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Why capacitor bank does not require in DG Set?
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Answer Posted / sanjay dalvi
IN INDIA, DG DESIGN FOR 0.8 POWER FACTOR,THEN IN UR MIND A
QUESTION MAY ARRISE WHY .8 ONLY??
ANSWER IS THE LOAD IS ALLWAYS INDUCTIVE IN NATURE SO WE
USED 0.8 PF IN DG DEGINING AS A LAGGING PF.
NOW COME TO OUR ACTUAL QUESTION
CONSIDER 1000 KVA DG SET WHICH DELIVER 800 KW O/P POWER
BUT IF IMPROVE POWER FACTOR FROM .8 TO 1 PF THEN
OBEIOUSLY POWER DELIVER INCREGES FROM 800 TO 1000KW
P= V*I*COS $ WE KNOW THAT PF IS 1
LOAD CURRENT IS ALSO SAME FOR
LOAD
HERE POWER INCREASE DIRECTLY EFFECT THE VOLTAGE LEVEL
IF THE VOLTAGE LEVEL GOES BEYOND THE LIMIT IT WILL TRIP
THE AVR SYSTEM OF DG & DG WILL STOP RUNNING
IF WE USE CAPACITOR BANK THEN VOLTAGE LEVEL INCREASE
BEYOND THE LIMIT..SO WE R NOT USEING CAPACITOR BANK.
| Is This Answer Correct ? | 24 Yes | 6 No |
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