what is the diff. b/w restricted earth fault relay &
standby earthfault relay and where they are used?
- 4 Answers
- 69052 Views
- KSK Energy, Reliance, I also Faced
- E-Mail Answers
Answer Posted / ramniveth
i agrre with this answer with little correction
Standby Earth Fault relay is also connected to star side
the difference between SEF and REF is REF operates in
InZone only
SEF operates in In and Out Zones. If there is an earth
fault in outgoing feeders and the feeder protection is not
operated then SEF operates .
Tripping time for SEF will be more than REF and Earth fault
protection in O/G feeders.
| Is This Answer Correct ? | 112 Yes | 11 No |
Post New Answer View All Answers
our industries ht line so power fluctation(once drop of power please rectify causes
Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?
why ht cable end termination don't have a gland?
What are the ratings of VCB, MCB, MCCB, SF6, ACB, and OCB?
WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?
Is single load(eg: three phase motor) having all the components like positive,negative,zero sequence components during fault condition?
Which do you think is the most significant cause of energy loss in a factory?
State and define norton’s theorem?
How to reduce -234126219.6403 MVAr generation and by what?
What is real time power factor control panel(RTPFC)?
What are differences between Voltage, EMF & Potential difference ?
how can maintain the power factor and why and this is how do work tell us
Transmission through a short line depends on
What happened ,If 3 phase clearance not maintained in 33KV Line,11KV LIne etc?
The height to which the liquid in a tank to be maintained for a certain constant velocity?
