast fault clearance, inclusive of fault at cable terminations. ▲
83
■ Appendix 18
PROTECTION REQUIREMENTS FOR CUSTOMER’S LV MAIN INCOMING SWITCHGEAR
INCOMING SUPPLY C X R
Y
B
N
CLASS 5P10 15VA OR BETTER
o c o c E/F o c METERING CTs KWH
REVENUE METER
CUSTOMER’S LV INCOMING SWITCHBOARD O/C –
E/F
–
CT CB
– –
–
Overcurrent relay type IDMTL with 3/10 characteristics or DTL relay. For DTL relay, the setting shall be 100% of approved load with a time lag of not more than 0.5 sec. For IDMTL relay, the plug setting shall be 100% of approved load with a time multiplier of 0.1(or 0.2 for approved load more than 1.5kA and up to 2.2kA and with source from PG’s 22kV substation). Earth fault relay operating at primary fault current of 20% of approved load subject to a maximum of 120 Amp with time lag of not more than 0.5 second. Note: LEW is reminded that under CP5, the overall ohmic resistance of earthing system should not exceed one ohm. The maximum earth fault current setting shall be equal to 50V divided by the earth resistance value. Current transformer Class 5P10, 15VA or better. Circuit breaker with adequate breaking capacity and circuit breaker using shunt trip shall be provided with series trip (Direct acting trip) device that operates with no time delay under short-circuit condition, or with HRC fuses in series. To circuit breaker trip circuit.
Note : Where there is more than one incoming service, a 4-pole bus-section breaker shall be provided and be mechanically interlocked against parallel operation of the incoming services.
▲
84
■ Appendix 18
TYPE 1: CUSTOMER 66KV FEEDER CONNECTION (WITHOUT EMBEDDED GENERATION PLANT)
Type 1a: Supply from PowerGrid 66kV Source Substation
Numerical Relay System (OFC) (see note iii)
PowerGrid 66kV S/S
Feeder Main 1 (plus Main 2 if Source S/S)
Feeder Main 1
LFCB102
Feeder Main 2
7SD511/REL316*4
Inter-tripping
LFCB102
Remote End Interlock (on ES & DS)
Mechanical
Electromechanical Relay System (Metallic pilot wire) (see note iii)
87L
Interface points
Solkor - Rf
Feeder Main 2
Translay S
Inter-tripping
Solkor-Rf
Remote End Interlock (on ES & DS)
Mechanical
Type 1b: Supply from PowerGrid 66kV Non-Source Substation
Numerical Relay System (OFC pilot wire) (see note iii)
PowerGrid’s Scope
Customer’s Scope
Pilot/OFC Marshalling Box
Feeder Main 1
Feeder Main 1
LFCB102
Inter-tripping
LFCB102
Remote End Interlock (on ES & DS)
Mechanical
Electromechanical Relay System (Metallic pilot wire) (see note iii)
87L
Feeder Main 1
Solkor - Rf
Inter-tripping
Solkor-Rf
Remote End Interlock (on ES & DS)
Mechanical
Notes : Customer 66kV S/S
i)
All electromechanical feeder protection relays are to be equipped with supervision and guard relays.
ii) Engineering and Protection details shall be discussed on application. iii) For reason of obsolescence or availability, the type of relays and protection schemes shall subject to review and confirmation during the consultation period. iv) Customer to supply and install pilot marshalling board of approved design to accommodate the optic fibre cables and other auxiliary cables. v) Intertrip scheme where applicable shall be implemented via the main protection system.
▲
85
■ Appendix 18
TYPE 2: CUSTOMER 66KV FEEDER CONNECTION (WITH EMBEDDED GENERATION PLANT)
Type 2a: Supply from PowerGrid 66kV Source Substation
PowerGrid 66kV S/S
Numerical Relay System (OFC) (see note iii) Feeder Main 1
LFCB102
Feeder Main 2
7SD511/REL316*4
Inter-tripping
NSD70D
Remote End Interlock (on ES, DS & CB)
Mechanical & Electrical (NSD70D)
Switching sequencing
NSD70D
Electromechanical Relay System (Metallic pilot wire) (see note iii) Feeder Main 1
Solkor - Rf
Feeder Main 2
Translay S
Inter-tripping
NSD70C
Remote End Interlock (on ES, DS & CB):
Mechanical & Electrical (NSD70C)
Switching sequencing:
NSD70C
Feeder Main 1 (plus Main 2 if Source S/S) 87L NSD70
For inter-tripping and remote electrical interlock
Interface points PowerGrid’s Scope
Type 2b: Supply from PowerGrid 66kV Non-Source Substation
Numerical Relay System (OFC) (see note iii) Feeder Main 1
LFCB102
Inter-tripping
NSD70D
Remote End Interlock (on ES, DS & CB)
Mechanical & Electrical (NSD70D)
Switching sequencing:
NSD70D
Electromechanical Relay System (Metallic pilot wire) (see note iii) Feeder Main 1
Solkor - Rf
Inter-tripping
NSD70C
Remote End Interlock (on ES, DS & CB)
Mechanical & Electrical (NSD70C)
Switching sequencing:
NSD70C
Notes : i)
All electromechanical feeder protection relays are to be equipped with supervision and guard relays.
ii) Engineering and Protection details shall be discussed on application. iii) For reason of obsolescence or availability, the type of relays and protection schemes shall subject to review and confirmation during the consultation period. iv) Customer to supply and install pilot marshalling board of approved design to accommodate the optic fibre cables and other auxiliary cables.
▲
86
Customer’s Scope
Pilot/OFC Marshalling Box
87L NSD70
Customer 66kV S/S
■ Appendix 18
TYPE 3: CUSTOMER 66KV FEEDER TRANSFORMER CONNECTION
Type 3a: Supply from PowerGrid 66kV Source Substation
PowerGrid 66kV S/S
Numerical Relay System (OFC) (see note iii)
Feeder Main 1 (plus Main 2 if Source S/S) 87L
Interface points
LFCB102
Feeder Main 2
7SD511/REL316*4
Inter-tripping
LFCB102
Remote End Interlock (on ES & DS & T/F neutral) Electromechanical Relay System (Metallic pilot wire) (see note iii)
Mechanical
Feeder Main 1
Solkor - Rf
Feeder Main 2
Translay S
Inter-tripping
NSD70C
Remote End Interlock (on ES & DS & T/F neutral)
Mechanical
Type 3b: Supply from PowerGrid 66kV Non-Source Substation
PowerGrid’s Scope
Numerical Relay System (OFC) (see note iii)
Customer’s Scope
Pilot/OFC Marshalling Box
Feeder Main 1
87L
Feeder Main 1
LFCB102
Inter-tripping
LFCB102
Remote End Interlock
Mechanical
(on ES & DS & T/F neutral)
Electromechanical Relay System (Metallic pilot wire) (see note iii) Include REF, TF Diff, OC/EF & other local protection system 87T
Feeder Main 1
Solkor - Rf
Inter-tripping
NSD70C
Remote End Interlock
Mechanical
(on ES & DS & T/F neutral)
Customer 22kV S/S
Notes : i)
All electromechanical feeder protection relays are to be equipped with supervision and guard relays.
ii) Engineering and Protection details shall be discussed on application. iii) For reason of obsolescence or availability, the type of relays and protection schemes shall subject to review and confirmation during the consultation period. iv) Customer to supply and install pilot marshalling board of approved design to accommodate the optic fibre cables and other auxiliary cables. v) Intertrip scheme shall be implemented via the main protection system or the signalling equipment.
