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UNRISTRICTED EARTH FAULT MICOM P120

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SRA007

SRA007

Electrical
Joined
Jan 25, 2012
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GB
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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
 
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What primary settings do you want to program into the relay, and what is your CT ratio?
 
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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.
 
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My CT ratio is 150/5
 
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