Electrical Rotating Machine Repair

Electrical Rotating Machine Repair A printed or saved copy is an UNCONTROLLED copy. Check that it is the latest available version before use. Title:

ELECTRICAL ROTATING MACHINE REPAIR

Number:

ES-14-902-05

Version Number:

6.0

Date Revised:

10 July 2014

Owner:

Simon Orton

Authoriser:

Manoj Thakur

Reasons for Creating or Amending Document:

Full Review of Document

Actual Change Details:

Document comprehensively reviewed and amended (including Australian & CSBP Engineering Standards)

TABLE OF CONTENTS 1.

SCOPE ................................................................................................................................................... 3

2.

STANDARDS ........................................................................................................................................ 3

3.

SERVICE CONDITIONS .................................................................................................................... 4

4.

TECHNICAL REQUIREMENTS ....................................................................................................... 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18

5.

FRAME SIZE .................................................................................................................................... 4 INSULATION AND TEMPERATURE RISE .................................................................................. 4 TEMPERATURE DETECTORS ...................................................................................................... 4 WINDINGS ....................................................................................................................................... 5 ANTI-CONDENSATION HEATERS .............................................................................................. 5 BEARINGS AND LUBRICATION.................................................................................................. 6 SHAFTS ............................................................................................................................................ 6 VIBRATION AND BALANCE QUALITY ..................................................................................... 7 INITIAL INSPECTION .................................................................................................................... 7 DATA SHEETS ................................................................................................................................ 8 ASSEMBLY ...................................................................................................................................... 8 PAINTING ........................................................................................................................................ 9 IDENTIFICATION TAG .................................................................................................................. 9 REPAIR ORDER NUMBER TAG ................................................................................................. 10 RATING PLATE............................................................................................................................. 10 PERFORMANCE CHARACTERISTICS ...................................................................................... 10 DOCUMENTATION ...................................................................................................................... 10 QUALITY ASSURANCE ............................................................................................................... 10

TESTING ............................................................................................................................................. 11

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Electrical Rotating Machine Repair 5.1 6.

TESTS AT CONTRACTOR’S WORKS ........................................................................................ 11 SPARES MANAGMENT ................................................................................................................... 14

APPENDIX 1 - ELECTRIC MOTOR REPAIR DATA STATOR REWIND DATA .............................. 15 APPENDIX 2 - ELECTRIC MOTOR REPAIR DATA SHEET ............................................................... 16 APPENDIX 3 - TYPICAL MOTOR IDENTIFICATION TAG ................................................................ 18 APPENDIX 4 - TYPICAL MOTOR PURCHASE ORDER TAG ............................................................. 19

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Electrical Rotating Machine Repair

1.

SCOPE

This Standard defines the minimum requirements for the repair and testing of CSBP rotating electrical machines at the Contractor’s works. Standard replacement parts for equipment shall be readily available in Australia. The design shall minimise the number of precision alignments required for installation and maintenance.

2.

STANDARDS

Rotating electrical machines shall be designed, built, rated, tested and shall perform in accordance with the latest editions of the referenced Standards, State Authority Standards or Regulations , or other local regulating bodies having jurisdiction over this equipment. Repair works shall be accordingly carried out in compliance to these standards. The latest version of all referenced standards shall be applicable. All relevant sections or parts of a referenced standard shall be applicable. If the stipulations of this Standard and the drawings do not comply with the minimum requirements of the Statutory Regulations and Standards, the latter shall prevail. Where stipulations of this Standard and the drawings or data sheets are more exacting than the minimum requirements of the Statutory Regulations and Standards, the former shall prevail in the following order: 1.

Detail drawings or data sheets;

2.

General specification and standard drawings.

