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IEEE C37.21

Control Switchboards

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Organization: IEEE
Publication Date: 23 March 2017
Status: active
Page Count: 34
scope:

This standard covers ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation, metering, monitoring, protective and auxiliary relays, and regulating devices and accessories

It includes, but is not specifically limited to, switchboards for the control and protection of apparatus used for or associated with power generation, conversion, transmission, and distribution

It does not apply to industrial controls, communication equipment, switchboards for use onboard ships, or Class 1E switchboards for use in nuclear generating stations, nor does it address human factor considerations

In this standard, dead-front control switchboards shall be called control switchboards

Document History

June 1, 2019
Draft Standard for Control Switchboards Amendment 1 Control and Secondary Circuits and Devices, and All Wiring
Abstract: This amendment addresses the requirements for control, secondary, and logic-level wiring. It covers wire type, ampacity, and methods for protecting wiring across a hinge.
IEEE C37.21
March 23, 2017
Control Switchboards
This standard covers ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation, metering,...
September 9, 2005
Control Switchboards
This standard covers ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation, metering,...
June 9, 2005
Standard for Control Switchboards
Overview This standard covers ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation,...
January 1, 1985
Standard for Control Switchboards
A description is not available for this item.

References

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