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Standard

IEEE C37.21-2017

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Abstract

Revision Standard - Active. Ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation, metering, monitoring, alarms, annunciators, protective and auxiliary relays, and regulating devices and accessories are covered in this standard. 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. Types of switchboards may include control, vertical, dead-front, enclosed, dual, or duplex switchboards. Other construction types include control desks, consoles, benchboards, dual or duplex benchboards, fixed rack, cabinet, and swing rack cabinets. It does not apply to industrial controls, communication equipment, switchboards for use on board ships, or Class 1E switchboards for use in nuclear generating stations.

Products specifications

  • Standard from IEEE
  • Published:
  • Document type: IS
  • Pages
  • Publisher: IEEE
  • Distributor: IEEE
  • ICS: 29.130.99
  • National Committee: IEEE Power and Energy Society / Switchgear

Product Relations

  • Referred by: IEEE C37.30.6-2023
  • Referred by: IEEE C37.122-2021
  • Referred by: IEEE C37.24-2017
  • Revises: IEEE C37.21-2005
  • Refers: ASTM D229, Standard Test Method for Rigid Sheet and Plate Materials Used for Electrical Insulation.
  • Refers: ASTM D714, Standard Test Method for Evaluating Degree of Blistering of Paints.
  • Refers: ASTM D1535, Standard Practice for Specifying Color by the Munsell System.
  • Refers: ASTM B117, Standard Practice for Operating Salt Spray (Fog) Apparatus.