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C57.21-1981  -  IEEE Standard Requirements, Terminology, and Test Code for Shunt Reactors Over 500 kVa

Superseded by IEEE Std C57.21-1990
StatusInactive  -  Superseded

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This standard applies to all oil-immersed or dry-type, single-phase or three-phase outdoor or indoor shunt reactors rated 501 kVA and larger. It covers general requirements, terminology, ratings, insulation classes, dielectric tests, losses, impedance, temperature rise, construction, accessories and the test code.<>