▲
87
■ Appendix 18
TYPE 4: CUSTOMER 230KV FEEDER CONNECTION
Supply from PowerGrid 230kV Substation
Numerical Relay System (OFC) (see note ii) Feeder Main 1
Current Differential
Feeder Main 2
Current Differential with Distance Protection
Teleprotection
NSD70D
Inter-tripping
NSD70D
Remote End Interlock (on ES, DS & CB)
Mechanical & Electrical (NSD70D)
Switching sequencing
NSD70D
PowerGrid 230kV S/S
Main 1 and Main Two 87L NSD70 For teleprotection inter-tripping and remote electrical interlock
Notes : i)
Engineering and Protection details shall be discussed on application.
Interface points
ii) For reason of obsolescence or availability, the type of
PowerGrid’s Scope
relays and protection schemes shall subject to review and confirmation during the consultation period.
Customer’s Scope
iii) Customer to supply and install pilot marshalling board of approved design to accommodate the optic fibre cables and other auxiliary cables.
Pilot/OFC Marshalling Box
87L NSD70
Customer 230kV S/S
▲
88
■ Appendix 18
TYPE 5: CUSTOMER 230KV FEEDER TRANSFORMER CONNECTION
Supply from PowerGrid 230kV Substation
Numerical Relay System (OFC) (see note ii)
PowerGrid 230kV S/S Main 1 Main 2
NSD70
87L
For teleprotection inter-tripping and remote electrical interlock
Feeder Main 1
Current Differential
Feeder Main 2
Current Differential with Distance Protection
Teleprotection
NSD70D
Inter-tripping
NSD70D
Remote End Interlock (on ES, DS & CB)
Mechanical & Electrical (NSD70D)
Switching sequencing:
NSD70D
Notes : i) Engineering and Protection details shall be discussed on Interface points
application. PowerGrid’s i)
For reason of obsolescence or availability, the type of
Scope
relays and protection schemes shall subject to review and
Customer’s Scope
Pilot/OFC Marshalling Box
confirmation during the consultation period. iii) Customer to supply and install pilot marshalling board of approved design to accommodate the optic fibre cables
87L
and other auxiliary cables. Include T/F Diff, REF, OC/EF & other local protection system
NSD70
87T
Customer 66kV S/S
▲
89
■ Appendix 19
APPLICATION FOR DE-ENERGISATION / RE-ENERGISATION (ADRE) Licensed Installation No
Service No
Voltage
Name of Installation: Address of Installation: Requested De-energisation Date
Time
Contestable Customer :
Requested Re-energisation *am/pm
#Name of Customer :
Date
Time
#MSS A/C No :
*am/pm
#Name of Retailer:
*Yes / No Section EHVN RNW RNC RNE RNN RNS CPE CPW DP
Fax No 62909124 66609390 62799590 62409203 67653745 62909110 62409225 62799532 62909140
Tel No 62909121 66609301 62799501 62409218 63146172 62909101 62409257 62799559 62909139
To:
*Sr Manager (EHV Network) *Sr Manager (Regional Network – *West / Central / East / North / South) *Sr Manager (Customer Project- *East / West) *Sr Manager (Distribution Projects)
(1)
I, the undersigned LEW for the above installation, wish to apply for a *de-energisation/re-energisation at the time stated above. My work, after the de-energisation, will involve the following: *1
Routine Servicing (Please Specify)
2
(2)
* I / or (Name / Licence No of appointee approved by Regulation Division of EMA) will attend to the *de-energisation / re-energisation PERSONALLY.
(3)
I understand that: (a) No work is to be carried out on the service cable until both PowerGrid officer and myself have signed the SDRE (“Statement for De-energisation and Re-energisation”) after we have safely isolated the service cable at both ends. (b) I am required to be on time on the approved date of de-energisation or re-energisation, failing which the PowerGrid officer may cancel any appointment made.
Telephone/HP No.:
Signature : Name :
Licence No :
Date :
Notes : (a) (b) (c) (d)
*Grade: Engineer Technician Electrician
All requested date and time are subject to PowerGrid’s approval. For non-contestable customers, this form should reach PowerGrid 7 business days before the requested date. For contestable customers, this form should reach PowerGrid 14 business days before the requested date. For urgent work on Sundays / Public Holidays and after office hours, LEW is required to co-ordinate with PowerGrid personally. (e) * Delete whichever is not applicable. (f) # To be filled in for contestable customer.
► 90
■ Appendix 20
POWERGRID LTD
A No. 00001
STATEMENT FOR DE-ENERGISATION AND RE-ENERGISATION (SDRE) Part I & II concern the de-energisation and re-energisation of the service cable specified below. Each statement is valid only when it is signed by both the LEW of the installation and the POWERGRID officer-in-charge of the deenergisation or re-energisation. Name Of Installation: _________________________________________________________________________ Service Cable No. : *1 / 2 / 3 / 4 Isolated From (Substation Name, OG Box, Etc): ____________________________________________________ This de-energisation is *due to tripping / requested by PowerGrid / requested by LEW. * - please delete whichever is not applicable
PART I : DE-ENERGISATION STATEMENT (TO BE SIGNED AFTER DE-ENERGISATION) (This statement is required only when work is to be done on the service cable by either the LEW or the PowerGrid officer, or both) Date:
Time:
DECLARATION BY LEW: I, the undersigned LEW, hereby declare that the above service cable has been turned-off and safely isolated from the customer's intake switchboard. Signature:
Name:
Licence No.
DECLARATION BY POWERGRID OFFICER: I, the undersigned POWERGRID officer, hereby declare that the above service cable has been de-energised and safely isolated from the PowerGrid’s network. Signature:
Name:
Section:
PART II : RE-ENERGISATION STATEMENT (TO BE SIGNED BEFORE RE-ENERGISATION) Date: _____________________
Time:
DECLARATION BY LEW: I, the undersigned LEW, hereby declare that the customer's switchgear, to which the above mentioned service cable is connected, is cleared of all earthing leads, labour and tools, and that the switchgear is fit for re-energisation from the POWERGRID’s end with effect from the time specified above. I undertake to ensure that no work by any person will be carried out on the service cable at the customer's end until a new de-energisation statement is signed by both parties. Signature:
Name:
Licence No.
