1. Out-of-Step and Single Phasing Protection of Synchronous Chipper Motors.
- Author
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Das, J. C., Steinmetz, Jon D., and McPhee, Aaron A.
- Subjects
SYNCHRONOUS electric motors ,INSTALLATION of equipment ,PAPER mills ,STABILITY (Mechanics) ,IMPACT loads - Abstract
Chipper motors in pulp and paper mill environment are of special design—the stability on impact loads is one important consideration. The power factor under normal operation will continuously swing due to varying loads. This paper describes the guesswork-free rigorous calculations of pull-out (out-of-step) power factor based on the parameter of an actual installation. Single phasing is rather a rare occurrence; however, such an event has been experienced in an installation due to overheating and arcing at the fuse clips in a NEMA E2 starter of a chipper motor. Discussions on the single-phase protection of synchronous motors and recommended settings are provided. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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