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IEEE/ANSI C37.92-1969

Current Revision

ANSI American National Standard Guide for Induction Motor protection

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New IEEE Standard - Superseded.
The application guide for relay protection of squirrel-cage and wound-rotor induction motors presents a review of the generally accepted forms of motor protection and summarizes the use of relays and devices, singly and in combination, to enable the reader to properly select the necessary equipment to obtain adequate motor protection. The Guide is prepared primarily for the protection of three-phase integral-horsepower motors and refers to single- or two-phase motors only in special instances and only where specifically indicated. It is especially useful where the motor installation is sufficiently important, due to either its size or the consequences of motor malfunction, to justify specific design of the protective system. It also provides the information necessary to judge whether there are safety or economic reasons for such a specific design. This Guide is not a Standard and does not purport to detail the protective requirements of all motors in every situation. Its recommendation is of a general nature designed to cover the usual or typical motor installation. Sufficient background of material on objectives, application, and setting philosophy is presented, however, to enable the reader to evaluate the need for various forms of protection and to select and properly apply suitable protective equipment for most situations.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C37.92
Publication Date Nov. 30, 1968
Language en - English
Page Count 32
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
Nov. 30, 1968 C37.92-1969 Revision