1 Scope
This standard specifies the guide for choice of power transformer adopted by power plant and substation as well as the power plant and substation used transformer and distribution transformer.
This standard is applicable to the choice of transformer by the design department in designing the power plant and substation. The users may refer to technical parameters of transformer and content of the contract determined by this guide when they subscribe the transformers.
2 Normative References
The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated references, subsequent amendments (excluding correcting errors in the text) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest editions of the normative documents referred to apply.
Contents
Foreword I
1 Scope
2 Normative References
3 Service Conditions
4 General Principles for Transformer Choice
5 Technical Requirements
6 Parallel Operation of Transformer in Three-phase System
7 Sound Level of Transformer
8 Thermal Aging Rate and Service Life of Transformer
10 Marking, Lifting, Installing, Transport and Storage
11 Technical Documents and Figures the Manufacturer Shall Provide
12 Technical Agreement
Appendix A (Informative) Commonly-used Connection for Three-phase Transformers
Appendix B (Informative) Relationship between the Main Performance Parameters and the Manufacturing Cost of Transformer
Appendix C (Informative) Connecting Method for the Parallel Operation of Transformer
Appendix D (Informative) The Guide for Choosing Bushing Current Inductors
Appendix E (Informative) Contents in the Technical Agreement
