IEEE - ANSI C57.12.25
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
|Publication Date:||1 January 1990|
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 standards 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 was 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 National Electrical Manufacturers Association, 2101 L Street, NW, Washington, DC 20037.
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 single-phase, 60-Hz, mineral-oil-immersed
NOTE - Refer to latest federal regulations concerning PCB contamination in transformers.
This standard covers two connector and terminal arrangements for loop feed systems. Either Type 1 (see Figure 1) or Type 2 (see Figure 2) arrangements shall be specified.
This standard does not cover the electrical and mechanical requirements of any accessory devices that may be supplied with the transformer.