Answer / har

mccb - module case circuit breaker -use in thermal magnet
for breaking
acb - air circuit breaker- use in thermal magnet with ct
for breaking

what is the meaning of 1250 KVA Trasformer

2 Answers  

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what is mean by derating factor?

4 Answers   Essar,

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what is the contact resistance of vacume circuit breaker??

1 Answers  

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why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?

0 Answers  

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Why scr and igbt used in  ups systeam ????

1 Answers   JLL,

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Dear sir, By which formula u can calculate for a particular kv line there is a range of mw.

0 Answers  

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what is the use of reactive power

3 Answers  

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What do you mean by turns ratio of instrument transformer?

0 Answers  

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HOW TO CALCULATE THE VT SIZING?

0 Answers   L&T,

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What is Surge Capacitor? Why it is require in Generator Circuit Breaker,inspite of surge arrester?

0 Answers  

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why characteristics of overcurrent relay is time-->psm instead of time-->current?

0 Answers   ABB,

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What is Residual Voltage & Residual Current?

4 Answers  

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