IEEE C57.12.20-2011

Name: IEEE C57.12.20-2011
Brand: IEEE

Superseded

View Superseded by

TRANSFORMERS - STANDARD FOR OVERHEAD TYPE DISTRIBUTION TRANSFORMERS, 500 KVA AND SMALLER: HIGH VOLTAGE, 34500 VOLTS AND BELOW: LOW VOLTAGE, 7970/13800Y VOLTS AND BELOW

Available format(s)

Hardcopy , PDF

Superseded date

23-07-2013

Language(s)

English

Published date

01-01-2011

Publisher

Institute of Electrical & Electronics Engineers

1 Scope
2 Referenced and related publications
  2.1 Referenced American National Standards
  2.2 Related publications
3 Ratings
  3.1 Kilovolt-ampere ratings
  3.2 Voltage ratings and tap ratings
4 Basic lightning impulse insulation levels and dielectric
  test levels
5 Tests
  5.1 General
  5.2 Dielectric tests
6 Construction
  6.1 Bushings and terminals
  6.2 Accessory equipment
  6.3 Polarity, terminal markings, and angular displacement
  6.4 Oil preservation
  6.5 Tanks
7 Storage and installation
  7.1 Storage
  7.2 Installation
8 Design tests for fault current capability of overhead
  distribution transformer enclosures
  8.1 Objective
  8.2 Definitions
  8.3 General requirements
  8.4 Tests
  8.5 Test number 1 - an arcing fault in an enclosure
  8.6 Test number 2 - for enclosures with internal fusible
      elements
  8.7 Test results
Annex A (informative) Informational

Ascertains the performance, interchangeability, and safety of the equipment covered, and also assists in the proper selection of such equipment.

DocumentType	Standard
Pages	55
PublisherName	Institute of Electrical & Electronics Engineers
Status	Superseded
SupersededBy	IEEE C57.12.20-2011 REDLINE
Supersedes	IEEE C57.12.20-2005

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