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IEEE C57.116-1989

Historical Revision

IEEE Guide for Transformers Directly Connected to Generators

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New IEEE Standard - Superseded.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.
This guide describes selection and application considerations for the unit transformer and unit auxiliaries transformer. Consideration is given to connections that include direct connection and connections through generator breakers and load break switches. The considerations referred to in this guide apply to hydroelectric and thermal electric generating stations. Various transformer connections and possible operating problems under normal and abnormal conditions are treated. Phasing procedures, basic impulse insulation level selection, and loading practices are not covered.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.116
Publication Date Sept. 29, 1989
Language en - English
Page Count 125
Revision Level
Supercedes
Committee Transformers
Publish Date Document Id Type View
Feb. 10, 2023 C57.116-2022 Revision
May 19, 2014 C57.116-2014 Revision
Sept. 29, 1989 C57.116-1989 Revision