Answer / newguy

because of variable power factor

Answer / bharani

KW is for unity power factor. But it is not so when you have
inductive load where PF may vary any were between .5 to .99.
Hence ratings are given in KVA.

Answer / aftab alam

because transformer or DG are energy convertor not consumer
and KW is active power being consumed , transformer and DG
do not consume any power except some losses, hence these
are rated as KVA free from power factor

Answer / santhosh

transformers and dg's are inductive loads they are carying
capacitance and inductance so capacitive reactance and
inductive reactanctance .ie called in kva

Answer / bsoni

because the lossemeasurd in kwh

what is droop control?

0 Answers   BARC,

Thumb rule of cable size(rm>30 rm)X multiplying factor=ampere

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at which voltage level arcing ground is occurs ??????????

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different types of electrical cable?

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what is rms value?

3 Answers  

how to reduce humming noise in transformer?

3 Answers  

l&t switch FN 63 handle position can we change

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A double circuit with dog conductor 66KV Transmission line from wind farm evacuation to feeding substation having capacity of 25MW for transmission. Can same transmission network be considered for further expansion of Power & how much in MW. If we need to expand next 10-15 MW more will there any augmentation is required in transmission network? Kindly reply asap.

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Can the Neutral and Body Earthpits of a transformer conncted together by Earth strips under ground.

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what is the meaning of vcc

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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