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IEEE C57.12.20-2011 REDLINE

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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
Available format(s)

PDF

Superseded date

30-11-2017

Language(s)

English

Published date

20-09-2011

1. Overview
2. Normative references
3. Definitions
4. Ratings
5. Basic lightning impulse insulation levels and
   dielectric test levels
6. Tests
7. Construction
8. Storage and installation
9. Design tests for fault current capability of
   overhead distribution transformer enclosures
Annex A (informative) - Auxiliary mounting devices
Annex B (informative) - Flow chart for fault current
                        capability tests
Annex C (informative) - Bibliography

This standard covers certain electrical, dimensional, and mechanical characteristics and safety features of single- and three-phase, 60-Hz, mineral-oil-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.

Committee
Transformers
DevelopmentNote
Supersedes IEEE DRAFT C57.12.20. (12/2005) Supersedes ANSI C57.12.20. (01/2011)
DocumentType
Standard
ISBN
978-0-7381-6689-6
Pages
75
PublisherName
Institute of Electrical & Electronics Engineers
Status
Superseded
SupersededBy
Supersedes

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IEEE C57.12.31-2010 IEEE Standard for Pole-Mounted Equipment--Enclosure Integrity
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IEEE C57.12.40-2017 IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed)
IEEE C57.12.24-2016 REDLINE IEEE Standard for Submersible, Three-Phase Transformers, 3750 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 600 Volts and Below
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IEEE C57.12.31-2010 IEEE Standard for Pole-Mounted Equipment--Enclosure Integrity
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