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?
- 2 Answers
- 6684 Views
- I also Faced
- E-Mail Answers
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 |
Post New Answer View All Answers
What is the armature mmf in a D.C machine?
differnce between single acting and double acting solenoid valves
How Load Factor, Demand Factor, Diversity Factor etc best applied in designing an electrical circuit? Is it allowed to consider these factors in each and every panel in an electrical distribution system? Can any body suggest a good book for reference?
how to select correct size of power cable for inverter duty motor
what is the meaning of impedance protected in instrument cooling fan
Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.
Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.
DERIVE AN EXPREION FOR MAXIMUM POER TRANSMISSION, WHAT ARE ITS APPLICATIONS.
In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)
What is Plank's Law?
What is the unit of charge and current?
what are the specifications we must look at to select a relay for any capacity motor?
It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.
Hello Guys !! i want to rrb section engineer electrical(signal) previous model papers? any body help me?
what is the significance of terminal voltage and phase sequence in the operation of paralleling of two generators?