ACKNOWLEDGEMENT BY POWERGRID OFFICER: Signature:
Name:
Section:
PART III : DECLARATION BY LEW ON THE TIME OF TURN-OFF AND TURN-ON OF INCOMING SUPPLY AT CUSTOMER’S INTAKE SWITCHBOARD (for Contestable Customer only) TO : SP SERVICES LTD (Fax no: 68206800, tel no: 68238288) Name of Customer : _________________________________________
MSS A/C No : ______________
Address of Installation : _______________________________________________________________________ DECLARATION BY LEW: I, the undersigned LEW, hereby declare that I had turned-off and turned-on the incoming supply at the customer’s intake switchboard at the following date / time: Date of Turn-Off : __________________
Time of Turn-Off : __________________
Date of Turn-On : __________________
Time of Turn-On : __________________
Signature:
Name:
Licence No.
► 91
■ Appendix 21 CERTIFICATE OF READINESS FOR THE ENERGISATION OF SERVICE CONNECTION Name of Customer Installation: Address: Customer Installation Licence No/Expiry Date: Connection Voltage: Approved Load: Name of Connection Cable(s): Owned by Connection Applicant (Yes / No) MSS Account No: Name of Retailer:
Certification By LEW I, ______________________(name) the undersigned LEW, hereby certify that the service connection*, the equipment and works at the above installation (Licence No: ______________) are now ready and fit for energisation with effect from the date and time specified below. Date: Time: I certify that: a. protection details are as follows**: CT Ratio: /1A or 5A* Short-Time Withstand Current Ratings of Main Supply Incoming Switchgear_______KA for 3 sec Main 1 Type: Direct Acting Tripping Setting: ______________ Main 2 Type*: O/C Type: E/F Type:
Setting: Setting:
b. the switching equipment/transformer/service connection* and all associated apparatus related to the service connection have been tested and checked by me and they have passed the pre-commissioning checks and tests in compliance with the Market Rules, Transmission Code, Handbook on How to Apply for Electricity Connection, Connection Agreement, all other applicable standards, and the associated protection systems have all been proven effective. c. The main protection schemes for the service connection have been commissioned by load simulation method on date: ______________** d. *for multi-metered installation with the exception of HDB residential installation, the metering scheme has been designed as master/sub-metering scheme. * **
► 92
Delete where not applicable To indicate NA where protection scheme is not applicable
■ Appendix 21 e
all necessary meters have been installed.
f.
the safety coordination requirements of the Transmission Code have been fully complied with.
g. all workmen have been withdrawn and warned that it is no longer safe to continue to work on the equipment without a ‘Permit-to-work (PTW)’, and that all tools, scaffolding, ladders, construction materials including any temporary local earthing connections have been removed from the equipment, and all protective screens or guards, if any, have been securely fixed and the appropriate warning signs displayed and that all keys, if any, necessary for the isolation and operation of the equipment have been handed to me. h. all circuit earth on equipment to be energised are removed. i.
equipment to be energised in this request (the diagram must clearly indicate the portion of the equipment to be energised. If space is insufficient, please provide diagram as attachment) is shown below:
Name & Signature of LEW responsible for the design of the customer installation/ operation of the electrical installation#
Licence No.
Date
# applicable for re-energisation of service connection only ► 93
■ Appendix 22.1 FORM CS/6 REQUEST FOR INSTALLATION OF ELECTRICITY KWH METER FOR NEW SUPPLY UNDER DIRECT SUPPLY FROM POWERGRID (CONTESTABLE CUSTOMER) For official use
CMS Installation no. ________________ PART I Customer Details – To be completed by LEW Name of Customer(Mr/Mdm) /Company(Messrs): _________________________________________________ NRIC/Company ROC:_______________________________________________________________________ Application no.: _______________________________ _____________________
Type Of Business:
Site Address as given by IRAS :________________________________________________________________ (You are required to enclose a copy of the IRAS letter.)
Telephone point(s)/No(s). : _____________________________________________________________________ (For contestable customer, you are required to install telephone point(s) adjacent to the meter panel before applying for the installation of the meters)
Supply Capacity :____________________kVA at ___________ Volts Telephone No. : ____________________ Pager/Handphone No. : ____________________________________ Name of LEW : ____________________________
LEW License no. : ________________
Telephone no. : _____________ Handphone no. : ______________
Facsimile no. : ___________________
Signature
Date : _________________________
: __________________________________
*Note: LEW shall be informed of MSSL account no. after meters have been installed. LEW shall apply for license to operate electrical installation before proceeding to Installation Section to book for turn on appointment date.
_____________________________________________________________________________________________ PART II (For official use) To:
Meter Reading Branch, SP Services Ltd Meter Serial No.
Facsimile no.: __________
Opening Meter Reading
Installation Date
Date : ______________ Data Entered by: ________________________ Signature : _________________ (Full Name)
____________________________________________________________________________________________ PART III (For official use)
To:
Customer Services Section(MSSL), SP Services Ltd
Create MSSL Account no. : ______________________
Facsimile no.: 6820 6800
LEW has been notified of MSSL account no.
Date : ______________ Account Opened by: ________________________ Signature : _______________ (Full Name)
► 94
■ Appexdix 22.2 Form CS/7 REQUEST FOR INSTALLATION OF ELECTRICITY KWH METER (FOR LOAD EXCEEDING 45KVA) UNDER MULTI-METERED BUILDING SCHEME For official use
Serial No.: ____________________ Electricity Installation Number ___________________ PART I Customer Details – To be completed by LEW Name of Customer(Mr/Mdm) /Company(Messrs): _________________________________________________ NRIC/Company ROC:________________ Name of Contact Person for Company: _______________________ Telephone No. : ____________________ Pager/Handphone No. : ___________________________________ Site Address for Installation of Meter: ___________________________________________________________ Telephone point(s)/No(s). : ___________________________________________________________________ (For contestable customer, you are required to install telephone point(s) adjacent to the meter panel before applying for the installation of the meter panel)
A/c no.: : _________________________
Master A/c no.: __________________________
(For non-contestable customer only)
(For non-contestable customer only)
Supply Capacity :___________kW at ___________ Volts
Type of Business: ______________________
(Form CS/3 or CS3/H and COC shall be submitted together with this form)
Details of Landlord/MCST Name of Landlord/MCST: _______________________________ Landlord’s Account no. : ___________________ Forwarding Address : _______________________________________________________Postal Code ________ Name of LEW in charge of landlord’s electrical installation : ____________________________________________ Contact no of Landlord’s LEW : __________________________________________________________________ _____________________________________________________________________________________________ Name of LEW : ___________________
LEW Licence no. : _________________
Forwarding Address (as registered with EMA) : ____________________________________Postal Code_________ Telephone no. : _____________ Handphone no. : ______________
Facsimile no. : ___________________
Signature : __________________________________ Date : _________________________ ____________________________________________________________________________________________ PART II (For official use) To:
Meter Section, PowerGrid Ltd Meter Serial No.
