The capacity of the transformer is 20/25 MVA, Ratio is 132/11 KV, Vactor group

The capacity of the transformer is 20/25 MVA, Ratio is
132/11 KV, Vactor group YNyno. and impedance is 10.07%. As
per the calculation the secondary current is 1312.2Amps.
The maximum fault current the transformer should sustain is
13.030KA. How many times the transformer should sustain the
maximum short circuit current of 13.030KA over a period up
1 Year. The transformer is repaired one & 10 Years old.

Question Posted / r.g.modani.

1 Answers
9331 Views
I also Faced
E-Mail Answers

The capacity of the transformer is 20/25 MVA, Ratio is 132/11 KV, Vactor group YNyno. and impedanc..

Answer / khamesra.amit

Failure / service life of the transformer depends on various factors like continuous loading of the transformer, the health of the insulation, type of oil etc. Moreover, the shortcircuits in the electrical system is not a daily phenomenon hence there is no mathematical formula to calculate transformer life.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

what types of load we get from the national grid? is this capacitive or inductive?

1 Answers

what is the difference between current voltage transformer and current transformer and where it is used?

2 Answers

Do closed loop systems require manual input?

0 Answers GE,

HOW TO CALCULATE THE VT SIZING?

0 Answers L&T,

I'm looking for a softcopy manual set for a Credence ASL- 3000. Anyone know where I can get it?

0 Answers

What is depreciation factor?

0 Answers HCC,

WITCH CARDS IN USE IN FIRE CONTROL PANEL.

0 Answers

what is the difference between droop mode and ischnorous mode in thermal powerplant?

0 Answers GVK, Thermax,

Hoe to calculate body earthing conductor size ?

1 Answers IES,

how does calculate loss correction factor in transformer

1 Answers

I am having dual speed motor of cromton greaves make of 3.7 KW -1400 rpm and 5 KW - 900 rpm. Please let me know groups and winding connction for rewinding purpose.

0 Answers

what is tower earthing and what for it is required

1 Answers

For more Electrical Engineering Interview Questions Click Here