What is the amount of no load current of 630 kVA tranformer
voltage ratio 11kV/440V ?
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Answer / satish babu
The No load current depends on the Core grade used in the
transformer laminations & the flux density at which it
operates,
a) 1-2% in high quality materials
b) 5- 10% in economy grades,
| Is This Answer Correct ? | 24 Yes | 1 No |
Answer / dennis
No Load current will depend on Core Grade, Core Thickness,
Flux Density, Frequency and the quality of workmanship (how
good are gaps closed).
| Is This Answer Correct ? | 15 Yes | 0 No |
Answer / j.prabhakaran
The amount of no load current can be only calculated if we
knows the value of core loss of transformer and capacitance
current across the circuit.....
| Is This Answer Correct ? | 7 Yes | 1 No |
Answer / dr. alaa baiumy abdel azim &a
frist we will get the rated current of the winding
I = 630 * 1000 / CUBIC ROOT OF 3 * 11 * 1000
I = 33 Amper
I NO LOAD = 0.5% OF I RATED
NO LOAD CURRENT = O.OO5 * 33
= 165 m A
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / nyi lwin
transformer no load current 630 KVA....1 hour unite
question
| Is This Answer Correct ? | 0 Yes | 4 No |
Answer / mash
it depend on the turns of coil what is the Gage of wire...
| Is This Answer Correct ? | 0 Yes | 4 No |
Answer / amit sonmale
Ctually No load Curent Depend on Transfarmer eficiancy To
take load.Depend on his Copper loss.
| Is This Answer Correct ? | 1 Yes | 6 No |
Answer / gaurav srivastava
it is a tricky question....
u know that when transformer is at no load. the secondry
windings are open...so that there is no current flow at
secondry winding...
and for primery winding we calcute these value from OPEN
CIRCUIT TEST.
that is mentioned in all books thats have transformer
chapeter...
GAURAV SRIVASTAVA (UNITED COLLEGE OF ENGINEERING AND
RESEARCH) ALLAHABAD
| Is This Answer Correct ? | 3 Yes | 10 No |
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