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ANSI C57.12.27 : 1982

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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Withdrawn date

07-23-2013

Published date

01-12-2013

Publisher

National Electrical Manufacturers Association

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.

Committee
NEMA
DocumentType
Standard
PublisherName
National Electrical Manufacturers Association
Status
Withdrawn

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

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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