Superseded Standard

ANSI C57.1, C57.2 C57.3-1940

ANSI Proposed American Standards transformers, Regulators, and Reactors, Proposed American Recommended Practices Test Code for transformers, Regulators, and Reactors, guides for Operation of Transformers

These standards apply to the following general classes of apparatus: Distribution and Power Transformers Instrument Transformers Constant-Current Transformers Step-Voltage and Induction-Voltage Regulators Current-Limiting Reactors Transformers for which these standards do not apply are auto-transformers used as part of autostarters, testing transformers, welding transformers, auxiliary transformers for series street lighting and small transformers such as those used for luminous-tube signs and miscellaneous commercial and household devices.

Status
Superseded Standard

Working Group Details

Other Activities From This Working Group

Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.


No Active Projects

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These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.


No Superseded Standards

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These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.


No Inactive-Reserved Standards
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