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Standard

IEEE C37.21-1985

Revised

Note: Latest version: IEEE C37.21-2017

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Existing or new amendments and versions must be purchased separately.

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Abstract

New IEEE Standard - Superseded. 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 are covered. Switchboards for the control and protection of apparatus used for or associated with power generation, conversion, transmission, and distribution are included, but the standard is not limited to these. Industrial controls, communication equipment, switchboards for use on board ships, Class 1E switchboards for use in nuclear generating stations, and human factors are not considered.

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

  • Revised by: IEEE C37.21-2005
  • Refers: IEEE C37.90.1-1974
  • Refers: ANSI/NFPA 70-1987, National Electrical Code.
  • Refers: ANSI/NEMA ICS1-1983, General Standards for Industrial Control and Systems
  • Refers: ANSI Z55.1-1967 (R 1973), American National Standard Gray Finishes for Industrial Apparatus and Equipment
  • Refers: ANSI/UL 44-1985, Safety Standard for Rubber-Insulated Control and Systems