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Standard

IEEE C57.12.20-1997

Revised

Note: Now under development: IEEE C57.12.20-2023

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Abstract

New IEEE Standard - Superseded. Superseded by IEEE Std C57.12.20-2005.This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of single- and three-phase, 60-Hz, mineral-oil-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, with high voltages 34500 volts and below and low voltages 7970/13800Y volts and below. Such transformers may include one or more of the following features: 1) High-voltage, overcurrent protection; 2) High-voltage, overvoltage protection. 3) Low-voltage, overcurrent protection; 4) Low-voltage, overvoltage protection

Products specifications

  • Standard from IEEE/ANSI
  • Published:
  • Document type: IS
  • Pages
  • Publisher: IEEE/ANSI
  • Distributor: IEEE/ANSI
  • National Committee: IEEE Power and Energy Society / Transformers

Product Relations

  • Revised by: IEEE C57.12.20-2005
  • Refers: IEEE C135.1-1999
  • Referred by: IEEE PC57.12.28
  • Refers: IEEE C57.91-1995
  • Refers: IEEE C37.41-1994
  • Refers: IEEE C57.12.90-1993
  • Refers: IEEE C37.40-1993
  • Refers: IEEE C57.12.00-1993
  • Referred by: IEEE C57.12.22-1995
  • Refers: IEEE C57.12.80-1978
  • Refers: MIL-STD-209C, Swinging Eyes and Attachments for Lifting and Tying Down Military Equipment. (available from Commanding Officer, Naval Publications and Forms, 5801 Tabor Avenue, Philadelphia, PA 19120).
  • Refers: NEMA MG2, Safety Standard for Construction and Guide for Selection, Installation, and Use of Electric Motors (available from National Electrical Manufacturers Association, 1300 North 17th Street, Suite 1847, Rosslyn, Virginia 22209).
  • Refers: NEMA TR 1, Transformers, Regulators, and Reactors (available from National Electrical Manufacturers Association, 1300 North 17th Street, Suite 1847, Rosslyn, Virginia 22209).