Facsimile no.: 62777 008 Opening Meter Reading
Installation Date
Date : ______________ Data Entered by: ________________________ Signature : _____________________ (Full Name)
► 95
■ Appendix 22.2
PART III (For official use)
To:
Supply Application, SP Services Ltd
For Non-Contestable Customer : Check and perform Master-sub Tagging Sent to CRO for account move in on ____________
Move in/ Turn-On Date is on ______________
► 96
■ Appendix 23
APPLICATION FOR APPOINTMENT FOR ENERGISATION OF SERVICE CONNECTION BY FAX
Facsimile Transmittal Sheet To :
Manager, Installation Branch
From :
Company :
SP Services Ltd
Company :
Fax No :
62777044
Fax No :
(Name of LEW)
Date :
Office Tel :
Application No :
Pager / Handphone No :
*SPSL/MSSL a/c ref :
Approved Load :
Total no of pages (including this page) : I,
(LEW’s name)
(EMA Licence No.) would like to make an appointment for
energisation of service connection to (site address)
The applicant is a *contestable/non-contestable customer. The following documents are faxed together with this application. Documents
Tick if applicable
1)
Opening of Account with SPSL
2)
Opening of Account with Electricity Retailer/MSSL (for contestable customer)
3)
Confirmation of meters already fixed (for contestable customer)
4)
Electrical Installation License issued by EMA
5)
Certificate of Compliance (original to be submitted to PowerGrid’s project officer)
I will submit the Certificate of Readiness on site, failing which service connection shall not be energised and PowerGrid Ltd shall not be liable for any losses arising therefrom. I understand that the date of appointment is subject to confirmation by SP Services Ltd and the appointment date shall not be earlier than 4 business days from this fax date. The preferred appointment dates are as follows: 1st choice : Date
Time: Morning/Afternoon * (* delete whichever not applicable)
2nd choice : Date
Time: Morning/Afternoon *
3rd choice : Date
Time: Morning/Afternoon *
Name & Signature of LEW
FOR OFFICIAL USE The appointment for energisation of service connection is fixed on
at (date)
. (time)
Please liaise with Meter Section of PowerGrid Ltd for the fixing of revenue meter before the energisation. For clarification, please contact
at Tel : 627770
.
▲
97
■ Appendix 24
TECHNICAL REQUIREMENTS FOR SERVICE CABLE AND METER COMPARTMENT FOR LANDED HOUSES
1
The service cable termination and meter compartment shall be located at the front-gate pillar/perimeter wall such that it is accessible to SPSL’s and PowerGrid’s personnel without the need to enter the customer’s premises. It shall be constructed of concrete, brick or high impact fibre glass and shall be completely weatherproof. Provision shall be made to prevent any stagnation of water within the compartment. The main dimensions of the compartment are shown in the layout drawing (see Appendix 25). The depth of the compartment shall be between 250 mm and 300 mm. A meter board of 20 mm thick and constructed of teak wood or any hardwood chemically treated against termite attack shall be provided. Plywood board is not acceptable. A minimum space of 450 mm (W) x 800 mm (H) shall be allowed for the termination of the service cable and the installation of service MCBs and meters. Customer’s MCBs or connectors shall be mounted on a separate board in a separate compartment. A hinged door with a clear glass viewing window shall be provided. The viewing window with a 200 mm (W) x 300 mm (H) x 6 mm (thickness) glass cover shall be positioned to be directly in front of the meter location. To avoid high humidity and condensation within the compartment, sufficient ventilation shall be provided. The access door shall not have less than 450 mm clear access opening. The door shall be constructed of stainless steel, anodised aluminium or high impact type fibre glass reinforced material. Where a metal door is provided, a means of earthing shall be provided. One 100mm diameter UPVC lead-in pipe shall be provided for PowerGrid service cable. The pipe shall be laid up to 100 mm from the floor slab of the electric meter compartment and shall undercross any drain in front of the compartment. There shall be adequate standing space in front of the compartment to facilitate meter reading, installation and maintenance work. Where there exists a drain in front of the compartment, a suitable concrete platform or hinged galvanised steel grating shall be provided. The compartment shall be exclusively used for service cable and electricity meter. No water meter, gas meter or other facilities shall be placed within the same compartment. Please obtain clearance from URA’s Development Control Division if the meter-box structure exceeds their stipulated dimensions.
2 3 4
5
6 7
8
9 10
▲
98
■ Appendix 24
STANDARD METER COMPARTMENTS AT GATE PILLAR
▲
99
■ Appendix 25
STANDARD METER BOARD
▲
100
■ Appendix 26
STANDARD SIZE FOR SINGLE-PHASE METER BOARD
1.
2. 3. 4. 5. 6. 7. 8.
Minimum space for single-phase meter position (enclosed within broken lines) : (i) 230mm (W) x 280mm (H) for 25 sq mm cable and below. (ii) 230mm (W) x 300mm (H) for 35 sq mm cable. A customer’s earthing terminal shall be provided on the meter board for termination of the earthing lead and earth continuity conductor. Not more than one wire shall be connected to each terminal of the meter terminal block. All wires on the meter board from MCB/Cut-Out to the meter and meter to main switch should preferably be run on the surface. The size of cables to be used for connection to meters should not exceed 35 sq mm. The minimum length of wire “L” protruding from the meter board to the meter terminal shall be at least 200mm. For meters grouped in a centralised meter room etc, an additional minimum spacing of 70mm is necessary between each row of meters for ease of installation/change. Some typical layouts are shown in figures A, B and C. ▲
101
■ Appendix 27
STANDARD SIZE FOR THREE-PHASE METER BOARD
1. 2. 3. 4. 5. 6.
Minimum space for three-phase meter position 450mm (W) x 450mm (H) (enclosed within broken lines) : A customer’s earthing shall be provided on the meter board for termination of the earthing lead and earth continuity conductor. Not more than one wire shall be connected to each terminal of the meter terminal block. All wires from the meter board from MCB/Cut-Out to meter and meter to main switch should preferably be run on the surface. The size of cables to be used for connection to meters should not exceed 35 sq mm. The minimum length of wire “L” protruding from the meter board to the meter terminal should be 200mm.
▲
102
■ Appendix 28
CT METER PANEL FOR LOW VOLTAGE SUPPLY
▲
103
■ Appendix 29
METHODS OF SEALING METER PANELS
▲
104
■ Appendix 30
ENCLOSURE FOR LOW VOLTAGE METERING CURRENT TRANSFORMERS
▲
105
■ Appendix 31
HV METERING KIOSK REQUIREMENTS (FOR 1 OR 2 FEEDERS)
HV Metering Kiosk Requirements (for 1 or 2 feeders) The following are required : a) Metering kiosk : 650mm by 1700mm by minimum height 2400mm of solid brick as shown. b) Floor opening 50mm by 50mm as shown. c) Staircase and 1000mm landing where required. d) Steel or heavy duty aluminium door of 1200mm wide by 2100mm height to be fitted with one of the Grid approved master series locksets as given in section 6.1.5. e) One 13A switched socket outlet, one 40W lighting point and one fixed telephone line c/w telephone socket outlet. f) Metal grill top cover if the back wall does not extend to the roof or ventilation louvers of size 600mm x 900mm if the back wall extends to the roof. g) If landing is above ground level, safety railings must be provided. ▲
106
■ Appendix 32
HV METERING KIOSK REQUIREMENTS (FOR 3 OR 4 FEEDERS)
Side Elevation of Metering Kiosk for 3 or 4 feeder panel The following are required : a) Metering kiosk : 810mm by 2650mm by minimum height 2400mm of solid brick as shown. b) Floor opening 100mm by 60mm as shown. c) Staircase and 1000mm landing where required. d) Steel or heavy duty aluminium door of 800mm wide by 2100mm height to be fitted with one of the Grid approved master series locksets as given in section 6.1.5. e) One 13A switched socket outlet, two 40W lighting points and one fixed telephone line c/w telephone socket outlet. f) Metal grill top cover if the back wall does not extend to the roof or two ventilation louvers of size 600mm x 900mm if the back wall extends to the roof. g) If landing is above ground level, safety railings must be provided.
