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How to set an overload in a motor?

Answers were Sorted based on User's Feedback



How to set an overload in a motor?..

Answer / vinod g

Over load relay is setting normaly at 100% of rated
current, also we can set at reduced current if load current
less and constant.Also overload relay have AUTO & MANUAL
Reset mode. ie in AUTO it get reset automatically with time
delay based on motor temprature reduction. Manual mode we
have to reset on every trip.

Is This Answer Correct ?    2 Yes 0 No

How to set an overload in a motor?..

Answer / siva24381

First we decide motor full load amphere(or name plate) and
take actual load amphere. If 3HP motor full load amphere is
4.5A but actual load is 3.0A so we set OLR rating 3.5A.

Is This Answer Correct ?    0 Yes 5 No

How to set an overload in a motor?..

Answer / jaspreet singh

over load relay =1.5*full load current.example for 1 h.p
motor takes 1.5 Amp current so its overload relay is setted
at approximate on 2.5 amp

Is This Answer Correct ?    1 Yes 6 No

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