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GE P742

GE P742
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Commissioning
P74x/EN CM/Na7
MiCOM P741, P742, P743
(CM) 10-39
CM
Delete as
appropriate
Have all relevant safety instructions been
followed?
Yes / No
4 Product Checks
4.1 With the relay de-energised
4.1.1 Visual inspection
Relay damaged? Yes / No
Rating information correct for installation? Yes / No
Case earth installed? Yes / No
4.1.2 Current transformer shorting contacts close? Yes / No / Not checked
4.1.3
Insulation resistance >100M at 500V dc
Yes / No / Not tested
4.1.4 External Wiring (na = not applicable)
Wiring checked against diagram? Yes / No
Test block connections checked? Yes / No / na
4.1.5 Watchdog Contacts (auxiliary supply off)
Terminals 11 and 12 Contact closed? Yes / No
Contact resistance
______/Not measured
Terminals 13 and 14 Contact open? Yes / No
4.1.6 Measured auxiliary supply _____________V ac/dc
4.2 With the relay energised
4.2.1 Watchdog Contacts (auxiliary supply on)
Terminals 11 and 12 Contact open? Yes / No
Terminals 13 and 14 Contact closed? Yes / No
Contact resistance
______/Not measured
4.2.2 Date and time
Clock set to local time? Yes / No
Time maintained when auxiliary supply removed? Yes / No
4.2.3 Light emitting diodes
4.2.3.1 Alarm (yellow) LED working? Yes / No
Out of service (yellow) LED working? Yes / No

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