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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why microprocessors are named as 8085 ,8086 etc? what's the reason for this???

15 Answers   Bhel, HCL,

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how to measure earth pit resistance

7 Answers   BARC, BYD Electronic, Construction,

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what is transformer tap change HT side and LT side

1 Answers   Alstom, Sodexo,

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what is the current limit of lighting arrester ?

1 Answers   ABB,

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we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan

0 Answers   RYK Mills,

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What is the output of a transformer..??

1 Answers   Jindal,

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. Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0

1 Answers  

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what is the formula to calculate the distance between one phase to another phase in single phase line and 3 phase line for different volt for example ; 33kv, 11kv ,22kv,230v

1 Answers   Suzlon,

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why synchronous motor has zero starting ?

8 Answers   NTPC,

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why AC voltage source are generate as 50 Hz ?

4 Answers  

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there are 3 transformers each of 1500 kva and one transformer of 1000kva for a 11 floor building . total otgoing kw is 4066 kw. i need an extra 260 kw .is there any provision for that? what is the max kw that can be connected with these transformers?

2 Answers  

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