ANSI C57.12.24 : 2009

Superseded

TRANSFORMERS - UNDERGROUND-TYPE THREE-PHASE DISTRIBUTION TRANSFORMERS, 2500 KVA AND SMALLER; HIGH VOLTAGE, 34 500 GRDY/19 920 VOLTS AND BELOW; LOW VOLTAGE, 480 VOLTS AND BELOW - REQUIREMENTS

Available format(s)

Hardcopy , PDF

Superseded date

08-14-2009

Language(s)

English

Published date

01-01-2009

Publisher

Institute of Electrical & Electronics Engineers

Foreword
1 Scope
2 References
3 Ratings
  3.1 Kilovolt-ampere ratings
  3.2 Voltage ratings and tap ratings
4 Insulation levels
5 Impedance
  5.1 Percent impedance
  5.2 Impedance tolerance
  5.3 Tolerance on impedance on a tap
6 Tests
  6.1 General
  6.2 Reference temperature
7 Construction
  7.1 General
  7.2 Bushings and terminals
      7.2.1 Electrical characteristics
      7.2.2 Neutral terminal connection
  7.3 Accessory equipment and marking requirements
      7.3.1 Liquid-level marking
      7.3.2 Lifting provisions
      7.3.3 Terminal marking
      7.3.4 Nameplate
      7.3.5 Tap changer
  7.4 Tanks
      7.4.1 General
      7.4.2 Covers
      7.4.3 Handholes
      7.4.4 Ground provisions
      7.4.5 Finish
  7.5 Audible sound levels

Describes characteristics relating to performance, limited electrical and mechanical interchangeability, and safety of the equipment described, and to assist in the proper selection of such equipment.

DocumentType	Standard
Pages	26
PublisherName	Institute of Electrical & Electronics Engineers
Status	Superseded
SupersededBy	IEEE C57.12.24-2009
Supersedes	ANSI C57.12.24 : 2000

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