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  • ANSI C57.12.27 : 1982

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    LIQUID-FILLED DISTRIBUTION TRANSFORMERS USED IN PAD-MOUNTED INSTALLATIONS INCLUDING UNIT SUBSTATIONS CONFORMANCE STANDARD FOR,

    Available format(s): 

    Withdrawn date:  23-07-2013

    Language(s): 

    Published date:  12-01-2013

    Publisher:  National Electrical Manufacturers Association

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    Abstract - (Show below) - (Hide below)

    Covers requirements when exposed to public, less than 2500 kVA with high-voltage not exceeding 38 kV(35-kV voltage class) and low-voltage not exceeding 17.2 kV(15-kV voltage class). Insulating liquids normally limited to those in ANSI/IEEE C57.12.00-1980. Overhead-type distribution transformers mounted in surface enclosure not included. Does not cover installations under control of electric utilities.

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

    Committee NEMA
    Document Type Standard
    Publisher National Electrical Manufacturers Association
    Status Withdrawn

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

    IEEE C37.121-2012 GUIDE FOR SWITCHGEAR - UNIT SUBSTATION - REQUIREMENTS
    IEEE C37.121-2012 REDLINE IEEE Guide for Switchgear - Unit Substation - Requirements

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

    IEEE C57.12.10-2010 TRANSFORMERS - 230 KV AND BELOW 833/958 THROUGH 8333/10 417 KVA, SINGLE-PHASE, AND 750/862 THROUGH 60 000/80 000/100 000 KVA, THREE-PHASE WITHOUT LOAD TAP CHANGING; AND 3750/4687 THROUGH 60 000/80 000/100 000 KVA WITH LOAD TAP CHANGING - SAFETY REQUIREMENT
    IEEE C57.12.20-2011 TRANSFORMERS - STANDARD FOR OVERHEAD TYPE DISTRIBUTION TRANSFORMERS, 500 KVA AND SMALLER: HIGH VOLTAGE, 34500 VOLTS AND BELOW: LOW VOLTAGE, 7970/13800Y VOLTS AND BELOW
    ANSI C57.12.25 : 1990 TRANSFORMERS - PAD-MOUNTED, COMPARTMENTAL-TYPE, SELF-COOLED, SINGLE-PHASE DISTRIBUTION TRANSFORMERS WITH SEPARABLE INSULATED HIGH-VOLTAGE CONNECTORS; HIGH VOLTAGE, 34 500 GRDY/19 920 VOLTS AND BELOW; LOW VOLTAGE, 240/120 VOLTS; 167 KVA AND SMALLER - REQUIREMENTS
    IEEE C57.12.00-2015 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
    IEEE C57.12.90-2010 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
    NFPA 70 : 2017 NATIONAL ELECTRICAL CODE
    IEEE C57.12.70-2011 IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers
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