What is the amount of no load current of 630 kVA tranformer
voltage ratio 11kV/440V ?
Answers were Sorted based on User's Feedback
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 |
HOW TO TEST THE SODIUM VAPOR AND MERCURY VAPOR LAMP ?
L&T ACB C-POWER OF 800A FAULS TRIPING AT THE TIME OF 110KW MOTOR STARTS WITH EARTH FAULT RELEASE
How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current
what is "PE" earthing? and what do u know abt 16mm cable?
dear sir, How i calculate the 2 phase welding transformer power or kva?? kindly tell me....
can HT cable or HT bare conductor used for LT line? is yes what would be the current rating?
As you achieve greater success with the company after some years, Will you like to be a share holder in our company?
where used impendence relay?
WHAT HAPPENS IF STARTER OF A FLUROSCENT LAMP IS SHORT CIRCUITED AND WE PUT THE SUPPLY ON?
Why don't we provide SURGE ARRESTORS for Transformer feeders?
At which time Synchronous generator act as a Synchronous Condenser?
What is the power rate of power transformer?