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.
- 1 Answers
- 8515 Views
- I also Faced
- E-Mail Answers
Answer Posted / 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 View All Answers
What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines
How many sprinklers should be in one pipe line?
What current flows in the transformer primary when its secondary is open?
what parameters should we check to reduce the power bill
What is mean by STUB protection?
how to measure dc earth leakage current?
WHAT IS THE TOTAL POWER GENERATION IN CHHATTISGARH?
Would you recommend to replace all oil filled cables with xlpe cable for hv transmission with the current technolgy for xlpe cable?
What Is Sampling?
How phase displacement change in the over current relay coils.
Please brief working principle & construction of permanent magnet AC Servo motor
State angle criterion.
why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?
how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids
What is the Difference between Ac Drives and Dc Drives? According to application, speed, Torque, cost, Reliability, Construction, Motor etc... Thankyou !!!
