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IEEE C57.12.23-1992

Historical Revision

IEEE Standard for Submersible Single-Phase Transformers:250 kVA and Smaller; High Voltage 34 500 GrdY/19 920 V and Below; Low Voltage 600 V and Below

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New IEEE Standard - Superseded. Electrical, dimensional, and mechanical characteristics and certain safety features of single-phase, 60 Hz, mineral-oil-immersed, self-cooled, distribution transformers with separable insulated high-voltage connectors are covered. Ratings, testing, and construction are discussed. These transformers are generally used for step-down purposes from an underground primary cable supply and are suitable for occasional submerged operation. The intent is to provide a basis for determining their performance, interchangeability, and safety, and for their selection. This standard does not cover the electrical and mechanical requirements of accessory devices that may be supplied with the transformer
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, self-cooled, distribution transformers with separable insulated high-voltage connectors. These transformers are rated 167 kVA and smaller, with high voltages of 24 940 Grd Y/14 400 V and below for operation between one phase and grounded neutral and with low voltages of 240/120 V. These transformers are generally used for step down purposes from an underground primary cable supply and are suitable for occasional submerged operation. NOTE — Refer to latest federal regulations concerning polychlorinated biphenyl (PCB) contamination in transformers.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.12.23
Publication Date Nov. 25, 1992
Language en - English
Page Count 16
Revision Level
Supercedes
Committee Transformers
Publish Date Document Id Type View
Aug. 20, 2019 C57.12.23-2018 Revision
April 30, 2009 C57.12.23-2009 Revision
Aug. 8, 2002 C57.12.23-2002 Revision
Nov. 25, 1992 C57.12.23-1992 Revision