Be careful: You may not have the overload protection you think you have. Two new requirements for overload and stall time that were added to the NEMA MG-1 Standard may be in conflict with actual performance requirements for overload relays as specified in the NEMA ICS 2 Standard.What it's aboutIn 1993, NEMA published the current edition of its MG1 standard governing the operating limits of motors.
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