how to calculate optimum loading for transformer?

Answer Posted / khalid hussain shaikh

POWER=1.732*VOLTAGE*CURRENT*POWER FACTOR
HERE POWER=2500KVA
VOLTAGE=11 KV
POWER FACOR AS STANDARD=0.85
I=?
I=2500KVA/1.732*11KV*0.85
KV CANCELLED EACH DENOMINATOR AND NUMARATOR,
I=2500/1.732*11*0.85
I=154 AMP (11 KV SIDE)
I=2500 KVA/1.732*415 V*0.85
V CANCELLED EACH DENOMINATOR AND NUMARATOR
I=2500 K/610.963
I=4.091 KA
I=4091 AMP

Is This Answer Correct ?    10 Yes 16 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

1.why we are using metal oxide gapless block in lightning arrester,2.What is minimum and maximum rating of metal oxide blocks using in india

1510


What is the necessary condition for stability.

725


I need HT sphere gap calibration table. Can any body help me.

1521


please describe the Transformer setting, Motor setting, I/C setting, Tie setting

1263


what is the safety of voltage power transformer(2250KVA0

1550






define the active power?

1480


why the carbon brushes are broken in srim while the motor runningtime

1243


What are the internal and external faults?

611


Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer

3186


condition Autotrip facia come on control panel of electrical transmission line?

1083


What is clock position of Transformer?what are the clock positions are there?and what is different of them?

2610


What is the tension required for the 25000 CFM AHU belt

2047


I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?

1489


State the factors, for the choice of electrical system for an aero turbine.

662


can we do the star delta connection of capacitor for 3- phase motor starter.

1538