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UNRISTRICTED EARTH FAULT MICOM P120

UNRISTRICTED EARTH FAULT MICOM P120

UNRISTRICTED EARTH FAULT MICOM P120

(OP)
friends
I am working with micom p120 relays , and have to produce the UNRISTRICTED EARTH FAULT settings. could anybody please let me know how to calacuate the settings.
Regards
SRA007

RE: UNRISTRICTED EARTH FAULT MICOM P120

What primary settings do you want to program into the relay, and what is your CT ratio?

RE: UNRISTRICTED EARTH FAULT MICOM P120

For MiCOM P120, as all so-said P20 range, setting is made related to In ( e.g. 0.1 In for 10% threshold).
For information, MiCOM P120 ( as well as other MiCOM) belongs now to Schneider Electric.

RE: UNRISTRICTED EARTH FAULT MICOM P120

(OP)
My CT ratio is 150/5

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