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.
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 a signal flow graph?
Can you explain about Restricited earth fault protection scheme
Draw the line diagram of diffretial relay connected to transformer?
How does "OUT OF STEP" relay ,for Synchronous motor protection, work?
Dry type transformers
what is difference between window type and wound type transformers?where we will use window type and wound type transformers?
What is the difference between rated and per unit in transformer?
What should be current in the Primary and secondary side of 1000KVA (11KV Supply)Transformer.?
What is the difference between acs 550 & acs 850
how to calculate the step resistance for slipring induction motor,how you deside the no of step for that?
How would your past experience translate into success in this job?
application s to shunt coil
What's the difference between non break power supply and non break non short break power supply
for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations
how to calculate current and voltage in a same circuit?