we done magnetic balance test for 33KV /440V transformer in our company , but

we done magnetic balance test for 33KV /440V transformer
in our company , but the ratio out is confusing us

Voltage applied in RY = 440 , at RB = 320 and YB = 60

RY 440 = ( RB + YB ) 380 only

Please let me know what type of problem is it.

Question Posted / nandaeee@hotmail.com

2 Answers
5383 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

we done magnetic balance test for 33KV /440V transformer in our company , but the ratio out is co..

Answer / nandaeee@hotmail.com

may be any winding fault or due to resistance load in of
cables connected in line

Is This Answer Correct ?

2 Yes

0 No

we done magnetic balance test for 33KV /440V transformer in our company , but the ratio out is co..

Answer / k.prakashchandra

Since you have conducted test on delta connection ,the
equation may not hold good.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

how to calculate single phase motor efficiency ?

0 Answers Bhel,

What happen when change order of CT in GIS feeder?

0 Answers

we all know that corona is nothing but ionization of air around the conductor and there by allowing current to pass through ionized air.but we are not getting any short circuit in between the respective phases though the air turned as a conductive media between them??

1 Answers Siemens,

if i have one capacitor=80 micro farad which correct the unity power factor,but i want to make capacitor bank who correct the power factor.so,how to split this capacitance value?

2 Answers

basic differance between electrical and electronic.

1 Answers Jindal,

what is meant by excitation current & armature current ? where its produce & how we can calculate ?

0 Answers

Draw a block diagramof Three UPS systems connected in Parallel mode?

0 Answers HSL,

How to calculate KW saving for power factor correction from 0.92 to 0.98 at 350KW load?

5 Answers Heidelberge Cement,

describe the Operation of induction generators from bus bars

0 Answers AMIE,

Our Slip Ring Induction Motor Frequently tripped By Earth Fault While Starting time and in Normal Operation Time also Kindly Let me Know the Reason. Application Ball Mill - Cement Mill

1 Answers

diff between UPS and inverter?

2 Answers

HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

0 Answers

For more Electrical Engineering Interview Questions Click Here