Download Pre-commissioning ITR

Pre-commissioning Checklist
Primary Systems - Substation
Instrument transformers physical checks and tests
Post current transformers; bar primary and current transformers and voltage transformers
Substation
Equipment no.
Manufacturer
Voltage
Rating(s)
Serial no.
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Performed by
Service no.
Date
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1. Visual inspection – Post CT and VTs
Action/check
Acceptable criteria
Results
No cracks or defects
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All control cables wiring are correctly
labelled
Labelling is correct
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Control cabling and terminations are
correctly marked and complete.
Marking is complete and
correct
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Check secondary windings of all CTs
connected - Refer to PMI 4110 and
PDI 4003
Correct
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Check all cable terminations for tightness
Terminations are tight
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Check for any oil leaks (oil filled CTs and VTs).
No oil leaks
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Oil level to mark
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Terminal marking is complete
and correct
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Inspect for cracks or other defects
Check oil level in oil filled current
transformers.
Verify terminal markings are correct
Initials
2. Visual inspection – bar primary and ring CT
Action/check
Acceptable criteria
Results
No cracks or defects
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All control cables wiring are correctly
labelled
Labelling is correct
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Control cabling and terminations are
correctly marked and complete.
Marking is complete and
correct
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Check secondary windings of all CTs
connected - Refer to PMI 4110 and
PDI 4003
Correct
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Terminations are tight
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Terminal marking is complete
and correct
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Inspect for cracks or other defects
Check all cable terminations for tightness
Verify terminal markings are correct
FAE 3406 June 2015
SDI 535
Page 1 of 3
Initials
3. Oil quality and DGA
Action/check
Check manufacturer’s certificate of oil quality
and DGA.
Note: Oil shall be re-tested at site, if the oil
quality is doubtful.
Acceptable criteria
Oil quality in tank is in
accordance with ETS 0009.
Results
Initials
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4. Electrical tests – bar primary and ring CT and post CTs
Action/check
Acceptable criteria
Results
Polarity test
(as specified in PMI 4110 and PDI 4003)
Serviceable
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Ratio test
(as specified in PMI 4110 and PDI 4003)
Serviceable
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Perform magnetising test on CTs
(as specified in PMI 4110 and PDI 4003)
Serviceable
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Acceptable criteria
Results
against primary busbar phasing.
As specified in PMI 4110 and PDI 4003
Serviceable
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Polarity test
Serviceable
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Ratio test
Serviceable
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Record results
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Initials
5. Electrical tests – VTs
Action/check
Initials
Voltage phasing - Identify phasing of VTs
Measure resistance primary and secondary
fuses
6. Functional checks for all types of CTs and VTs
Action/check
Acceptable criteria
Results
Serviceable
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Action/check
Acceptable criteria
Results
Perform power-frequency withstand voltage of
2kV for 1 min, given as follows:

All new wiring installed at site.

All wiring not tested for PFWV in factory.

All wiring disconnected and removed for
transport.
Note: If wiring has to be taken off or if electronic
devices are in circuits, these circuits shall not be
tested).
No disruptive discharge
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Check functionality of all associated
electrical circuits as specified in PMI 4110
and PDI 4003
Initials
7. Electrical tests – VTs
FAE 3406 June 2015
SDI 535
Page 2 of 3
Initials
Conducted/
tested/inspected
by and sign
FAE 3406 June 2015
Service no.
Witnessed by
and sign
SDI 535
Service no.
Reviewed/
reported by
and sign
Service no.
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