SNSwamy Posted February 11, 2008 Report Share Posted February 11, 2008 you have separate numerical relay for LV motor &HT motor.Can you use the LV motor numerical relay for HT motor protection without any modificationHT motor protection Link to comment Share on other sites More sharing options...
spkam Posted March 21, 2008 Report Share Posted March 21, 2008 I dont see any difference b/w LT and HT motor protection. I think same relay can be used following to be considered a) If u use the low imp. scheme for earth fault then u may have to recalculate the stabilizing resistor value Revision of the protection settings as per HT motor char. , fault currents at the bus c) CT PT ration as per the new set up Link to comment Share on other sites More sharing options...
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