WHY IS RESTRICTED EARTH FUALT PROTECTION NEEDED?? WHY CANT
DEIFFERENTIAL PROTECTION SUFFICE???
- 14 Answers
- 25537 Views
- I also Faced
- E-Mail Answers
Answer Posted / amit
Restricted earth fault protection is used for zonal
protection for transformer, generator etc. For earth fault
protection we set 10% or 20% earth fault current hence we
leave 10-20% of winding unprotected. By using REF we provide
protection for that remaining portion of winding.
| Is This Answer Correct ? | 12 Yes | 4 No |
Post New Answer View All Answers
If I want to connect a capacitor bank on the HT side of a 11kV/415V, 3 phase delta-star distribution transformer to supply Reactive power to it..what practical specifications of a Capacitor bank that can i've??please reply..
Pl. share your experience about industrial-electronics repair of machine tool.
what is meant by impedance & transient protection?
How vfd saving power.
why magnet has north and south poles only why not east and west and why we are considering as north and south poles? why cant we consider as east and west?
difference between semiconductor & conductor & insulator?
How i can calculate current of cable according to ares?
Define conversion efficiency of a power amplifier.
what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?
how could we know the size of cable by physical view?
Why is tan-delta test and capacitor measurement done on alternator?
H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....
When we giving the 3 phase supply to ups system how to coming netural?
we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?
How to calculate VCB rating for 33KV ,25 MW Power line?
