What is ELR, and where it is used ?
Answers were Sorted based on User's Feedback
Answer / giri
ELR is earth leakage relay,as its name indicates it's used
for protection against earth leakage.
| Is This Answer Correct ? | 89 Yes | 5 No |
Answer / rk
ELR or commonly known to be EL CB . all 3phsaes and netral
of the incommin supply passs throuh oone ring type ct so
that there will be no current in CT secondary if there is
healthy system but in case there is a ground fault at load
end the cT will record the unbalance current and the relay
will sence the fault.beacuse durring ground fault the fault
curent will pas througth ground to the sourcr insted of
throug the neural inside the ring CT.
| Is This Answer Correct ? | 40 Yes | 3 No |
Answer / roshan thakur
ELR is earth leakage relay.this is very sensible for leakage.and this is generally used in panel for protection if MCCB.
| Is This Answer Correct ? | 21 Yes | 3 No |
Answer / tushar
Just I want to know about ELR. We have connected ELR With Incoming panel(800A). That ELR is getting Trip within Seconds. Equipments are not getting any Earth Leakages. No shock effect from equipments… I am not able to Understand what is exact problem..Pls Let me know Reason.
| Is This Answer Correct ? | 1 Yes | 0 No |
this full name is earth leakage relay . basically relay
used in diffrential current transformer
| Is This Answer Correct ? | 14 Yes | 26 No |
what is the difference SCR & TRIAC?
Seamless tubes are made by?
If the supply voltage is same (say 440V) whether a system designed for 60 Hz frequency will work with 50 Hz frequency or not , if so pl. give clarification.
What is dielectric loss?
What are the raitings of Mcb,mccb and Acb in detail ??
What is a formula to decide the size of the cable of the star delta motor ( From Contactor to the motor 2 runs )
Why CT secondary should not be kept open?
What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?
Is only insulation the difference between High voltage and Medium voltage cable?
Why the suply frequency in INDIA is 50HZ
why the autotransformer burnt while stating the pumpmotor?, In starter and motor there was no abnormality.
How to calculat the size of copper& aluminium wire ?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)