Australian Standards AS1081

Measurement of Airborne Noise Emitted by Rotating Electrical Machinery

AS60947.8

Low Voltage Switchgear & Control Gear – Control Units for Built-In Thermal Protection of Rotating Electrical Machines

AS1359

Rotating Electrical Machines - General Requirements

AS60529

Degrees of Protection provided by Enclosures for Electrical Equipment

AS2380

Electrical Equipment for Explosive Atmospheres – Explosive Protection Techniques

AS2625

Rotating and Reciprocating Machinery - Mechanical Vibration

AS60079

Electrical Equipment for Explosives Atmospheres – Selection, Installation and Maintenance

AS1824

Insulation Coordination

AS2700

Colour Standards for General Purposes

AS/NZS3800

Electrical Equipment for Explosive Atmospheres - Overhaul and Repair

AS4307

Rotating Electrical Machines - Repair and Overhaul

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Electrical Rotating Machine Repair AS600034

Rotating Electrical Machines

AS2729

Rolling Bearings – Dynamic Load Ratings and Rating Life

CSBP Engineering Standards ES-14-101-12

Technical Data Sheets - Electrical, Instrument & Mechanical

ES-14-102-12

Protective Coatings

ES-14-102-16

Site Information – Kwinana

ES-14-102-09

Labels and Signs – Plant and Equipment

EP-08-030-37

Manufacturer Data Report

3.

SERVICE CONDITIONS

All LV Motors intended for service at CSBP shall be suitable for connection to a 415 or 440 volt, 3 phase, 50Hz supply and operate in an ambient temperature of 40oC at an altitude less than 1000m. The motors shall be suitable for operation under the service and operating conditions outlined in AS1359.101, and at the environmental conditions as stipulated in CSBP Standard ES-14-102-16 and any accompanying data sheet. The repairs supplied shall be suitable for heavy industry application, with extensive field proven service in similar applications.

4.

TECHNICAL REQUIREMENTS

4.1

FRAME SIZE

Frame sizes shall be in metric dimensions to AS60034 or AS1359 Part 10.

4.2

INSULATION AND TEMPERATURE RISE

Motor windings shall be provided with minimum of Class F insulation in accordance with referenced standards, and shall be of vacuum-pressure-impregnated (VPI) construction. Hot double dipping in lieu of vacuum pressure impregnation for motors 37 kW or larger shall be subject to approval by the Superintendent. The design temperature rise shall not exceed the limits set for Class B insulation in accordance with referenced standards.

4.3

TEMPERATURE DETECTORS

Where fitted, thermistors shall give Class 1 protection with reference temperatures in accordance with AS 60947-8. All thermistors shall be 100 ohm positive temperature coefficient (PTC).

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Electrical Rotating Machine Repair The motor thermistors shall be as recommended in AS1023 for Class B insulation with a trip point of 140°C. This shall apply to both sets. All thermal detectors shall be embedded in the motor windings during manufacture except where the Superintendent gives approval in writing in which case the thermal detectors may be bonded to the hottest spot on the top section of the stator coil. Where the motor is rated for use in hazardous areas then thermistors shall not be bonded externally to the stator windings except where specifically permitted by the certificate of compliance. In general thermistors shall be fitted as follows; 4.3.1

LV Motors Rating: < 7.5 kW

Where it is found that a motor of less than 7.5kW is already fitted with thermistors then in this case thermistors shall be maintained and replaced if necessary during repairs. 4.3.2

LV Motors Rating: ≥ 7.5 to 37 kW

All LV Motors rated at 7.5kW and up to 37kW inclusive shall be provided with three PTC thermistor sensors, one per phase. 4.3.3

LV Motors Rating: ≥ 45 to 190 kW

All LV motors rated at 45kW and up to and including 190kW shall be provided with two sets of PTC thermistor sensors, two per phase. 4.3.4

LV Motors Rating: ≥ 200 kW

All LV motors rated at 200kW and above shall be fitted with six resistance temperature detectors (RTD) included in the stator windings (two per phase). The resistance temperature detectors shall be of the three-wire type, category 2 with a resistance of 100 ohms at 0°C. The nine leads shall be brought out to a terminal block in a terminal box fitted to the body of the motor adjacent to the main terminal box. All cabling shall be marked so that each set is identifiable.

