Interested to Buy Any Domain ? << Click Here >> for more details...
what do you mean by PF correction. A motor is rated at 15
kw,415 volts, 0.7 pf and eff of 0.92. The powerfactor is
improved to 0.98 by adding capacitors at the bus. calculate
the current drawn by motor under full load condition before
and after pf correction
- 5 Answers
- 7727 Views
- I also Faced
- E-Mail Answers
Answer Posted / lakshmi
pf correction means power factor improvement. for higher
factor the cutrrnt is reduced there by decresing the losses
and incresed efficiency occurs.
input power = output power / efficiency
I/p = 15000/0.92
= 16304.34 watts
I = p/ (1.732 * v * cos(phi))
= 16304.34/(1.732 * 415 * .7)
= 32.404 Amps before pf correction
I = 16304.34/(1.732 * 415 * 0.98)
= 23.416 Amps After pf correction
from the above values we said that the factor is improved
from 0.7 to 0.98 the current will be reduced from 32.404 A
to 23.146 A respectively.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
what is the difference between c power and U power acb breaker
what is the sludge current
how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)
what is transient enclosure vltage , very fast transients, very fast transient over voltages
if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please
low frequency protection why recomend?
Is there any type of starter for DC motor other than two point,Three point and Four point starters?
how to find the capacitance value of the motor while running??
Explain about retrofitting of machine tool.
What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?
ROC converges if poles and zeros lie inside a. Origion b. Z=1
IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM
DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.
Why front mounted CT polarities are always towards breaker?
A ii kv 1200 A Breaker combination fixed in a cubicle. How many ampere Fuse is required? If fuse is not using, Why?
