what is the difference between surge arrestor and lightning arrestor ?

6 Answers  

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Why grounding is generally done in supply end?

1 Answers   ISRO, OFBL,

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how is working the APFC when varying the load?

1 Answers  

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Do I need a special Transformer to put 240 VAC 3 phase into it and and get 480 VAC 3 phase out of it to run a machine? Or, do I just use an ordinary step down transformer and step up the voltage? Thanks

2 Answers  

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From stability point of view,What(higher/lower) should be the value of inertia constant of rotating machines?

1 Answers  

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what is the different between RCCB & ELCB

3 Answers  

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why transformer cannot rotate though the princplebehind induction motor is similar to a transformer?

2 Answers   GE,

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why there is a phase difference between line voltage & phase voltage ?

4 Answers  

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what is the maintain in ACB,VCB,MCB,MCCB breakers?

4 Answers   CTS,

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What is the kva?

2 Answers   Makino Auto, SAL Steel Power, Sapphire Group,

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WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED

4 Answers   L&T,

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Office , overtime and television how big this stage?

0 Answers   ONGC,

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