In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.

0 Answers   PPIL,

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how to calculate unit consumption on 3phase 380-415 v0lt kilowatt motor eg ( 55kw,380v,3phase 50-60hz)

1 Answers  

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what is prniciple of three phase IM?

3 Answers  

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Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

0 Answers  

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how we can improve power factor from 0.8 to 0.85 or 0.9 & how we identify its either lag or lead ? thank you

7 Answers  

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why Induction Generators are not "Black start" ? and apart from WTGs where this types of generator are generally used?

0 Answers  

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in communication what is the role of elelctrical engineer?

3 Answers   Quippo, Reliance,

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some basic standard questions on transformer.

0 Answers   United Engineering,

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Why corona takes place?

4 Answers   L&T,

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what is STUB protection in tranmission system and switch yard area?

9 Answers   KSEB, Power Grid,

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When motor stater and roter air gap do big then what will moter.

3 Answers   Intas,

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WHAT IS LINE TRAP,HOW IS IT FUNCTION?

1 Answers   L&T,

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