▲
107
■ Appendix 32
HV METERING KIOSK REQUIREMENTS (FOR 3 OR 4 FEEDERS)
▲
108
■ Appendix 33
HV METERING PANEL REQUIREMENTS (FOR 1 OR 2 FEEDERS)
▲
109
■ Appendix 34
METERING VTS Voltage Ratio, Sequence And Phase Angle Tests Report
Customer :
A/C No :
Project Address :
APC No : Voltage Ratio :
VTs No : For Feeder No :
I,
, EMA Licensed No.
had carried out the above test and results are given below.
I hereby certify that the VTs are correctly connected up for tariff metering.
Stamp and Signature of LEW
Date :
Primary (
V)
Secondary
Phase Angle Frequency
Across RY
Sequence Across RY
RE
YR
YB
YB
YE
BR
BE
YB
YE
BY
BR
BR
BE
RY
RE
BR
BE
RB
▲
110
RY
RE
YB
YE
Volt
Lead
Lag
■ Appendix 35
BASIS FOR THE SERVICE CONNECTION CHARGE
1
Service Connection Charges for Low Voltage (LV) Connection All LT consumers are required to pay a one-time upfront service connection charge. These charges which vary for different load requirements are categorised depending on the provision of a substation. For larger consumers with substations, their supply intake point is usually adjacent to the substation, which requires a service cable of approximately 15m in most instances. Therefore, the standard connection charge is computed based on a cost of service cable length of 15m. Consumers shall pay the additional cost for service cable exceeding 15m. In addition, consumers shall also pay for those dedicated assets, such as switchgear and transformers, which are serving them and do not benefit others. For individual small consumers without substations, the cost of LT service cable for the same capacity may vary widely depending on their locations with respect to the nearest LT mains. These consumers are not the sole beneficiaries of the extension of the LT network. To achieve a greater degree of equity in terms of cost for these general consumers, a standard cost approach is adopted based on similar requirements. The average global cost based on capacity is determined from past statistics. As such, this category of consumers which comprises mainly the individual landed residential owners, applying for the same applied load would pay the same standard connection charge regardless of the location of their premises from the existing LT network. Standard charges are only applicable to consumers who are connected to the shared network. The rates, which are approved by EMA, are available in the Transmission Services Rate Schedule. Standard charges are not applicable to consumers where the network created is unlikely to be shared by others. Some of these include supply to HDB premises, temporary work sites, public installations and offshore island premises. These consumers would have to pay for the full connection network cost, based on user-pay principle, as they are the main beneficiaries.
2
Service Connection Charges for HV and EHV Connection Customers receiving HV and EHV connection shall pay the cost of the service connections to their intake equipment including cables, associated equipment and facilities to effect the connection of customer’s equipment to PowerGrid’s substation/network. The service connection shall cater for single contingency. Customers requesting for additional level of contingency above single contingency are required to pay for the full cost of such provision.
3
Dedicated Network/Substation The customer shall pay the full cost for all associated equipment and facilities under a dedicated network/substation scheme which the network capacity is intended to serve to its development exclusively.
▲
111
■ Appendix 36
STANDARD SERVICE CONNECTION CABLES
The type of service connection cables for terminating into a customer’s intake point for the applied load connected at the LV and 22kV level and the typical connection schemes are illustrated as follows: Voltage Level LV
Applied Load (kVA) Up to 15 16 – 45 46 – 75 76 – 140 141 – 180 181 – 230 231 – 280 281 – 460 461 – 560 561 – 1000 1001 – 1500* 1001 – 2000^ 2001 – 3000^ Up to 12750kW^ 12751 – 25500kW^ Pilot cables 1.5 mm2
22kV (HV)
Size of Cables 35mm2 35mm2 35mm2 120mm2 185mm2 300mm2 300mm2 2x300mm2 2x300mm2 7x500mm2 7x1000mm2 2 sets of 7x500mm2 3 sets of 7x500mm2 2 sets of 300mm2 2 sets of 2X300 mm2 5 pair
2Core 4Core 4Core 4Core 4Core 4Core 4Core 4Core 4Core 1Core 1Core 1Core 1Core 3Core 3Core
Type of cables Cu/XLPE/SWA/PVC Cu/XLPE/SWA/PVC Cu/XLPE/SWA/PVC Al/XLPE/SWA/PVC Al/XLPE/SWA/PVC Al/XLPE/SWA/PVC Cu/XLPE/SWA/PVC Al/XLPE/SWA/PVC Cu/XLPE/SWA/PVC Cu/XLPE/PVC Cu/XLPE/PVC Cu/XLPE/PVC Cu/XLPE/PVC Cu/XLPE/DSTA/PVC Cu/XLPE/DSTA/PVC Cu/PE/DSTA/PVC
For development whereby the service connection cables is to be supplied and installed by the customer, the LEW shall, in the event of a non-standard cable installation, seek approval from PG prior to installation. * applies to upgrading of applied load ^ There must be an electrical and mechanical interlocking bus coupler between each set of cables terminating into the customer’s switchboard as shown below :
LV Customer’s Switchboard 1001 – 2000kVA
Bus Coupler 7 x 500mm2 1Core
7 x 500mm2 1Core
Bus Coupler
Bus Coupler 7 x 500mm2 1Core
7 x 500mm2 1Core
7 x 500mm2 1Core
Bus Coupler
Bus Coupler 300mm2 3Core
HV Customer’s Switchboard Up to 12750kW
300mm2 3Core
2 x 300mm2 3 Core
Bus Coupler 2 x 300mm2 3Core
▲
112
LV Customer’s Switchboard 2001 – 3000kVA
HV Customer’s 2 x 300mm2 3Core Switchboard 12751 – 25500kW
Bus Coupler 2 x 300mm2 3Core
2 x 300mm2 3Core
HV Customer’s Switchboard 25501 – 38250kW Subject to PowerGrid’s approval
■ Appendix 37
CERTIFICATE OF COMPLIANCE
Particulars of Electrical Installation Name of Consumer
:
Address of Installation :
Electrical Installation Licence No : Approved load & Supply Voltage : Generator(s) Installed : ■
Volts
Rating :
kVA
Rating :
kVA
Standby generator No. of generator :
■
kW
Operated in parallel with PowerGrid’s network. No. of generator :
■
MSS Account No :
Not applicable
Certification by Licensed Electrical Worker I certify that the above-mentioned Electrical Installation complies with the requirements of the Electricity (Electrical Installations) Regulations 2002 and the relevant Singapore Standard Code of Practice. I further certify that the technical requirements as stipulated by the person responsible for turning on the switchgear which controls the supply of electricity to the said electrical installation have been complied with. I hereby request for the energisation of the supply line to the said Electrical Installation on
Name & Signature of LEW
Copy to : Market Support Services Licensee
Licence No.
