Addressing nuisance tripping of instantaneous trip breakers in high efficiency motor applications

Heberlein, G.E.

doi:10.1109/papcon.1989.36935

Cited by 16 publications

(1 citation statement)

References 1 publication

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“…To address this issue a number of actions have been taken [7]. First, when such nuisance tripping became a significant problem in the late 1980's with the high efficiency NEMA Design B motors, some instantaneous trip circuit breakers were redesigned to incorporate a "damping means."…”

Section: Breaker Other Thanmentioning

confidence: 99%

NEMA Design E motors and controls

Kilburn

Daugherty²

1998 IEEE Annual Textile, Fiber and Film Industry Technical Conference (Cat. No.98CH36246)

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While considerable information has been published on the new NEMA design " E motors themselves, little attention has been given to the associated equipment used to control them. This paper will first discuss the motor design and related topics and then move to the unique issues that Design E motors present to the control and protection devices used with them.Issues to be covered include: The characteristics of NEMA Design E motors, the impact of the 1997 Federal Mandate on energy efficient motors, UL and NEC ramifications on control and protection equipment for use with NEMA Design E motors and the potential for nuisance tripping of overload relays and instantaneous circuit breakers when used on Design E motors.

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Section: Breaker Other Thanmentioning

confidence: 99%