Answer / ritesh

actually setting of over load relay depends on the duty of
motor.if duty of motor is 2 then set relay at full load
current.if it is 2.1 then set relay at 10% higher then full
load current so on...........

Answer / rupali burnwal

125% of the motor full load current require for Overload relay.

Answer / bijay

RELAY SETTING REQUIRES TWO THINGS CURRENT AND TIME
CURRENT SETTING CAN BE UP TO 20 TO 30 % FOR SMALL MOTORS
AND UPTO 10% IN MV MOTORS.
BUT DONT FORGET FOR MUCH TIME U R OVERLOADINIG THE MOTOR.
TIME SETTING IS ALSO IMPORTANT...
THIS DETERIORATES ITS INSULATION

Answer / exxon

Is it safer to find out the spec about the motor winding
before deciding the overload relay settings. Every motor
manufacture has detailed spec. about is motor winding such
as insulation class:. Overloading the motor full load
current will deteriorates the insulation and winding life.

Answer / sanjy

10-15% of its rated current rating.

Answer / suresh

set the overload setting standerd draw currents 10% extra
but less than rated current

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