IEEE C57.116-1989
- IEEE Guide for Transformers Directly Connected to Generators
- standard by IEEE, 09/29/1989
- Category: IEEE
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New IEEE Standard - Superseded.The selection, application, and specification considerations for the unit transformer and unit auxiliaries transformers are described, taking into account their connections, voltage and kilovoltampere ratings, and excitation and through-fault capabilities during possible operating conditions, both normal and abnormal. Consideration is given to direct connections and connections through generator breakers and load-break switches. Both hydroelectric and thermal electric generating stations are covered. Phasing procedures, basic impulse insulation-level selection, and loading practices are not covered.

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