4.4

WINDINGS

All LV and HV motor windings shall be Delta connected unless otherwise specified. The burning out of windings shall be carried out within a temperature-controlled environment. The maximum temperature permitted shall be 350°C

4.5

ANTI-CONDENSATION HEATERS

Where fitted, anti-condensation heaters shall be checked for operation and repaired/replaced if necessary. Space heaters shall be nominally rated for 240 VAC.

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Electrical Rotating Machine Repair 4.6

BEARINGS AND LUBRICATION

Bearings shall be replaced with the size, form and tolerance as per the motor manufacturer’s specifications or as specified on CSBP’s motor data sheet. Bearings shall be selected to give a minimum life expectancy of forty eight months. Unless specified otherwise, motors shall be provided with grease lubricated deep groove ball bearings or alternatively deep groove ball bearing on the non-drive end with roller bearings on the drive end. The bearings shall be double shielded and either sealed for life or fitted with a grease flush through relief system. Where motors 185 kW or larger are intended to be used in conjunction with VSD's, but excluding any motor intended for use in hazardous areas, then the Supplier shall employ a scheme to limit circulating currents between the rotor and the frame. Such schemes may include providing electrical insulation at the non-drive end and fitment of earthing brushes on the shaft at the drive end. Where earthing brushes are fitted they shall be shrouded to prevent direct access by personnel or airborne contaminants. Where other than insulated bearings/housings coupled with earthing brushes are used, full details of the proposed scheme shall be highlighted by the Supplier in the motor repair sheet. 4.6.1

Bearing Type

Motor bearings shall be of a sealed type only from reputable and proven manufacturers: 4.6.2

Lubrication Type

All lubrication products shall be to the manufacturer’s requirements Bearing lubrication shall use Lithium base type grease with anti-oxidant, anti-wear and anti-rust additives with a specification equal to or better than Shell Alvania RL3. All grease nipples used are to be of the round button type or equivalent. It shall be possible to regrease the bearings in safety without stopping the motor. Designs requiring re-greasing at intervals of less than 4,000 hours are not acceptable.

4.7

SHAFTS

Shafts shall be straightened by heating or jacking such that shaft eccentricity at rated speed shall be within the ranges specified by the manufacturer. The journal or seal areas shall be finish-machined to a standard size set by the bearing manufacturer to accept the bearing or seal. Knurling, peening or adhesives shall not be used as a means of retaining bearings to the shaft. Shaft extensions, keyways and keys shall be in accordance with manufacturer specifications. The shafts of all motors shall be drilled and tapped in accordance with AS1359-101. The tapped hole shall be plugged with a grub screw and a suitable adhesive such as “Loctite” shall be used to ensure the grub screw remains in place.

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Electrical Rotating Machine Repair Note:

4.8

Motors that have stepped shafts shall not be drilled and tapped.

VIBRATION AND BALANCE QUALITY

All motors shall be dynamically balanced before leaving the Contractor’s works. Rotors shall be statically and dynamically balanced to commercial limits. Specially balanced motors shall be so identified on the rating plate. Rotors shall be free from excessive axial thrust. The balance quality shall be in accordance with values specified in AS2625.2.

4.9

INITIAL INSPECTION

The Contractor shall carry out an initial inspection for superficial damage following receipt of a machine at the Contractor’s works During disassembly of a machine and, prior to the commencement of repair, preliminary checks shall be carried out that include at least the following: a.

Megger test windings and record results. Note condition of windings and record findings.

b.

Inspect the following for mechanical damage: • End shields • Stator housing • Shaft extension • Mounting feet/flange • Terminal box housing • Fan cowling • Cooling fan Check bearing fit - record type.

c. d.

