What is the differance between vacuum breaker and vacuume contactor

1 Answers  

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When dc supply is fed to rotor of the alternator how it work?

0 Answers  

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what is power frequency withstand and impulse withstand of a circuit breaker?

2 Answers   Power Grid,

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what is earthed and inearthed cable or system?

1 Answers   CCCL, L&T,

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can alternators work at leading power factor?

2 Answers  

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waht is the working principle of saft starter & what is the difference in vfd & saft starter

2 Answers   Cipla,

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explain Xmer

2 Answers  

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For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?

0 Answers  

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How can decide the MVA rating of power transformer for substation like 220/132, 132/66, 66/33kv etc or even higher kv rating of substation???? Send me the strictly technical answer that shows your strong technical aptitude.

6 Answers  

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why generally transformer are in star to delta

3 Answers  

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If there is 25 hp motor,which type of starters we can us? why?

7 Answers  

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How many devices can be connected in one zone of FACP

0 Answers  

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