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PC57.12.00 - Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers

This standard is a basis for the establishment of performance, and limited electrical and mechanical interchangeability requirements of the equipment are described. It is also a basis for assistance in the proper selection of such equipment.This standard describes electrical and mechanical requirements of liquid-immersed distribution and power transformers, and autotransformers and regulating transformers, single-phase and polyphase, with voltages of 601 V or higher in the highest voltage winding. This standard applies to all liquid-immersed distribution, power, and regulating transformers that do not belong to the following types of apparatus: a) Instrument transformers; b) Step voltage and induction voltage regulators; c) Arc furnace transformers; d) Rectifier transformers; e) Specialty transformers; f) Grounding transformers; g) Mobile transformers; h) Mine transformers
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