Following removal of rotor, check rotor bars, shorting rings for cracks or distortion, check rotor laminations for deformation, e.g. poling. For wound rotors, check: winding condition, slip rings/commutator, connections, and laminations.

e.

Check and establish winding condition.

f.

Check stator laminations for damage.

g.

Check material of fan cowling. If made of plastic or fibreglass then remove and discard.

h.

Check cast iron fans for evidence of cracking and also use of rivets to repair the fan or to affix balance weights. When cracking is found or rivets have been used then the fan shall be discarded.

i.

If fitted with an eye bolt, remove the bolt and clean out the threads of the stator frame/eye bolt with a wire brush and re-tap/die if necessary. Visually inspect the hole for signs of excessive corrosion or cracking which indicates that an eye bolt must not be installed. If the eye bolt hole is OK but the eye bolt condition is poor, has incorrect threads or incorrect thread length, then discard and re-supply a new eye bolt. Record findings on the Motor Repair Data Sheet.

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Electrical Rotating Machine Repair 4.10

DATA SHEETS

All rotating electrical machines shall be repaired as per the manufacturer’s specification and in accordance with any additional technical details, specifications or modifications as indicated on Motor Data Sheets or accompanying drawings. The above shall be supplied by the Responsible Officer and shall include, where possible, copies of previous history sheets complete with all detail. Manufacturer’s data shall also be included where available.

4.11

ASSEMBLY

4.11.1 Machined Faces Machine faces on end plates and bearing housings shall receive a rust preventative film such as Tectyl 506 or similar approved product. 4.11.2 Shaft Extension Shaft extension is to be coated with a rust preventative film (as per 4.11.1) that can be easily removed with solvent. 4.11.3 Gaskets Gaskets between terminal box and motor carcass are to be made with Neoprene cork or equivalent approved type of appropriate thickness to prevent the ingress of chemicals. 4.11.4 Shaft Seals Shaft seals, where fitted, shall be replaced as per the manufacturer’s specification or as specified on the CSBP Motor Data Sheet. Machining modifications for seals, if required, will be specified on a separate CSBP drawing. 4.11.5 Cooling Fans and Housings Replacement fans for Hazardous Area Motors shall be as per manufacturer’s specifications. Replacement fan housings shall be either cast iron or pressed steel and painted to CSBP specifications. Note:

Plastic or fibreglass fan housings shall not be used.

4.11.6 Cable Termination Leads between stator slip-ring or commutator brush connections and terminal box/boxes shall be run in stranded tinned copper conductor silicon rubber glass braid temperature rated 200°C or CSBP approved equivalent. Cables shall, in all cases be flexible. Where terminal posts are not fitted, cables shall be left unlugged for “on site” termination. ES-14-902-05 Version No. 6.0

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Electrical Rotating Machine Repair 4.11.7 Eye Bolts Based on the initial inspection, if the eye bolt hole was determined to be unsuitable for an eye bolt to be fitted then a standard bolt shall be installed into the hole. The threads shall be coated with anti-seizing grease. If the initial inspection indicated that the motor frame is not expected to fail if lifted using the eye bolt then anti-seizing grease shall be applied to the threads and the eye bolt installed. Once installed, then the integrity of the eye bolt shall be tested. The test shall require the motor to be lifted by the eye bolt and then additional weight equal to half the motor weight added. The weight applied and the result of this test shall be recorded on the Motor Repair Data Sheet. On completion, a tag, duly completed with the name of the tester and the date, shall be affixed to the eye bolt stating:"Eye bolt tested by:- ………………… Date:- ..…………"

4.12

PAINTING

Repaired motors shall have surface treatment applied to external surfaces in accordance with CSBP Engineering Standard Protective Coatings (ES-14-102-12) - System D. Colour shall be as follows: a.

Metric, non-hazardous rated: • AS2700S G13 Emerald Green

b.

Metric, hazardous rated (Ex ‘e’, Ex ‘n’, Ex ‘d’): • AS2700S X15 Orange

c.

