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Question
What is the amount of no load current of 630 kVA tranformer 
voltage ratio 11kV/440V ?
 Question Submitted By :: Naveen Kumar
I also faced this Question!!     Rank Answer Posted By  
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 1
Depends on the load...
I=V/R,
 
Is This Answer Correct ?    8 Yes 31 No
Satyendra
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 2
dear satyendra it is no load current so wt is the use of
load????
generally no load current is 5-10% of rated value , but it
further depends on type of trformer 1 or 3 phase
 
Is This Answer Correct ?    21 Yes 3 No
Harish
 
 
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 3
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
Satish Babu
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 4
amount of no load current is always 0 what ever the rating
of the trasformer, ratio, etc. no load means there is no
close path. then how can we get the current
 
Is This Answer Correct ?    3 Yes 39 No
Subu
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 5
depend on power factor if given . accurate values can be
given out , and where we want to get the current in sec
side or primary side
 
Is This Answer Correct ?    1 Yes 18 No
Pravesh
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 6
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
Gaurav Srivastava
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 7
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
Dennis
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 8
Ctually No load Curent Depend on Transfarmer eficiancy To
take load.Depend on his Copper loss.
 
Is This Answer Correct ?    1 Yes 6 No
Amit Sonmale
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 9
630/19.05(11*1.732)=33.07amp 
Is This Answer Correct ?    1 Yes 14 No
Nilesh
 
  Re: What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
Answer
# 10
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
J.prabhakaran
 

 
 
 
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