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Question
define IDMT relay?
 Question Submitted By :: Rayudu Rama Krishna
I also faced this Question!!     Rank Answer Posted By  
 
  Re: define IDMT relay?
Answer
# 1
Inverse definite minimum time relay 
Is This Answer Correct ?    186 Yes 23 No
Niranajn
 
  Re: define IDMT relay?
Answer
# 2
It is an inverse definite minumum time relay. In IDMT relay
its operating is inversely proportional to fault current
and also a characteristic of minumum time after which this
relay definately operates.
 
Is This Answer Correct ?    205 Yes 18 No
Nimish
 
 
 
  Re: define IDMT relay?
Answer
# 3
It is Inverse Definite Minimum Time Relay. This will work
inversly proportional to Fault current and our time delay
settings in the relay.
 
Is This Answer Correct ?    78 Yes 16 No
Suthan Prabhu
 
  Re: define IDMT relay?
Answer
# 4
it is a over current protection relay 
Is This Answer Correct ?    31 Yes 79 No
Anil
 
  Re: define IDMT relay?
Answer
# 5
inverse defenet minimum time relay
having inverse characteristics
 
Is This Answer Correct ?    21 Yes 53 No
Anil
 
  Re: define IDMT relay?
Answer
# 6
it is a type of inverse current relay but with minimum time
delay
 
Is This Answer Correct ?    34 Yes 12 No
Shyam
 
  Re: define IDMT relay?
Answer
# 7
It is inverse in the sense , the tripping time will decrease as the magnitude of fault current increase.
simply saying,
"for a fault current of 25KA-the time delay may be 2s.
& for a fault current of 30KA the tme delay may be 1.5s.thus as the fault current increases the time delay decreases.
 
Is This Answer Correct ?    136 Yes 4 No
Klm
 
  Re: define IDMT relay?
Answer
# 8
IDMT - Inverse Definite Minimum Time lag

Inverse - Operating time is inverse with fault current magnitude
Definite - Time characteristics is definite (Near constant) irrespective of current magnitude

Minimum time lag - time taken to operate is less when compared to other protection relays
 
Is This Answer Correct ?    46 Yes 5 No
Prasanna
 
  Re: define IDMT relay?
Answer
# 9
is an inverse definite minimum time relay
there are 2 precautions to be considered when using this these precautions are the time setting and the current tap setting
these are to be considered since the relay is dependent on the inverse of time
 
Is This Answer Correct ?    19 Yes 4 No
Adesh
 
  Re: define IDMT relay?
Answer
# 10
IDMT relay means inverse definite minimum time relay.That
means when fault current increases then operating time
decreases.
 
Is This Answer Correct ?    35 Yes 3 No
Md.moazzem Hosen
 

 
 
 
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