define IDMT relay?
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Answer Posted / swati saxena
The term is generally used to describe relay (electrical switchgear) characteristics. IDMT relays have such tripping characteristics that, for a particular range of low values of current the tripping time varies inversely with the value of current. But beyond a certain current limit the tripping time becomes constant(definite) and causes tripping in minimum time. Hence the name Inverse/Definite Minimum Time. This type of characteristic is found in Over current Relays.
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