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LCI , currents for differential protection?

Thread starter rayas91
Start date Dec 14, 2016

Status: Not open for further replies.

Dec 14, 2016

rayas91

Electrical

Hi friends,

I m at 1500 mw substation now.We try to make first fire of turbine..But during start up with LCI , I realized that currents were ot balanced for unit differential relay.

It seems B and C phases are swaped.Currents were enogh to see differential current, but I couldnt see any differential.It was Zero.

Is it because of LCI'motor effect or another something ??

THANKS.