We have one 500KVA transformer. We have tested REF relay and commissioned. After one and half year, due to some ground fault in one of the DB circuit Transformer tripped by REF relay. What will be cause and remedy. Please advise?

1 Answers  

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What is the technical name of minute currents that i have been produced in moving electrical objects?

2 Answers   ITC Infotech,

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STATE WORKING OF SF6 C.B.?

1 Answers  

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Whay you want to change your job.

1 Answers  

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Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

0 Answers  

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Wht ar the reason for low voltage on consumer side?

6 Answers  

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How can we calculate C10 rating of a bttery from c5 or c20 ratings??

1 Answers   Intel,

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How to calculate VCB rating for 33KV ,25 MW Power line?

0 Answers  

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how electrical earthing maintenance done in industry?

0 Answers   L&T,

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what happen if one of 3-phase line has a much higher load when we are using delta to star transformer? how we can over-come from that?

2 Answers   Getco,

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An AC Motor to give DC supply what happen the motor.whats the problem are create.

2 Answers  

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why there is 1 phase and 3 phase but not 2 phase and 4 phase?

3 Answers  

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