We have 2 no. 4MW DG set. and GEB supply.
But, we running, only 1 DG set. when we done APFC/Power
factor setting : 0.90, then winding temp. Low. but when
setting done : 0.83, then Winding temp. increase.
WHY Why ? ? ?, plz give me answer.

Answer Posted / suthan prabhu

The reacive power taken by the load will be same but the
current supplied by the source will increase bcoz the p.f
is decreased from 0.9 to 0.83.hence the winding temperature
increased.

Is This Answer Correct ?    5 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv

1930


WHY BREAKER ARE USED IN SUBSTATIONS?

1732


How can we calculate ac current from the given DC current when AC voltage is given?

1533


In a large office how do we calculate required number of light fittings, assuming fittings are 4x18W or 2x36W fluorescent fitting ?

1425


In Power cable specification what is U0/U and Um.

3224






what are the basic insulation levels & what its Unit

1493


What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?

1014


what is model question rrb junior engineer electrical gr.II

1549


how to find the Motor,s insulation Power?

1218


What are the applications of autotransformers?

641


Define non-touching loop.

812


What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?

1857


do we use links in a dc circuit?if so what s its use in it?

1496


What would be the size of wire used for 2 Ton of window A.C?

1430


A well system is when , no. of bus bar is less or more. Tell me the concept of it.

1455