What is the formula to calculate the rating of a thermal
over load relay
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Answer Posted / barkha jha
At starting motor draws current 5 to 6 times of the flc so
overload relay setting is done this kept on mind.for e.g
3.7 kw motor the
FLC is 8 amps. we can select the relay 6A-10A range.
tripping setting is 90 % of FLC
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