IEEE C37.92-1969
ANSI American National Standard Guide for Induction Motor protection
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About This Item
C37.92-1969 is the ANSI American National Standard Guide for Induction Motor protection, focused on engineering practices for power, energy, and industrial applications. C37.92-1969 addresses the protection of induction motors used in components, circuits, devices, and systems where reliable operation and fault response are important. It is a useful technical reference for understanding protection-related considerations that can affect motor performance, equipment longevity, and system coordination in industrial electrical installations.
Overview of C37.92-1969
This standard provides guidance for protecting induction motors in electrical power systems, with attention to the conditions and devices that influence safe and dependable operation. It is relevant where motor protection must be coordinated with circuits, switching equipment, and related control components. As a superseded technical document, C37.92-1969 remains important for historical reference, legacy system review, and comparison of older protection practices with later engineering approaches in motor-driven installations.
Typical use cases
C37.92-1969 is typically consulted when evaluating induction motor protection in industrial plants, utility-connected equipment, and other installations that rely on continuous motor service. It may support selection or review of protective functions for feeders, starters, relays, and associated control gear. The guide is especially relevant in environments where motor loads must be coordinated with power-system devices to limit damage from overloads, faults, abnormal starting conditions, or interrupted operation.
Why it matters
Motor protection has a direct effect on equipment availability, safety, and maintenance cost. C37.92-1969 helps users apply a consistent basis for design and review, reducing the risk of miscoordination or inadequate protection in induction motor applications. For procurement, engineering, and plant documentation, it can also provide a clear reference point when comparing legacy installations or specifying protection expectations for motors used in power and industrial systems.
- Induction motor protection guidance
- Industrial power-system applications
- Legacy or superseded reference use
- Coordination with circuits and devices
- Protection-focused engineering review
- Publication Date: 1968
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
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