(date).
Date
REF : E(EI)Reg5(2)
▲
113
■ Appendix 38 STATEMENT OF TURN-ON OF ELECTRICITY ELECTRICITY SUPPLY TO ___________________________________________________ (Name of Applicant)
AT________________________________________________________________________ (Address of Installation)
ELECTRICAL INSTALLATION LICENCE NO* : ____________________________________ APPLICATION NUMBER: ______________________________________________________ I agree that the above-mentioned electrical installation is suitable for connection to the electrical system. I certify that the supply line to the installation has been energised on _____________________________at ______________________. (date)
(time)
____________________________________
_____________
_________________
Name & Signature of PowerGrid’s officer
NRIC No.
Date
I acknowledge that the supply line has been energised on the date and time indicated above.
____________________________________
________________ _________________
Name & Signature of LEW requesting for energisation of supply line
Licence No.
Date
I acknowledge that the supply line has been energised on the date and time indicated above and confirm that I will be responsible for the operation of this electrical installation hereafter.
_______________________________________
_________________ _________________
Name & Signature of LEW responsible for the operation of the electrical installation*
Licence No.
Date
I acknowledge that the supply line has been energised on the date and time as indicated above.
__________________________________________ Name & Signature of Applicant or his representative
__________________ ___________________ NRIC / Passport No. Date
* Not Applicable for an electrical installation that is exempted from licensing
Original Copy – PowerGrid Ltd Pink Copy – LEW (Requesting) Yellow Copy – LEW (Operation) Green Copy – Applicant Blue Copy – MSSL White (last) Copy – File
► 114 REF: E(EI) REG R5(4)
■ Appendix 39
REQUIREMENTS FOR EXEMPT GENERATION FACILITY NOT EXCEEDING 1MW
The customer applying for an exempt generation facility is required to obtain PowerGrid’s approval and shall comply with the technical, safety & operational and commercial & legal requirements as follows: A)
Technical Requirements
1 2 3 4 5 6
real and reactive power/voltage output and voltage and frequency response times must be within agreed limits not contribute to the voltage unbalance, voltage fluctuation and harmonic content specified for the transmission network ensure that there is no interference to PowerGrid’s Equipment or any other directly or indirectly connected consumers. ensure adequate partitioning of the exempt generation facility equipment from PowerGrid’s equipment ensure that there is no fault level contribution exceeding 1.5kA to the distribution network where required by PowerGrid, install harmonic filtering circuit at the incoming switchboard of the service connection in compliance with the harmomics standard
B)
Safety & Operational Requirements
1 2 3
provide an interlocking and inter-tripping facility for the service connection that meets PowerGrid’s requirement fit exempt generation facility with reverse power relays to prevent export of power to the transmission system not operate the exempt generation facility in islanding mode i.e.the embedded generator must isolate itself from the distribution network when there is a fault/tripping on the latter or the customer’s installation (non-islanding protection) provide a synchronizing facility at the incoming switchboard of its service connection and ensure that any output is always synchronised with the distribution network
4
C)
Commercial & Legal Requirement The customer with an exempt generation facility shall :
1 2
pay standby use of system charges or any other charges approved by the EMA give an undertaking to the PowerGrid in its Connection Agreement indemnify the PowerGrid Ltd : i) for all losses and liabilities arising from any loss of sychronisation caused by any tripping or re-closing of any breakers in the transmission system and the exempt generation facility connected in parallel to the transmission system ; and ii) to indemnify PowerGrid against losses to third parties caused by impedance, disruption degradation interference or failure of transmission services to third parties caused by the system or works carried out on the transmission system. certify to PowerGrid that the exempt generation facility meet all conditions of the relevant legislation, regulation (including installation, fire and safety, noise and environment); conduct regular site tests and to notify the PowerGrid of the results allow PowerGrid to conduct inspection of, disconnect and enforce conditions in respect of the service connection if the exempt generation facility fails to meet any of the above requirements. undertake in its Connection Agreement with PowerGrid to resolve, at its own expense all third party complaints concerning the exempt generation facility(e.g.complaints due to noise, or aesthetic reasons); and use the service connection at its own risk to operate in parallel with its exempt generation facility.
3 4 5 6 7
▲
115
■ Appendix 40
LIST OF STANDARDS
IEC Standards IEC 60044-1 IEC 60044-1-am1 IEC 60044-2 IEC 60044-6 IEC 60060-1 IEC 60060-2 IEC 60060-2-am1 IEC 60076-1 IEC 60076-2 IEC 60076-3 IEC 60076-5 IEC 60076-8 IEC 60076-10 IEC 60099-4 IEC 60137 IEC 60141-1
IEC 60141-1-am1 IEC 60141-1-am2 IEC 60228 IEC 60228-am1 IEC 60230 IEC 60255-3 IEC 60255-5 IEC 60255-6 IEC 60255-8 IEC 60255-12 IEC 60255-13 IEC 60255-14 IEC 60255-16 IEC 60255-19 IEC 60255-23 IEC 60255-24 IEC 60273
▲
116
(1996-12) Ed. 1.0 Instrument transformers – Part 1 : Current transformers (2000-07) Ed. 1.0 Amendment 1 (2000-11) Consol. Ed. 1.1 (incl. am1) Instrument transformers – Part 2 : Inductive voltage transformers (1992-03) Ed. 1.0 Instrument transformers – Part 6 : Requirements for protective current transformers for transient performance (1989-11) Ed. 2.0 High-voltage test techniques – Part 1 : General definations and test requirements (1994-11) Ed. 2.0 High-voltage test techniques – Part 2 : Measuring systems (1996-03) Ed. 2.0 Amendment No.1 to IEC 60-2 (2000-04) Consol. Ed. 2.1 (incl. am1) Power transformers – Part 1 : General (1993-04) Ed. 2.0 Power transformers – Part 2 : Temperature rise (2000-03) Ed. 2.0 Power transformers – Part 3 : Insulation levels, dielectric tests and external clearances in air (2000-07) Ed. 2.0 Power transformers – Part 5 : Ability to withstand short circuit (1997-11) Ed. 1.0 Power transformers – Part 8 : Application guide (2001-05) Ed. 1.0 Power transformers - Part 10 : Determination of sound levels (2001-12) Consol. Ed. 1.2 (incl. am1 + am2) Surge arresters – Part 4 : Metal-oxide surge arresters without gaps for a.c. systems (1995-12) Ed. 4.0 Insulating bushings for alternating