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IEEE/ANSI C57.12.25-1990

Current Revision

American National Standard for 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) and Low-Voltage (240/120 Volts; 167 kVA and Smaller)

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New IEEE Standard - Inactive-Withdrawn. This standard covers certain electrical, dimensional, and mechanical characteristics, and takes into consideration certain safety features of single-phase, 60-Hz, mineral-oil-immersed, self-cooled, pad-mounted, compartmental-type distribution transformers with separable insulated high-voltage connectors. These transformers are rated 167 kVA and smaller, with high voltages of 34500 GrdY/19 920 volts and below for operation between one phase and grounded neutral, and low voltages of 240/120 volts. These transformers are generally used for step-down purposes from an underground primary cable supply.
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.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.12.25
Publication Date Nov. 30, 2002
Language en - English
Page Count 12
Revision Level
Supercedes
Committee Transformers
Publish Date Document Id Type View
Nov. 30, 2002 C57.12.25-1990 Revision