I HAVE A 1 MVA TRANSFORMER, I WANT TO KNOW THE FAULT LEVEL OF
THE SYSTEM ( WHAT IS FAULT LEVEL PLEASE EXPLAIN WITH EXAMPLE)
Answer Posted / shivakumar kinni
1 MVA, 11/0.415kV Transformer
Full load current= 1000000/(1.732x415) = 1391.24A
% Z(Impedance)=5 (As per IS 2026 for transformer ratings of
0.631 MVA to 1.24 MVA)
Fault current= IFL/%Z =1391.24/0.05 =27.824 kA
Is This Answer Correct ? | 18 Yes | 3 No |
Post New Answer View All Answers
How do we calculate over and under frequency tolerance from generator data?
what is the chiller and working principal
1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?
If we connect a motor and generator together (I mean that the generator gives the motor electricity and the motor gives the generator movement) regardless the losses. Will the generator still generate and the motor still move?
what is the advantage of connecting capacitors in delta than in star?
Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.
While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens
what is capacitor voltage transformer?? how it is different from potential transformer?
What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?
Why the standard of ambient teperature mentioned as 40 degree celcius in machines.
If i have two 3000 kW motors and the whole facility requires a 10 MVA transformer. What would be better installing two 5 MVA transformers(one for 1 motor ) or just a single 10 MVA transformer for both of them. Give reasons for your answer.
What are n circles?
Do inductive loads have distorted current waveforms ?
hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?
Operation carried out in thermal power stations?