Imperial, non-hazardous rated: • AS2700S N53 Blue Grey

d.

Imperial, hazardous rated: • AS2700S N53 Blue Grey with two stripes 100mm wide colour X15 Orange around stator.

Note:

4.13

Where stators have been coated with varnish due to the re-varnishing of windings then, unless otherwise directed, the Topcoat of paint applied to the stator will be sufficient. All other parts including end shields and fan cowlings will be painted as required by this Standard.

IDENTIFICATION TAG

Prior to abrasive blast cleaning and painting remove motor identification tag and replace after painting ensuring correct tag is re-fitted to motor. In the event that a motor has no tag fitted then the Contractor shall supply and fit a tag in accordance with the details contained in Appendix 3. The tag shall be mounted generally on the opposite side to the terminal box on a flat surface centred between the motor fixing centres towards the base.

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Electrical Rotating Machine Repair The number shall be nominated in the Purchase Order.

4.14

REPAIR ORDER NUMBER TAG

Following repairs the Contractor shall supply and fit a tag in accordance with Appendix 4 to the repaired motor. The Contractor shall stamp on the tag the date of the repairs and the Purchase Order number.

4.15

RATING PLATE

Prior to abrasive blast cleaning and painting remove motor rating plate and replace after painting. When the rating plate is missing or illegible then the Contractor shall supply and fit a stainless steel plate containing all information specified in AS1359 fixed by means of stainless steel threaded machine screws, rivets or pins. Rating plates shall be attached to the motor frame and not to terminal box covers. Rating plates shall be in a position where they can be easily and safely read while the motor is running. Where a motor is found to be of Imperial standard then the word “Imperial” shall be included on the plate. All fixings shall be of 316 grade stainless steel.

4.16

PERFORMANCE CHARACTERISTICS

Each repaired Motor shall give similar performance characteristics to the original Motor. Noise levels shall be measured according to the A-weighted sound power scale based on one metre distance. The no-load noise level shall not exceed 82dBA except in the case where the manufacturer has tested the motor at full load and can certify that the noise level does not exceed 85dBA under these conditions.

4.17

DOCUMENTATION

The Contractor shall supply the following information for each repaired motor as appropriate: a. b. c.

Electric Motor repair data as listed in Appendix 1. Electric Motor repair data sheet Appendix 2. Hazardous Area Motor repair date as per AS/NZS3800in addition to (b) above.

4.18

QUALITY ASSURANCE

The Vendor shall maintain a quality assurance system complying with the requirements of ISO9001/AS3901/AS3902 or an approved equivalent standard.

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Electrical Rotating Machine Repair 5.

TESTING

All LV and HV motors shall be subject to Routine Check Tests in accordance with AS1359, after repairs and prior to dispatch. The Client reserves the right to witness all tests. The Client shall be notified, in writing, not less than two (2) weeks prior to commencement of all final testing to be carried out. Each motor shall be factory tested to prove that it is free from mechanical and electrical defects. An inspection and test plan shall be submitted for approval. The contractor shall provide certified evidence that the following tests have been carried out. Such evidence shall include the voltage levels at which tests have been conducted.

5.1

TESTS AT CONTRACTOR’S WORKS

The following tests shall be carried out at the Contractor’s works. 5.1.1

LV Squirrel Cage Motors

a.

b. c. d. e. f.

Resistance measurement - at ambient temperature: • Phase to earth. • Phase to phase insulation resistance. • Stator winding resistance. • Thermistor resistance. • Resistance temperature detectors. Short circuit test (locked rotor). No load test. High voltage test as per AS1359. Balance quality. RPM at nameplate specified frequency.

5.1.2

LV Slipring Motors

a.

