Answer / karthik ccel

Over current relay has to protect the circuit from over
current..i.e. in the circuit if any overcurrent produced due
to the short circuit occured,then this overcurrent relay to
protect the circuit.

Answer / dev

It depends upon the fault i
mean if there would be any
earth fault or overcurrent
then we use impedance relay
if u r talking about small
motor we can use overload
relay for heavy equipment
we have impedance relay
tripping relay mm30 relay for
every fault

Answer / saadsms

if u mean by the fault ( earth fault ) u can use eart lekage
circuit breaker ( E.L.C.B )equall or mor than 30 ma current
lekage.

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