GE P741, Technical Manual

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Commissioning P74x/EN CM/Na7
MiCOM P741, P742, P743 (CM) 10-45
CM
7 On-load Checks
Delete as appropriate (na = not applicable)
Test wiring removed? Yes / No / na
Disturbed customer wiring re-checked? Yes / No / na
7.1 Confirm current transformer wiring
Complete or delete as appropriate (na = not
applicable)
7.1.2 Current connections
CT wiring checked? Yes / No / na
CT polarities correct? Yes / No
Displayed current Primary / Secondary
Phase CT ratio ______________ / na
Currents: Applied value Displayed value
Ι
A
_______________A _____________A
Ι
B
_______________A _____________A
Ι
C
_______________A _____________A
Ι
N
_______________A /na _____________A /na
7.3 Differential current checked? Yes / No
8 Final Checks
Test wiring removed? Yes / No / na
Disturbed customer wiring re-checked? Yes / No / na
Test mode disabled? Yes / No
Circuit breaker operations counter reset? Yes / No / na
Current counters reset? Yes / No / na
Event records reset? Yes / No
Fault records reset? Yes / No
Disturbance records reset? Yes / No
Alarms reset? Yes / No
LED’s reset? Yes / No
Secondary front cover replaced? Yes / No / na
Commissioning Engineer: Customer Witness:
Date: Date: