Interested to Buy Any Domain ? << Click Here >> for more details...
WHY IS RESTRICTED EARTH FUALT PROTECTION NEEDED?? WHY CANT
DEIFFERENTIAL PROTECTION SUFFICE???
- 14 Answers
- 29156 Views
- I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
Diff relay has to be set allowing for unbalanced load also
Hence, it is set at 15 to 25 % of In, making it not very
sensitive to earth fault.
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. Between alternator & breaker one stepup transformer used. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.
A 400KVA transformer has 400 Hz frequency. If the frequency is changed to 50 Hz, then what will be the new KVA rating?
what is the difference between switch yard to residential area.and how much required it.
bus bar design conditions and sizing pls tell me quickly
what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks
how circuit breaker work.. what is the operations taking place inside a circuit breaker when an overcurrent occurs... is it similar to fuse?
What are the disadvantages of autotransformer?
what is RFID? thire application;
sent to a site and asked to explain how you would like a twenty seven flour building should be supplied with lighting and sockets plus a water boiler.
what do you mean by plant earthing system.
What are the advantages of vscf wind electrical system?
Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?
what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.
If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)
In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc
