• ANSI C57.12.24 : 2009

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    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    Superseded date:  14-08-2009

    Language(s):  English

    Published date:  01-01-2009

    Publisher:  Institute of Electrical & Electronics Engineers

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher Institute of Electrical & Electronics Engineers
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    IEEE 141 : 1993 IEEE Recommended Practice for Electric Power Distribution for Industrial Plants
    IEEE C57.12.32-2002 SUBMERSIBLE EQUIPMENT - ENCLOSURE INTEGRITY
    IEEE DRAFT C57.12.90 : D5.1 98 DRAFT STANDARD TEST CODE FOR LIQUID-IMMERSED DISTRIBUTION, POWER, AND REGULATING TRANSFORMERS
    ANSI C37.121 : 2012 AMERICAN NATIONAL STANDARD FOR SWITCHGEAR - UNIT SUBSTATIONS - REQUIREMENTS
    IEEE 1585 : 2002 FUNCTIONAL SPECIFICATION OF MEDIUM VOLTAGE (1-35 KV) ELECTRONIC SERIES DEVICES FOR COMPENSATION OF VOLTAGE FLUCTUATIONS
    IEEE 1388 : 2000 IEEE STANDARD FOR THE ELECTRONIC REPORTING OF TRANSFORMER TEST DATA

    Standards Referencing This Book - (Show below) - (Hide below)

    IEEE C57.12.32-2002 SUBMERSIBLE EQUIPMENT - ENCLOSURE INTEGRITY
    IEEE 386-2016 SEPARABLE INSULATED CONNECTOR SYSTEMS FOR POWER DISTRIBUTION SYSTEMS RATED 2.5 KV THROUGH 35 KV
    IEEE C57.12.00-2015 STANDARD FOR GENERAL REQUIREMENTS FOR LIQUID-IMMERSED DISTRIBUTION, POWER, AND REGULATING TRANSFORMERS
    IEEE C57.91:2011 GUIDE FOR LOADING MINERAL-OIL-IMMERSED TRANSFORMERS AND STEP-VOLTAGE REGULATORS
    IEEE C57.12.90-2010 LIQUID-IMMERSED DISTRIBUTION, POWER, AND REGULATING TRANSFORMERS
    IEEE C57.12.70-2011 STANDARD TERMINAL MARKINGS AND CONNECTIONS FOR DISTRIBUTION AND POWER TRANSFORMERS
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