How I calculate the ELCB for circuit breakers?

0 Answers  

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what is high - pot test. what's its use?????

0 Answers  

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at what basis/standard we have to arrive the current density of aluminium/ copper in busbar?

0 Answers   ONGC,

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How much width of the land shall have to be left below the EHT line of 440 kv as per the rule. i am told that a corridor of 35 M width is to be left free below 220 kv line. please confirm

1 Answers  

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arcing is due to only capacitance or it is due to both inductance and capacitance? explanation.

2 Answers  

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what is meant by skin effect ?

3 Answers  

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If single phase having 220v so why 3phase is440v.

7 Answers   DLF,

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

0 Answers  

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how capacitance is neglected in short transmission lines ?

1 Answers   BMC, Qucab,

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why HT line voltage is multiple of 11.eg11kva,33kva,132kva

2 Answers   HP,

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Why induction motor can not be operated at synchronous speed?? what would happen if it is operated at synchronous speed??

5 Answers  

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What is the function of a capaitor in 1-phase IM?

1 Answers  

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