Motor Protection for Valve Actuators
- 1 January 1978
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industry Applications
- Vol. IA-14 (1) , 23-26
- https://doi.org/10.1109/TIA.1978.4503484
Abstract
Valve actuator motors as a category have never really been defined by NEMA, NEC, or any other group. Moreover, NEC Section 430-33 states that intermittent-duty motors need not have motor protection. As a result, the decision to protect motors and the selection of protector type are both left to the specifying engineer or the manufacturer. A guideline is presented to help the engineer and the manufacturer make both decisions. Our recommendations are based on field experience confirmed by laboratory testing.Keywords
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