IDMT RELAY EASY EXPLANATION in Tamil | why we use IDMT over current on feeder in tamil

IDMT RELAY EASY EXPLANATION | why we use IDMT over current on feeder IDMT is Inverse Definite Minimum Time Normal Inverse (t) =TMSX(0.14 /(〖(Ia/Is)〗^0.02-1)) Very Inverse(t) = TMSX(13.5 /(〖(Ia/Is)〗^1-1)) Extremely Inverse(t) =TMSX(80 /(〖(Ia/Is)〗^2-1)) Long time inverse(t) =TMSX(120 /(〖(Ia/Is)〗^1-1)) #IDMT