In PT the coil is wound on?

3 Answers   DVC,

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why we define potections of Tourbo generator in Class A & B.

1 Answers   GIL,

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How to calculate Voltage regulation of 22 KV Over head Line.

0 Answers  

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EXPLAIN METOD OF IMAGE OF TRANSMISSION LINE/ WHAT ARE ITS PRACTICAL APPLICATION?

0 Answers   Coal India,

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Transformer calculation

1 Answers   Aramco, LMW Lakshmi Machine Works Limited,

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A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.

0 Answers   Ispat, Red Bull,

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Why transformer making sound during operations?

2 Answers  

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How to calculate the cable size for particular load

2 Answers   Knight Frank,

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if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.

2 Answers   Jakson,

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For high voltage and low current Circuit Breaker preferred is vacuum circuit breaker.why?

1 Answers  

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If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.

0 Answers   CCP,

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We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

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