1878750

IEEE/ANSI C57.12.20-1997

American National Standard for Transformers - Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller: High Voltage 34500 Volts and Below: Low Voltage, 7970/13800Y Volts and Below

standard by IEEE/ANSI , 11/30/2002

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Full Description

Scope

This standard is intended for use as a basis for determining the performance, interchangeability, and safety of the equipment covered, and to assist in the proper selection of such equipment.

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New IEEE Standard - Superseded. Superseded by IEEE Std C57.12.20-2005.This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety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
 

Product Details

Published:
11/30/2002
ISBN(s):
9780738136233
Number of Pages:
51
File Size:
1 file , 730 KB
Product Code(s):
STDSU95107
Note:
This product is unavailable in Russia, Belarus
 

Document History

  1. IEEE C57.12.20-2023


    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

    • Most Recent

  2. IEEE C57.12.20-2017


    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

    • Historical Version

  3. IEEE C57.12.20-2011


    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

    • Historical Version

  4. IEEE C57.12.20-2005


    Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller: High Voltage, 34500 Volts and Below; Low Voltage, 7970/13800Y Volts and Below

    • Historical Version

  5. IEEE/ANSI C57.12.20-1997

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    American National Standard for Transformers - Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller: High Voltage 34500 Volts and Below: Low Voltage, 7970/13800Y Volts and Below

    • Historical Version