voltages above 1000V (1993-09) Ed. 3.0 Tests on oil-filled and gas-pressure cables and their accessories – Part 1 : Oilfilled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltages up to and including 500kV (1995-02) Ed. 3.0 Amendment No.1 (1998-08) Ed. 3.0 Amendment No.2 (1978-01) Ed. 2.0 Conductors of insulated cables (1993-01) Ed. 2.0 Amendment No.1 (1966-01) Ed. 1.0 Impulse tests on cables and their accessories (1989-06) Ed. 2.0 Electrical relays – Part 3 : Single input energising quantity measuring relays with dependent or independent time (2000-12) Ed. 2.0 Electrical relays – Part 5 : Insulation coordination for measuring relays and protection equipment – Requirements and tests (1988-12) Ed. 2.0 Electrical relays – Part 6 : Measuring relays and protection equipment (1990-10) Ed. 2.0 Electrical relays – Part 8 : Thermal electrical relays (1980-01) Ed. 1.0 Electrical relays – Part 12 : Directional relays and power relays with two input energising quantities (1980-01) Ed. 1.0 Electrical relays – Part 13 : Biased (percentage) differential relays (1981-01) Ed. 1.0 Electrical relays – Part 14 : Endurance tests for electrical relay contacts – Preferred values for contact loads (1982-01) Ed. 1.0 Electrical relays – Part 16 : Impedance measuring relays (1983-01) Ed. 1.0 Electrical relays – Part 19: Sectional specification: Electromechanical all-ornothing relays of assessed quality (1994-10) Ed. 1.0 Electrical relays – Part 23 : Contact performance (2001-05) Ed. 1.0 Electrical relays – Part 24 : Common format for transient data exchange (COMTRADE) for power systems (1990-03) Ed. 3.0 Characteristics of indoor and outdoor post insulators for systems with nominal voltages greater than 1000V
■ Appendix 40
IEC Standards continued IEC60186 IEC 60287-1-1 IEC 60287-1-2
IEC 60287-2-1 IEC 60287-2-2
IEC 60287-3-1 IEC 60287-3-2 IEC 60287-3-2-am1 IEC 60289 IEC 60298 IEC 60332-1 IEC 60354 IEC 60376 IEC 60502-1
IEC 60517 IEC 60517-am1 IEC 60521 IEC 60529 IEC 60651 IEC 60660 IEC 60687 IEC 60694 IEC 60722 IEC 60811-1-1
IEC 60840
Voltage Transformers (2001-11) Consol. Ed. 1.2 (incl. am1 + am2) Electric cables – Calculation of the current rating – Part 1-1 : Current rating equations (100% load factor) and calculation of losses – General (1993-12) Ed. 1.0 Electric cables - Calculation of the current rating – Part 1 : Current rating equations (100% load factor) and calculations of losses – Section 2: Sheath eddy current loss factors for two circuits in flat formation (2001-11) Consol. Ed. 1.0 (incl. am1) Electric cables – Calculation of the current rating – Part 2-1 : Thermal resistance – Calculation of the thermal resistance (1995-05) Ed. 1.0 Electric cables - Calculation of the current rating – Part 2: Thermal resistance – Section 2: A method for calculating reduction factors for groups of cables in free air, protected from solar radiation (1999-05) Consol. Ed. 1.1 (incl. am1) Electric cables – Calculation of the current rating – Part 3-1 : Sections on operating conditions – Reference operating conditions and selection of cable type (1995-07) Ed. 1.0 Electric cables - Calculation of the current rating – Part 3 : Sections on operating conditions – Section 2 : Economic optimization of power cable size (1996-10) Ed. 1.0 Amendment No.1 to IEC 287-3-2 (1988-05) Ed. 2.0 Reactors (1990-12) Ed. 3.0 A.C. metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to and including 52kV (1993-04) Ed. 3.0 Tests on electric cables under fire conditions – Part 1 : Test on a single vertical insulated wire or cable (1991-10) Ed. 2.0 Loading guide for oil-immersed power transformers (1971-01) Ed. 1.0 Specification and acceptance of new sulphur hexafluoride (1998-11) Consol. Ed. 1.1 (incl. am1) Power cables with extruded insulation and their accessories for rated voltages from 1kV(Um = 1,2kV) up to 30kV (Um = 36kV) - Part 1 : Cables for rated voltages of 1kV (Um = 1,2kV) and 3kV (Um = 3,6kV) (1990-10) Ed. 3.0 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above (1994-11) Ed. 3.0 Amendment No.1 (1988-03) Ed. 2.0 Class 0.5, 1 and 2 alternating-current watthour meters (2001-02) Consol. Ed. 2.1 (incl. am1) Degrees of protection provided by enclosures (IP Code) (2001-10) Consol. Ed. 1.2 (incl. am1 + am2) Sound level meters (1999-10) Ed. 2.0 Insulators – Tests on indoor post insulators of organic material for systems with nominal voltages greater than 1000V up to but not including 300kV (1992-06) Ed. 2.0 Alternating current static watt-hour meters for active energy (classes 0,2 S and 0,5 S) (2001-05) Consol. Ed. 2.2 (incl. am1 and am2) Common specifications for high-voltage switchgear and controlgear standards (1982-01) Ed. 1.0 Guide to the lightning impulse and switching impulse testing of power transformers and reactors (2001-07) Consol. Ed. 2.1 (incl. am1) Common test methods for insulating and sheathing materials of electric cables and optical cables - Part 1–1 : Methods for general application – Measurement of thickness and overall dimensions - Tests for determining the mechanical properties (1999-02) Ed. 2.0 Power cables with extruded insulation and their accessories for rated voltages above 30kV (Um = 36kV) up to 150kV (Um = 170kV) - Test methods and requirements
▲
117
■ Appendix 40
IEC Standards continued IEC 60859
IEC 60885-1 IEC 60885-2 IEC 60885-3 IEC 60947-1 IEC 60947-7-1 IEC 61000-4-2 IEC 61036 IEC 62098 IEC 62271-100 IEC 62271-102 IEC 60068 IEC 60068-1-am1 IEC 60068-2-3 IEC 60068-2-11 IEC 60068-2-11 IEC 60068-2-30 IEC 60068-2-30-am1 IEC 60068-2-67 IEC 60068-3-4 IEC 60068-4 IEC 60068-4-am1 IEC 60068-4-am2 IEC 61000-1-1 IEC 61000-1-2
IEC 62067
▲
118
(1999-07) Ed. 2.0 Cable connections for gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above – Fluid-filled and extruded insulation cables - Fluid-filled and dry type cable-terminations (1987-03) Ed. 1.0 Electrical test methods for electric cables. Part 1: Electrical tests for cables, cords and wires for voltages up to and including 450-750V (1987-03) Ed. 1.0 Electrical test methods for electric cables. Part 2 : Partial discharge tests (1988-07) Ed. 1.0 Electrical test methods for electric cables. Part 3 : Tests methods for partial discharge measurements on lengths of extruded power cables (2001-12) Consol. Ed. 3.2 (incl. am1 + am2) Low-voltage switchgear and controlgear – Part 1 : General rules (1999-08) Consol. Ed. 1.1 (incl. am1) Low-voltage switchgear and controlgear – Part 7 : Anciliary equipment – Section 1 : Terminal blocks for copper conductors (2001-04) Consol. Ed. 1.2 (incl. am1 + am2) Electromagnetic compatibility (EMC) – Part 4-2 : Testing and measurement techniques – Electrostatic discharge immunity test (2000-09) Consol. Ed. 2.1 (incl. am1) Alternating current static watt-hour meters for active energy (classes 1 and 2) (2000-11) Ed. 1.0 Evaluation methods for microprocessor based instruments (2001-05) Ed. 1.0 High-voltage switchgear and controlgear – Part 100 : High-voltage alternatingcurrent circuit-breakers (2001-12) Ed. 1.0 High-voltage switchgear and controlgear – Part 102 : High-voltage alternatingcurrent disconnectors and earthing switches (1988-06) Environmental testing. Part 1 : General and guidance (1992-04) Amendment No. 1 (1969-01) Environmental testing - Part 2 : Tests. Tests Ca: Damp heat, steady state. (1981-01) Environmental testing - Part 2 : Tests. Tests Ka: Salt Mist. (1999-12) Corrigendum 1. (1980-01) Environmental testing - Part 2 : Tests. Tests Db and guidance: Damp heat, cyclic (12 + 12-hour cycle) (1985-08) Amendment No. 1 (1995-12) Environmental testing – Part 2 : Tests – Test Cy: Damp heat, steady state, accelerated test primarily intended for components. (2001-08) Environmental testing – Part 3-4 : Supporting documentation and guidance – Damp heat tests (1987-09) Environmental testing. Part 4 : Information for specification writers – Test Summaries (1992-02) Amendment No. 1 (1994-03) Amendment No. 2 (1992-05) Electromagnetic compatibility (EMC) – Part 1 : General – Section 1: Application and interpretation of fundamental definitions and terms. (2001-06) Electromagnetic compatibility (EMC) – Part 1-2 : General – Methodology for the achievement of the functional safety of electrical and electronic equipment with regard to electromagnetic phenomena. (2001-10) Power cables with extruded insulation and their accessories for rated voltages above 150kV (Um = 170kV) up to 500kV (Um = 550kV) – Test methods and requirements
■ Appendix 40
British Standards BS EN 60051-1 (1999) [IEC 60051-1(1997)] BS 89-2 (1990) [IEC 60051-2 (1984)] BS 89-3 (1990) [IEC 60051-3 (1984)] BS 89-4 (1990) [IEC 60051-4 (1984)] BS 89-5 (1990) [IEC 60051-5 (1985)] BS 89-9 (1990) [IEC 60051-9 (1988)] BS 148 (1998) BS 159 (1992) BS EN 60076-1 (1997) BS 171-5 (1978) [IEC 60076-5 (1976)] BS EN 60060-2 (1995) BS 3938 (1973) BS 3941 (1975) BS EN 60214 (1998) BS 5207(1975) BS 5209 (1975) BS 5311(1996) BS EN 60947-4-1(2001) BS 5685-1(1979) BS 5685-2 (1986) BS 5685-3 (1986) BS 5685-4 (1986) BS 5685-5 (1987) BS 5685-8 (1991)
Direct acting indicating analogue electrical measuring instruments and their accessories. Definitions and general requirements common for all parts. Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for ammeters and voltmeters Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for wattmeters and varmeters. Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for frequency meters. Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for phase meters, power factor meters and synchroscopes. Direct acting indicating analogue electrical measuring instruments and their accessories. Recommended test methods. Specification for unused and reclaimed mineral insulating oils for transformers and switchgear. Specification for high-voltage busbars and busbar connections. Power transformers. General Power transformers. Specification for ability to withstand short circuit. High-voltage testing techniques. Measuring systems Specification for current transformers Specification for voltage transformers On-load tap changers Specification for sulphur hexafluoride for electrical equipment Code of practice for the testing of sulphur hexafluoride taken from electrical equipment High-voltage alternating-current circuit-breakers Specification for low-voltage switchgear and controlgear. Contactors and motor-starters. Electromechanical contactors and motor-starters Electricity meters. Specification for class 0.5, 1 and 2 single-phase and polyphase, single rate and multi-rate watt-hour meters. Electricity meters. Specification for single-phase coin operated prepayment flat rate and twopart tariff watt-hour meters of class 2 and fixed charge collectors of class 2. Electricity meters. Specification for meters having class 1 electro-mechanical maximum demand indicators. Electricity meters. Specification for class 3 var-hour meters. Electricity meters. Specification for input and output switching or logic arrangements for multirate registers for electricity meters. Electricity meters. Specification for impulse operated multiple registers for use with induction electricity meters. Monitoring and maintenance guide for mineral insulating oils in electrical equipment. Electrical relays. Specification for contact performance of electrical relays
BS 5730 (2001) BS 5992-1(1980) [IEC 60255-0-20 (1974)] BS 6231(1998) Specification for PVC-insulated cables for switchgear and controlgear wiring. BS EN 60044-2 (1999) Instrument transformers. Inductive voltage transformers [IEC 60044-2 (1997)]
▲
119
■ Appendix 40
Singapore Standards SS 318 (1987) SS 404 (1997) SS 404 (1997) SS 404 (2001) SS 404 (2001) SS 404 (2000)
SS ISO 9001 (2000) SS ISO 9004 (2000) CP 5 (1998) CP 10 (1993) CP 16 (1991) CP 19 (2000) CP 31 (1996) CP 33 (1996)
Current transformers for measurement and protection Power transformers Part 1: General Power transformers Part 2 : Temperature rise Power transformers Part 3: Insulation levels and dielectric tests and external clearances in air Power transformers Part 5 : Ability to withstand short circuit Power transformers Part 8 : Application guide SS 443 (1998) Part 1 : Power cables with extruded insulation and their accessories for rated voltages from 1kV (Um = 1.2kV) up to 30kV (Um = 36kV) – Cables for rated voltages of 1kV (Um = 1.2kV) and 3kV (Um = 3.6kV) SS ISO 9000 (2000) Quality management systems – Fundamentals and vocabulary Quality management systems – Requirements Quality management systems – Guidelines for performance improvements Code of practice for electrical installations Code of practice for the installation and servicing of electrical fire alarm systems Code of practice for earthing Code of practice for the installation and maintenance of emergency lighting and power supply systems in buildings Code of practice for installation, operation, maintenance, performance and constructional requirements of mains failure standby generating systems Code of practice for lightning protection
Other Standards IEEE C37.09 ANSI C37.09 (1999) IEEE 32 (1972) ISO 7-2 (2000) AEIC CS2 (1997) AEIC CS4 (1993) ASTM B187 (2000) ASTM B3 (2001)
▲
120
Test procedure for A.C high-voltage circuit breakers rated on a symmetrical current basis Neutral grounding devices, req term and test procedures Pipe threads where pressure-tight joints are made on the threads – Part 2: Verification by means of limit gauges Impregnated paper and laminated paper polypropylyne insulated cable high-pressure-pipe type Impregnated-paper-insulated-low and medium pressure self-contained liquid filled cable Standard specification for copper bar, bus-bar, rod and shapes Standard specification for soft or annealed copper wire
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