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How can we calculate the capacity of the capacitor bank
attached with the Main panel, when we know the capacity of
the panel installed in KVA Rating?
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Answer Posted / sanjeev nair
The formula for calculating the Capacitive kVAr required to
compensate inductive kVAr is kW*sqrt(tan_angle1-tan_angle2).
In your case, you have to check the present power factor
and then the kW.
Suppose, If you have load of 50kW and the power factor is
0.8 and you have a plan to improve the PF to 0.95 then as
per the above formula the Capactive kVAr required to
compensate the inductive kVAr would be 21.
Besides, one should understand and work on the application.
ie, you can go for a 20 kVAr capacitor bank as per the
above if you have 50kW motor working on a pf of 0.8. If
both load and inductive kVAr is varying, then you have to
go for automatic pf control system with suitable banks to
compensate the inductive kVAr.
| Is This Answer Correct ? | 4 Yes | 3 No |
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