What is restricted earth fault protection ?
Answer / himanshu_dee
REF protection is applied on transformers in order to
detect ground faults on a given winding more sensitively
than when only using differential protection.
| Is This Answer Correct ? | 6 Yes | 0 No |
What is the difference between Analogue Addressable Systems and intelligent Addressable Systems
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if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer
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2 Answers Ozone Pharma, Sperry Plast Limited, Sterling,
During the main stator winding insulation testing (phase to ground)of 11kv alternator (Lerysomer) i found 0 and resistance with multimeter and found 20 killo ohm while the power cables are connected both end (Generator & VCB). In VCB PT (Potential transformer) are connected. Please any body explain that method of insulation is correct or not? also describe of PT connections
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