IEEE C57.116 1989

$90.46

IEEE Guide for Transformers Directly Connected to Generators

Published By	Publication Date	Number of Pages
IEEE	1989	31

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Description

New IEEE Standard – Active. 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.

PDF Catalog

PDF Pages	PDF Title
1	Title Page
3	Introduction Participants
6	CONTENTS
7	1. Scope and References 1.1 Scope 1.2 References
8	2. Definitions 3. Introduction
10	4. Transformer Connections 4.1 Unit Transformer Connections 4.2 Unit Auxilliaries Transformer Connections 4.3 Unit Transformer and Unit Auxilliaries Transformer External Connections
11	5. Selection of Parameters of Unit Transformer 5.1 Generator Bus Electrical Characteristics
13	5.2 Transmission System Electrical Characteristics 5.3 Evaluation of Parameters
21	5.4 Summary of Parameter Selection
22	5.5 Spare, Leased, or Alternative Unit Transformer
24	6. Selection of Parameters of Unit Auxiliaries Transformer 6.1 Voltage Rating and Tap Range 6.2 Impedance 6.3 Megavoltampere Rating
25	6.4 Phase Relationship 7. Transformer Overcurrent Considerations 7.1 Unit Transformer Faults 7.2 Unit Auxilliaries Transformer Faults
27	7.3 Fast Load Transfer-Mechanical Considerations
30	8. Load-Tap Changing Considerations 8.1 Load-Tap Changing Equipment 8.2 Duty Considerations
31	8.3 Specifications 9. Overheating of Isolated Phase-Bus Duct Connections