Resistance measurement - at ambient temperature: • Phase to earth. • Phase to phase insulation resistance. • Stator winding resistance. • Thermistor resistance. • Rotor winding and slipring to earth. • Rotor winding resistance. • Brush holders to earth. • Resistance temperature detectors. Brush tension. Rotor volts - open circuit. Stator and rotor current - locked rotor (short circuit test). No load test. High voltage test as per AS1359. Balance quality.

b. c. d. e. f. g.

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Electrical Rotating Machine Repair h.

RPM at nameplate specified frequency.

5.1.3

HV Motors Squirrel Cage and Slipring

a.

b. c. d. e. f. g. h. i. j.

Resistance measurement - at ambient temperature: • Phase to earth. • Phase to phase insulation resistance. • Stator winding resistance. • Thermistor resistance. • Rotor winding and slipring to earth. • Rotor winding resistance. • Brush holders to earth. • Polarisation Index. Brush tension. Rotor volts - open circuit. Stator and rotor current - locked rotor (short circuit test). No load test. Check phase sequence and terminal markings. High voltage test. Test all accessories for correct function. Balance quality. RPM at nameplate specified frequency.

5.1.4

DC Motors and Generators

a.

Resistance measurement - at ambient temperature. 1.

b. c. d. e. f. g.

Field insulation resistance. (a) Shunt (b) Series (c) Interpole 2. Field resistance (a) Shunt (b) Series 3. Commutator to earth 4. Commutator between segments 5. Brush gear to earth Stall current test - with shunt field open circuit. Overspeed and winding test per AS1359. Tacho volts per revolution. Commutation tests per AS1359. Balance quality.. RPM at nameplate rated voltage and current.

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Electrical Rotating Machine Repair 5.1.5

AC Generators - LV

a.

Resistance measurement - at ambient temperature. • Phase to earth. • Phase to phase insulation resistance. • Auxiliary winding resistance. • Auxiliary windings to earth. • Auxiliary windings to phase winding insulation resistance. • Thermistor resistance. • Rotor winding resistance. • Rotor winding and sliprings to earth. • Brushless alternator rotor resistance to be taken before connection to diodes. • Exciter components applicable to particular machine. High voltage test as per AS1359. Balance quality. Rotor balancing to be carried out prior to final assembly of machine.

b. c. Note:

The Contractor shall perform the following tests only if machine construction permits. If the Contractor is unable to perform these tests, then CSBP is to carry out the tests when recommissioning the unit after final assembly.

d. e. f. g. h.

Brush tension - slipring and DC exciter machines. No load test. Full load test. Momentary overload - AS1359 Overspeed test - AS1359.

5.1.6

AC Generators - HV

a.

Resistance measurement - at ambient temperature:

b. c. d. e.

• Phase to earth. • Phase to phase insulation resistance. • Auxiliary winding resistance. • Auxiliary winding to earth. • Auxiliary windings to phase windings insulation resistance. • Thermistor or thermocouples resistance and continuity. • Rotor winding resistance. • Rotor winding to earth. • Sliprings to earth (where fitted). • Polarisation Index. High voltage test per AS1359. Balance quality. Check phase sequence and terminal markings. Machine shall be subjected to full commissioning tests on site.

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Electrical Rotating Machine Repair 6.

SPARES MANAGMENT

All High Voltage rotation spares are kept in the stores project warehouse. These motors should be covered or sealed if possible with their anti-condensation heaters connected to a temporary power supply. At 6 monthly intervals the shaft should be rotated 60 to 90 degrees.

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Electrical Rotating Machine Repair

APPENDIX 1 - ELECTRIC MOTOR REPAIR DATA STATOR REWIND DATA Number of slot

:

Number of groups

:

Number of coils per group

:

Overhang of winding DE

:

Overhang of winding NDE

:

Type of winding

:

Connections

:

Size of wire

:

Coil pitch

:

Number of turns

:

Connection cables

:

Number of poles

:

Slot liner insulation

:

Type dimensions

:

Intercoil insulation

:

Shape dimensions

:

Inter group insulation

:

Shape dimensions

:

Slot wedges

:

Shape dimensions

:

Coil former

:

Shape dimensions

:

Note:

The Contractor shall complete this schedule for motors of 200kW capacity inclusive and larger. The schedule shall be forwarded to the Company at time of dispatch of the repaired motor.

