What is the method to calculate the capacitor bank rating for say 50 KW load a

What is the method to calculate the capacitor bank rating
for say 50 KW load and how do we connect each capacitor to
busbar??

Question Posted / amrinder.bhunt

4 Answers
13398 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What is the method to calculate the capacitor bank rating for say 50 KW load and how do we connect..

Answer / amrinder

50 KW is 68 hp ,that means we have to connect three 22.5
KVAR capacitors in delta..?? Please Justify

Is This Answer Correct ?

6 Yes

0 No

What is the method to calculate the capacitor bank rating for say 50 KW load and how do we connect..

Answer / vijay kumar

Actually motors are designed at 0.8pf.
50kw load means 50/0.8 kva i.e to 62.5 kva
we know that kvar=kva*sin(angle b/w V & I)
To take Power factor to Unity we need Kvar=62.5*0.6
=37.5 kvar

Is This Answer Correct ?

4 Yes

3 No

What is the method to calculate the capacitor bank rating for say 50 KW load and how do we connect..

Answer / santoshvarma

Before connecting a capacitor bank we have to know for what
purpose we are connecting, if the load having power factor
of 0.8 and if you want to increase the power factor to 0.95,
for that you need to install capacitor bank. The rating of
the capacitor bank can be calculated as follows

Required KVAR rating of capacitor bank = KW(of
load)*(tan(cosinver 0.8)-tan(cosinve0.95)

By this way you will get the kvar rating of capacitor bank.

The capacitor is always connected in parallel to load bus.

Is This Answer Correct ?

2 Yes

2 No

What is the method to calculate the capacitor bank rating for say 50 KW load and how do we connect..

Answer / biswajit sahoo

generally hp/3,connected in delta

Is This Answer Correct ?

1 Yes

5 No

Post New Answer

More Electrical Engineering Interview Questions

typical per KM resistance values of ACSR DOG conductor for 33KV & 11KV OH system? typical per KM resistance values of XLPE 300Sq mm cable for 33KV system? typical per KM resistance values of XLPE 185Sq mm cable for 11KV system?

2 Answers wbsedcl,

What are the reasons for the parallel operation of transformers?

0 Answers

IN SOME CASE, WHEN I GIVE 24VOLTS DC AS INPUT, WHILE IN OUTPUT (THAT MEANS TERMINAL SIDE OF THE INSRUMENTS) I,M RECEIVING ONLY 6 VOLTS, WHAT IS THE REASON FOR THAT MUCH VOLTAGE DROP?

3 Answers

How to calculate the actual 3phase power, if the load current of each phase is not balanced

2 Answers

what r PID controllers?why they r used?what is there purpose?plz Explain in detail

0 Answers

29 Which of the following breaking method save energy? A regenerative breaking B plugging C dynamic breaking D none of above

1 Answers

What should be value of Circuit breaker operating time and tripping time?

3 Answers

what is stray loss in transformer?

19 Answers Vijai Electricals,

I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

0 Answers Siemens,

what is meant by directional earth fault and non directional earth fault? describe both.

0 Answers

Trafo ratio is 11kV/6.6kv,Vector group is YND11. What will be the effect if secondary is used for earthed system.

0 Answers

how we can select MCB ratings according to Voltages, Curves.

2 Answers

For more Electrical Engineering Interview Questions Click Here