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IEEE C57.12.20-2023

Current Revision

IEEE Standard for Overhead-Type Distribution Transformers 500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 7970/13 800Y V and Below

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Revision Standard - Active. Certain electrical, dimensional, and mechanical characteristics and safety features of single- and three-phase, 60-Hz, liquid-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, high voltages 34 500 V and below, and low voltages 7970/13 800Y V and below are covered in this standard.
This standard covers certain electrical, dimensional, and mechanical characteristics and safety features of single- and three-phase, 60-Hz, liquid-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, high voltages 34 500 V and below, and low voltages 7970/13 800Y V and below.
This standard is intended for use as a basis for determining the performance, interchangeability, and safety of overhead-type distribution transformers and to assist in the proper selection of this equipment.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.12.20
Publication Date Feb. 1, 2024
Language en - English
Page Count 54
Revision Level
Supercedes
Committee Transformers
Publish Date Document Id Type View
Feb. 1, 2024 C57.12.20-2023 Revision
Nov. 30, 2017 C57.12.20-2017 Revision
Sept. 20, 2011 C57.12.20-2011 Revision
Dec. 9, 2005 C57.12.20-2005 Revision