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Electrical Rotating Machine Repair APPENDIX 2 - ELECTRIC MOTOR REPAIR DATA SHEET Manufacturer: Contractor: Serial No.: Contractor Ref. No.: Model No.: CSBP P.O. No.: Type: CSBP Item No.: Output kW: CSBP EWN: Voltage/Phase/Hz: Amps Sator: Frame: Bearing No.: Insul/Class Pole/RPM: DE: Voltage Rotor: Mounting: NDE: Amps Rotor: Duty Cycle: Seals No.: Insul/Class Rotor: IP Rating: DE: Connection: NDE: Shaft: Standard Tapped Stepped Ex ‘n’ Haz/Area Rating: Ex ‘e’ Ex ‘d’ WORK PERFORMED Yes No Unknown Has Motor Been Previously Rewound? Yes No Eye Bolt Hole Suitable for Re-Use? New Bearing NDE New Bearing DE Rewind Armature Repair Bearing HSE DE Repair Bearing HSE NDE Skim Commutator Replace Vee Seal NDE Replace Vee Seal DE Undercut Commutator Replace Fan Replace Fan Cowling New Brushes Balance Fan Balance Rotor Repair Rotor Shaft Full Spec Paint Revarnish Stator Top Coat Spec Paint New Leads New Lugs Motor weight _______ kg Eye Bolt Test _______ kg Rewind Stator Replace Thermistor Sets 1 2 Other Repairs (specify) Repairs Certified By:

Signed

MOTOR TESTING All insulation resistance readings to be of one minute duration. STATOR ROTOR/ARMATURE INSULATION RESISTANCE INSULATION RESISTANCE A-E: Sliprings/Commutator: B-E: To Earth: C-E: A-B: WINDING RESISTANCE A-C: Between Sliprings B-C: A-B: B-C: WINDING RESISTANCE C-A: A1-A2: B1-B2: NO LOAD TEST RUN-AMPS C1-C2: A: B: THERMISTOR RESISTANCE C: Set 1 Ohms: rpm: Set 2 Ohms:

Date

/

Screwed

/

FIELD INSULATION RESISTANCE Shunt to series: Shunt to earth: Series to earth: I/pole to earth: FIELD RESISTANCE Shunt: Series: VIBRATION TEST DE Bearing mm/sec: Horizontal: Vertical: Axial: NDE Bearing: Horizontal: Vertical: Axial:

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Electrical Rotating Machine Repair Test Certified By:

Signed

Date

ES-14-902-05 Version No. 6.0

/

/

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Electrical Rotating Machine Repair

APPENDIX 3 - TYPICAL MOTOR IDENTIFICATION TAG

Material Stainless steel, grade 316, 2mm thick sheets. Numerals Gothic 12mm high x 1.5mm wide x 1mm deep and centred to plate width. Fill numerals to 1mm depth, with Black two-part Epoxy Paint. Finish Ensure tag is smooth, clean and free from burrs and sharp edges. Fixings 4mm diameter x 10mm long, 316 stainless steel round-head screws. Drill and tap to suit. Generally tags will be mounted in the vertical plane on the opposite side to the terminal box and centred between feet.

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Electrical Rotating Machine Repair

APPENDIX 4 - TYPICAL MOTOR PURCHASE ORDER TAG

ORDER NO.

DATE

ORDER NO.

DATE

Material Stainless steel, grade 316, 0.4mm thick sheet. Letters Times New Roman. Finish Stainless steel letters, black epoxy background. Fixings Use two (2) off stainless steel ’U’ drive pins. Generally the Tag will be mounted adjacent to the Motor Identification Tag. Dimensions Long = 80mm Broad = 40mm

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