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American National Standard for transformers : standard for overhead type distribution transformers, 500 kVA and smaller : high voltage 34500 volts and below : low voltage, 7970/13800Y volts and below

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ISBN/ISSN 9780738136233
Broad Subject Electrical & electronic engineering
General - Engineering & Technology
Subject Electric transformers - Standards
Summary Superseded by IEEE Std C57.12.20-2005. This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of single- and three-phase, 60-Hz, mineral-oil-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, with high voltages 34500 volts and below and low voltages 7970/13800Y volts and below. Such transformers may include one or more of the following features: 1) High-voltage, overcurrent protection; 2) High-voltage, overvoltage protection. 3) Low-voltage, overcurrent protection; 4) Low-voltage, overvoltage protection.
Language English
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