GB/T 4473-2018Synthetic testing of high-voltage alternating current circuit-breakers (English PDF)

National Standard of the People's Republic of China

ICS

29.120.40

Classification

K 43

Replacing

GB/T 4473-2008

Issued by: State Administration for Market Regulation, China National Standardization Administration

Contents

• Foreword
• 1 Scope
• 2 Normative references
• 3 Terms and Definitions
• 4 Synthetic test techniques and methods for short-circuit breaking tests
• 4.1 Basic principles and general requirements for synthetic breaking test methods
• 4.2 Synthetic test circuit for breaking test and related specific requirements
• 4.3 Three-phase synthesis test method
• 5 Test techniques and methods for short circuit closure test
• 5.1 Basic principles and general requirements for synthetic closure test methods
• 5.2 Synthetic test circuits for closure tests and related special requirements
• 6 type test
• 6.1 Overview
• 6.106 Basic short circuit test mode
• 6.108 Single phase and out of phase ground fault test
• 6.109 Near-zone fault test
• 6.110 Out of step closure and breaking test
• 6.111 Capacitive current opening and closing test
• Appendix A (informative) Current distortion
• Appendix B (informative) Current introduction method
• Appendix C (informative) Voltage introduction method
• Appendix D (informative) Transformer circuit or Skeats circuit
• Appendix E (Normative Appendix) Information and records provided for the synthesis test
• Appendix F (informative) Test procedure Specific procedures for opening resistor circuit breakers
• Appendix G (informative) Synthetic method for capacitive current opening and closing test
• Appendix H (informative) Step by step arc method
• Appendix I (Normative) Correction of TRV and di/dt in test mode T100a
• Appendix J (informative) Three-phase synthetic test circuit
• Appendix K (normative appendix) Tolerance of test parameters in type test
• Appendix L (informative) Example of test circuit for metal-enclosed and floor-mounted tank circuit breakers
• Appendix M (informative) Combination of current introduction and voltage introduction methods