Standard: IEEE - ANSI C57.12.22

TRANSFORMERS - PAD-MOUNTED, COMPARTMENTAL-TYPE, SELF-COOLED THREE-PHASE DISTRIBUTION TRANSFORMERS WITH HIGH-VOLTAGE BUSHINGS, 2500 KVA AND SMALLER: HIGH VOLTAGE, 34 500 GRD Y/19 920 VOLTS AND BELOW; LOW VOLTAGE, 480 VOLTS AND BELOW

This standard is available for individual purchase.

or unlock this standard with a subscription to IHS Standards Expert

IHS Standards Expert subscription, simplifies and expedites the process for finding and managing standards by giving you access to standards from over 370 standards developing organizations (SDOs).

FEATURES & BENEFITS
  • Maximize product development and R&D with direct access to over 1.6 million standards
  • Discover new markets: Identify unmet needs and discover next-generation technologies
  • Improve quality by leveraging consistent standards to meet customer and market requirements
  • Minimize risk: Mitigate liability and better understand compliance regulations
  • Boost efficiency: Speed up research, capture and reuse expertise
For additional product information, visit the IHS Standards Expert page.

HOW TO SUBSCRIBE
For more information or a custom quote, visit the IHS Contact Us page for regional contact information.
Scope:

Foreward

The Accredited Standards Committee on Transformers, Regulators, and Reactors, C57, has for many years been developing and correlating standards on transformers and regulators. The data used in this work have been gathered from many sources, including the standard of the Institute of Electrical and Electronics Engineers and the National Electrical Manufacturers Association, reports of committees of the Edison Electric Institute, and others.

This standard and the companion standard on single-phase transformers (ANSI C57.12.21) were prepared by the Subcommittee on Distribution Transformers, Overhead and Pad-mounted, C57.12.2.

Suggestions for improvement of this standard will be welcome. They should be sent to the American National Standards Institute, 1430 Broadway, New York, 10018.

Scope

This standard is intended for use as a basis for determining performance, interchangeability, and safety of the equipment covered, and to assist in the proper selection of such equipment.

This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of three-phase, 60 Hz., mineral-oil-immersed, self-cooled, padmounted, compartmental-type distribution transformers with high-voltage bushings. These transformers are rated 2500 kVA and smaller, with high voltages of 34 500 GrdY/19 920 volts and below, and with low voltages of 480 volts and below. These transformers are generally used for step-down purposes from an underground primary cable supply.

NOTE—Refer to latest federal regulations concerning PCB contamination in transformers.

This standard covers the bushing and terminal arrangements for radial feed systems. Either certain minimum dimensions (see figures 1-3) or certain specific dimensions (see figures 4-6) shall be specified.

This standard does not cover the electrical and mechanical requirements of any accessory devices that may be supplied with the transformer.

Organization: The Institute of Electrical and Electronics Engineers, Inc.
Document Number: ansi c57.12.22
Publish Date: 1993-01-01
Page Count: 24
Change Type: REAF
Available Languages: EN
DOD Adopted: NO
ANSI Approved: YES
Most Recent Revision: YES
Current Version: NO
Status: Inactive

Document History

Document # Change Type Update Date Revision Status
ANSI C57.12.22 Change Type: Update Date: 1989-01-01 Revision: 89 Status: INAC
ANSI C57.12.22 Change Type: Update Date: 1980-01-01 Revision: 80 Status: INAC

Standards That Reference This Standard

Showing 10 of 10.


Advertisement
Advertisement
Advertisement
Advertisement