At what condition differential relay will act in
transformer and ht motor?

Answer Posted / syed azam shareef

If the cable is earthed or shorted with other cable ...in
that case diff relay acts.

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Control cables in S's will carry 1000v which is AC R DC? Pls answer meĀ 

1607


Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.

2904


when we decide to use soft starter drive or vfd drive in mcc to operate apump?

1538


What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

2302


What is sink and source?

680






What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?

541


How to calculate the size of earth cable to earth the neutral of UPS ?

1419


how is the incoming cable size calculated for a given current rating of a panel??

1443


why is using sensor?what is differece between photoelectric and proxmitty?

1530


ult of expression 'document.FrmQF.myem

1668


what is the relation between size of the anteena and wavelenghth of radiated wave

1730


DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?

2047


What is the ideal position cooling fan inside the dc motor?

1660


What are the internal and external faults?

624


what is meant by rotating magnetic filed

1537