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Earth fault relay

Earth fault relay

Earth fault relay

(OP)

Hi Guys,

I need a help in  looking for a procedure on how to set an earth fault relay
What are parameters needed, (eg. short circuit fault, etc..)

Thanks.

 

RE: Earth fault relay

I think you should start asking:
- earth fault current value
- grounding system (low R, high R, Peterson coil)
- CT connection (core CT or serial connection of the phase CTS)
- CT data (ratio)
- system configuration (voltage level, how many parallel branches, branches lengths)
You could need an earth directional relay
 

RE: Earth fault relay

As AMBMI saied.
More information needed for recommend something.
Best Regards.
Slava

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