Answer / dipak

It is a dependent on a prospective short circuit
current.it's inversely proposanal to current,if a high
fault current less time required to operate protective
device.

what is ELCB?

10 Answers   Wipro,

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A heater capacity is 3.0 KW on 415V . if supply voltage is 380Volt . what is heater capacity on 380volt . and how calculate and give formulas . Prakash veer singh Roto power Engg.

5 Answers  

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What is mean by PID controller? And what is its Long form?

9 Answers   Jindal,

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I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers  

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why is the power generator connected as star earthed or star earthed through reactance and what its features ?

0 Answers  

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difference between a diode and thyristor?

0 Answers  

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11kv alternator commissioning test?

2 Answers  

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What are the application of filter?

0 Answers  

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what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?

0 Answers  

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How is magnetic leakage reduced?

0 Answers  

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Differentiate between induced emf and self inductance?

0 Answers  

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whatis the difference between electrical and electronics?

11 Answers  

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