One of the issues that may be experienced after installing a new Motor is sometimes referred to as “nuisance trips.” Although they certainly can be a nuisance, could it be that they are the sign of something more serious taking place? After all, when something is new, that doesn’t always mean that it is of the highest quality.
Tip of the Week
The first thing you should do is look for the NEMA Code Letter (it should be located on the nameplate). The letter helps when you calculate the design locked rotor or In-Rush current for that particular motor.
Perform an in-rush/start-up test to determine the actual in-rush current. This test allows you to determine if the actual current is exceeding the design current. If it isn’t, you can focus your troubleshooting efforts on the trip relay settings.
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