we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.

3 Answers   CFCL,

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Can you any one explain application of buccholz relay operation and pressure relif device operation of power transformer

0 Answers  

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what is the meaning of harmonic in AC waves and when which are prduce and what is the effects on line and give any other information about harmonics

1 Answers  

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What is the maximum load of 240mmsequre single core cable can carry?

1 Answers  

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If genrator not build up voltage , How u can Manually Excite ?

2 Answers  

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What is the effect of positive feedback on stability of the system?

0 Answers  

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why current coil has less number of turns compared to pressure coil?

8 Answers   Airtel,

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In Power Line Communication (PLC) the wave trap is used to block communication signals from entering neighboring lines. My question is this: Why do they allow for different filtering arrangements on these wave traps? Isn't it always going to be a low pass filter since we want the power frequency to go through, and the comm signal blocked?

0 Answers  

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What are the various methods for effecive earthing in a factory in a rocky terrain, where soil resistivity is extraordinarily high? The usual method of 3 m deep earth pits is not serving the purpose.

4 Answers  

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transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?

0 Answers   Bhel,

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whate is aelectrical power fector for exampal

8 Answers  

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what will happen when square wave is fed into input side of 3kva transformer and what you will get on output side.

3 Answers   Blue Star,

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