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Do you need to take into consideration the service factor of the motor when setting the trip range on the Solid State Motorlogic overload relay?

Published date: 21 June 2020

Issue:
Setting the FLA on solid state overload

Product Line:
NEMA and Definite Purpose Contactors and Starters

Environment:
9065 Solid State Overload relay

Resolution:
If the  motor has a service factor of 1.0, then you would set the dial to 90% of the motor's full load current.
The solid state overload has a built in service factor of 1.15 - 1.25. If the motor has a service factor of 1.15 - 1.25,
set the dial to the motor's full load current rating. All other service factor ratings will need to be calculated by the motor manufacturer.


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