How to determine earth fault level to set relay for a
normal distribution system of 11 kV , 100 A load????????
Answer Posted / k.prakashchandra
EFR is usually set at 20 % of OCR.The earth fault current
is V/ Z of the line + ER value of the support.But you can
not expect this calculated earth fault current.
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
WHAT IS THE FUNCTION OF SHORT CIRCUIT MAINTENANCE CT
What is effect of over voltage and under voltage on ACB
What are the ratings of VCB, MCB, MCCB, SF6, ACB, and OCB?
hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.
plz send me Bhel, Mahagenco, sbi previous exam paper for electrical engineer on my email-id kambali_smita@yahoo.co.in
How will be the single line diagram of series trip HT breaker? how it works?
What is the rotor frequency of 10 Hp 1440 RPM 50HZ 415V ?
what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)
How can we increase fuel-power ratio of any DG set?
what is the function of capacitor duty contactor in an capacitor panel???
what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV
In which working principal temperature transmitter work.explain in detailed.
main difference between ac and dc?
What is polar plot?
A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.