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Question
What is ELR, and where it is used ?
 Question Submitted By :: Rvg
I also faced this Question!!     Rank Answer Posted By  
 
  Re: What is ELR, and where it is used ?
Answer
# 1
ELR is earth leakage relay,as its name indicates it's used
for protection against earth leakage.
 
Is This Answer Correct ?    46 Yes 5 No
Giri
 
  Re: What is ELR, and where it is used ?
Answer
# 2
this full name is earth leakage relay . basically relay
used in diffrential current transformer
 
Is This Answer Correct ?    10 Yes 16 No
Ritesh Singhal
 
 
 
  Re: What is ELR, and where it is used ?
Answer
# 3
ELR is earth leakage relay, and main attraction is its high
current rating, and it can use with CT also(with suitable
calibration).
ELCB are less current capacity ELRs and using ferromagnetic
substances with differential relay.
 
Is This Answer Correct ?    8 Yes 11 No
Rvg
 
  Re: What is ELR, and where it is used ?
Answer
# 4
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 ?    21 Yes 2 No
Rk
 
  Re: What is ELR, and where it is used ?
Answer
# 5
ELR is Emergency Load Relay. 
Is This Answer Correct ?    0 Yes 12 No
Usha
 

 
 
 
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