• ANSI C57.12.52 : 2012

    Current The latest, up-to-date edition.

    Sealed Dry-Type Power Transformers, 501 kVA and Higher, Three-Phase, with High-Voltage 601 to 34500 Volts, Low-Voltage 208Y/120 to 4160 Volts—General Requirements

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-03-2013

    Publisher:  Institute of Electrical & Electronics Engineers

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

    1. Scope
        1.1
        1.2
        1.3
        1.4
        1.5
    2. Related Standards and Guides
        2.1 General
        2.2 Terminology
        2.3 Revision of American National Standards
             Referred to in This Document
    Part I: Basic Electrical and Mechanical Requirements
    3. Usual Service Conditions
    4. Ratings and Characteristics
        4.1 Kilovolt-Ampere Ratings
        4.2 Kilovolt-Ampere and Voltage Ratings
        4.3 Taps
        4.4 Insulation Levels
        4.5 Angular Displacement and Terminal Markings
        4.6 Percent Impedance Voltage
    5. Construction
        5.1 Insulation System
        5.2 Accessory Location
        5.3 Nameplate
        5.4 Transformer Connections
        5.5 Tap Changer
        5.6 Temperature Indication
        5.7 Pressure-Vacuum Gauge
        5.8 Shutoff Valve
        5.9 Filling Valve
        5.10 Tank
    6. Routine Tests
    7. Tolerances
    Part II: Other Requirements or Alternatives That May Be
             Specified for Some Applications
    8. Other Ratings and Char
        8.1 Other Ambient Temperature Conditions
        8.2 Other Winding Temperature Rises
        8.3 Other Insulation Systems
        8.4 Other High-Voltage Ratings and Connections
        8.5 Y-Y Connected Transformers
        8.6 Increased Neutral Insulation
        8.7 Other Basic Lightning Impulse Insulation Levels
             (BILs)
    9. Other Construction
        9.1 High-Voltage Connection Arrangements
        9.2 Low-Voltage Connection Arrangements
        9.3 Surge Arresters
        9.4 Unit Substation
        9.5 Pressure Alarm Switch
        9.6 High-Temperature Alarm Switch
        9.7 Current Transformers (or Provision for Their
             Addition in the Future)
        9.8 Terminal Blocks
        9.9 Contacts
    10. Other Tests

    Abstract - (Show below) - (Hide below)

    This standard is for sealed dry-type transformers, 501 kVA and larger, with high-voltage 601 to 34500 volts inclusive and low-voltage 208Y/120 to 4160 volts inclusive.

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

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

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

    IEEE 141 : 1993 IEEE Recommended Practice for Electric Power Distribution for Industrial Plants
    IEEE C57.94-1982 IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type General Purpose Distribution and Power Transformers
    IEEE DRAFT C57.12.91 : D3 2000 DRAFT STANDARD TEST CODE FOR DRY-TYPE DISTRIBUTION AND POWER TRANSFORMERS
    IEEE 3001.5-2013 IEEE Recommended Practice for the Application of Power Distribution Apparatus in Industrial and Commercial Power Systems
    IEEE DRAFT C57.12.01 : D6 2005 GENERAL REQUIREMENTS FOR DRY-TYPE DISTRIBUTION AND POWER TRANSFORMERS INCLUDING THOSE WITH SOLID-CAST AND/OR RESIN ENCAPSULATED WINDINGS
    IEEE C57.12.50 : 1981 REQUIREMENTS FOR VENTILATED DRY-TYPE DISTRIBUTION TRANSFORMERS, 1 TO 500 KVA, SINGLE-PHASE, AND 15 TO 500 KVA, THREE-PHASE, WITH HIGH-VOLTAGE 601 TO 34500 VOLTS, LOW-VOLTAGE 120 TO 600 VOLTS
    IEEE C37.121-2012 GUIDE FOR SWITCHGEAR - UNIT SUBSTATION - REQUIREMENTS
    IEEE C57.12.91-2011 IEEE Standard Test Code for Dry-Type Distribution and Power Transformers
    IEEE C57.12.70-2011 IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers
    IEEE C37.121-2012 REDLINE IEEE Guide for Switchgear - Unit Substation - Requirements

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

    IEEE C57.12.51-2008 REQUIREMENTS FOR SEALED DRY-TYPE POWER TRANSFORMERS, 501 KVA AND LARGER, THREE-PHASE, WITH HIGH-VOLTAGE 601 TO 34500 VOLTS, LOW-VOLTAGE 208Y/120 TO 4160 VOLTS
    IEEE C57.12.01-2015 REDLINE IEEE Standard for General Requirements for Dry-Type Distribution and Power Transformers
    ANSI B2.1 : LATEST PIPE THREADS (EXCEPT DRYSEAL)
    IEEE C57.12.70-2011 IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers
    IEEE C57.12.91-2011 IEEE Standard Test Code for Dry-Type Distribution and Power Transformers
    IEEE C57.94-1982 IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type General Purpose Distribution and Power Transformers
    IEEE C57.12.50 : 1981 REQUIREMENTS FOR VENTILATED DRY-TYPE DISTRIBUTION TRANSFORMERS, 1 TO 500 KVA, SINGLE-PHASE, AND 15 TO 500 KVA, THREE-PHASE, WITH HIGH-VOLTAGE 601 TO 34500 VOLTS, LOW-VOLTAGE 120 TO 600 VOLTS
    IEEE C57.105-1978 IEEE Guide for Application of Transformer Connections in Three-Phase Distribution Systems
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