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Standard

IEEE C37.20.2-1993

Revised

Note: Latest version: IEEE C37.20.2-2022

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Abstract

Revision Standard - Superseded. Metal-enclosed medium voltage switchgear (ME), which can contain either drawout electrically operated circuit breakers or stationary electrically operated circuit breakers in individual three-pole grounded metal compartments, is covered. Further, metal-clad switchgear (MC) is compartmentalized to isolate all components such as instrumentation, main bus, and both incoming and outgoing connections with grounded metal barriers. Rated maximum voltage levels for metal-clad switchgear (MC) range from 5 kV through 38 kV with main bus continuous current ratings of 1200 A, 2000 A, and 3000 A. Rated maximum voltage levels for station-type cubicle switchgear (SC) range from 15.5 kV through 72.5 kV with main bus continuous current ratings of 2000 A, 3000 A, 4000 A, and 5000 A. ME switchgear also contains associated control, instruments, metering, relaying, protective, and regulating devices as necessary. Service conditions, ratings, temperature limitations, and classification of insulating materials, insulation (dielectric) withstand voltage requirements, test procedures, and application are discussed.

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 C37.09-1999/Cor 1-2007
  • Referred by: IEEE C37.22-2003
  • Refers: IEEE C37.06-2000
  • Revised by: IEEE C37.20.2-1999
  • Referred by: IEEE C37.37-1996
  • Referred by: IEEE C37.20.6-1997
  • Referred by: IEEE C37.34-1994
  • Refers: IEEE 344-1987
  • Revises: IEEE C37.20.2-1987
  • Refers: IEEE C37.04-1979
  • Refers: ASTM D229-91, Standard Method of Testing Rigid Sheet and Plate Materials Used for Electrical Insulation.
  • Refers: ASTM B117-90, Standard Test Method of Salt Spray (FOG) Testing.
  • Refers: ANSI Z535.4-1991, American National Standard for Product Safety Signs and Labels.
  • Refers: ANSI/UL 486A-1991, Wire Connectors and Soldering Lugs for Use With Copper Conductors.
  • Refers: ANSI/NFPA 70-1993, National Electrical Code.
  • Refers: ASTM D714-87, Standard Method for Evaluating Degree of Blistering of Paints.
  • Refers: ASTM D1535-89, Standard Method for Specifying Color by The Munsell System.