how to set the overload setting in the thermal overload relay?? is there any c

how to set the overload setting in the thermal overload
relay?? is there any calculation in that??

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how to set the overload setting in the thermal overload relay?? is there any calculation in that??..

Answer / elango k

it is based on the charaterstic of olr
100% to flc can be set it is normal
85% to flc can be set it is sharp
because an olr starts to work 115% of flc
for eg. if a motors flc is 100 amps
i am setting 85amps , the olr starts to work
at 100amps it trips the motor

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13 Yes

6 No

how to set the overload setting in the thermal overload relay?? is there any calculation in that??..

Answer / balasubramaniyan.t

Overload setting in the thermal overload relay to be done based on the motor full load current.The setting current of the relay should not exceed the motor FLC.

Is This Answer Correct ?

12 Yes

7 No

how to set the overload setting in the thermal overload relay?? is there any calculation in that??..

Answer / veerendra

the overload relay setting is donr based on the value of
line current of the motor..
first calculate the line current & set the elay for the same..

Is This Answer Correct ?

4 Yes

9 No

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