If the t/f capacity is 500KvA then what is Amps ratting of the main breaker.

Categories >> Engineering >> Electrical Engineering
Suggest New Category

If the t/f capacity is 500KvA then what is Amps ratting of
the main breaker.

Question Posted / thiru_arasu42

5 Answers
7703 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

If the t/f capacity is 500KvA then what is Amps ratting of the main breaker...

Answer / rekha.k.m.

It's 800A set at 665A

Is This Answer Correct ?

5 Yes

1 No

If the t/f capacity is 500KvA then what is Amps ratting of the main breaker...

Answer / santosh k b

800 Amps( Rekha k m answer ok)

Is This Answer Correct ?

2 Yes

1 No

If the t/f capacity is 500KvA then what is Amps ratting of the main breaker...

Answer / thiru arasu

the above one is right,.

Is This Answer Correct ?

0 Yes

0 No

If the t/f capacity is 500KvA then what is Amps ratting of the main breaker...

Answer / athar abid

As we Know that

KVA = Sqrt 3 . Voltage(V) . Current(I)

Now for 400V (Phase-Phase) syayem

I = 500KVA/(1.732 * 400)
=500*1000/(1.732*400)
=721.7 Amps

There is no standard breaker available with this rating, so
take one step above rating i.e. 800Amps

Hope its clear.

Regards
Athar Abid

Is This Answer Correct ?

1 Yes

1 No

If the t/f capacity is 500KvA then what is Amps ratting of the main breaker...

Answer / krishna reddy

2000Amps

Is This Answer Correct ?

0 Yes

5 No

Post New Answer

More Electrical Engineering Interview Questions

in an electronic tri vector meter when the current and voltage sequence changes ? what is the effect of phase sequence on recording of meter

0 Answers L&T,

what is the use of tertiary winding?

2 Answers

As per which Indian Standard induction motors are manufactured?

2 Answers

what are the main problems that happen in an emergency light and how to fix them ?

2 Answers

If VFD is On but no starting commond on it. so how many outpout voltages of VFD

0 Answers

Purpose of lighting transformer.

2 Answers

Without seeing the nameplate descriptions of a rotating machine,Is it possible to say which one is a motor and which one is a generator? How would you certain this?

3 Answers

How many losses in generators? how we can reduce them? and also in motors,transformers?

1 Answers

how power saving takes place through VFD?

9 Answers

different between horse power and break horse power

2 Answers Allied Group,

how to calculate the output power of vfd , please help me.

1 Answers

As we know that during saturation test of CT from secondary side, the current in secondary shoots up after core saturation. How core saturation effects the secondary current?

2 Answers

For more Electrical Engineering Interview Questions Click Here