【国外标准】 American National Standard for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers With High-Voltage Bushings, 2500 kVA and Smaller; High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 480 Volts and Below

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IEEE/ANSI C57.12.22-1995 [ Withdrawn ]
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标准简介

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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 250… read more 0 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. 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. read less

基本信息

标准号：
IEEE/ANSI C57.12.22-1995 [ Withdrawn ]
标准名称：
American National Standard for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers With High-Voltage Bushings, 2500 kVA and Smaller; High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 480 Volts and Below
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