IEEE C57.12.52-2024 PDF
This standard describes electrical and mechanical requirements of single and polyphase sealed dry-type distribution and power transformers or autotransformers, with a voltage of 601 V or higher in the highest voltage winding. This standard applies to all sealed dry-type transformers, including those with solid cast and/or resin-encapsulated windings, except as follows: a) Transformers described as exceptions in IEEE Std C57.12.01™ b) Ventilated transformers c) Nonventilated transformers
This standard describes electrical and mechanical characteristics and requirements of sealed dry-type distribution and power transformers.
Revision Standard – Active. Characteristics are provided in this standard relating to performance, limited electrical and mechanical interchangeability, and guidance to assist in the proper selection of sealed dry-type transformers having a high voltage of at least 601 V. Specific rating combinations are described in the range from 500 kVA to 5000 kVA inclusive, with voltage ratings as described in IEEE Std C57.12.01™. The fill gases used in these sealed dry-type power transformers are not explicitly defined. This standard does not apply to other types of transformers, such as those transformers described as exceptions in IEEE Std C57.12.01, as well as ventilated dry-type and non-ventilated dry-type transformers.
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