Superseded by IEEE Std C57.12.44-2005. The performance, electrical and mechanical interchangeability, and the safety of the equipment are covered. The proper selection of such equipment is established as a basis…
This IEEE Standards product is part of the C57 family on Power Distribution and Regulating Transformers. A test procedure for determining the temperature classification of ventilated dry-type power and distribution…
General recommendations for measuring voltage transients in dry-type distribution and power transformer are provided. Recurrent surge voltage generator circuitry, instrumentation, test sample, test point location, mounting the test coil, conducting…
Recommendations for the application of overcurrent protective devices to limit the exposure time of dry-type transformers to short circuits are provided. The transformer coordination curves in this guide pertain to…
A uniform method is established for determining the temperature classification of solidcast and resin-encapsulated power and distribution transformer insulation systems by testing rather than by chemical composition. These insulation systems…
A uniform method is established for determining the temperature classification of solid- cast and resin-encapsulated power and distribution transformer insulation systems by testing rather than by chemical composition. These insulation…
Supersedes C57.12.70-1978 (R1992). Standard terminal markings and connections are described for single-phase and three-phase distribution,power,and regulating transformers.For terminal markings,it covers sequence designation, external terminal designation, neutral terminal designation, grounded terminal…
This revision of ANSI C57.12.80 incorporates a substantial number of changes since the last major revision occurred in 1958. In addition to providing many new terms, some of the more…
