GB/T 1984-2024 English PDFUS$3989.00 · In stock
Delivery: <= 18 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 1984-2024: High-voltage alternating-current circuit-breakers Status: Valid GB/T 1984: Historical versions
Basic dataStandard ID: GB/T 1984-2024 (GB/T1984-2024)Description (Translated English): High-voltage alternating-current circuit-breakers Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K43 Classification of International Standard: 29.130.10 Word Count Estimation: 230,247 Date of Issue: 2024-09-29 Date of Implementation: 2025-04-01 Older Standard (superseded by this standard): GB/T 1984-2014 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 1984-2024: High-voltage alternating-current circuit-breakers---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.ICS 29.130.10 CCSK43 National Standard of the People's Republic of China Replace GB/T 1984-2014 High voltage AC circuit breaker Released on 2024-09-29 2025-04-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface Ⅺ 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 3.1 General Terms and Definitions 2 3.2 Final Assembly 5 3.3 Assembly components 5 3.4 Switchgear 6 3.5 Components of a circuit breaker 7 3.6 Operational characteristics 10 3.7 Characteristic parameters 12 3.8 Fault Type 23 4 Normal and special conditions of use24 5 Rating 24 5.1 Overview 24 5.2 Rated voltage (Ur) 24 5.3 Rated insulation level (Ud, Up and Us) 24 5.4 Rated frequency (fr) 24 5.5 Rated continuous current (Ir) 25 5.6 Rated short-time withstand current (Ik) 25 5.7 Rated peak withstand current (Ip) 25 5.8 Rated short circuit duration (tk) 25 5.9 Rated supply voltage of auxiliary and control circuits (Ua) 25 5.10 Rated frequency of auxiliary and control circuit supply voltage 25 5.11 Rated pressure of compressed gas source for controlled pressure system 25 5.12 Rated filling pressure/level for insulation and/or switching 25 5.101 Rated short-circuit breaking current (Isc) 25 5.102 Rated first open pole coefficient (kpp) 27 5.103 Rated short-circuit making current 27 5.104 Rated operating sequence 27 5.105 Rated out-of-step closing and breaking current 28 5.106 Rated capacitive current 28 6 Design and structure 30 6.1 Requirements for liquid in circuit breakers 30 6.2 Requirements for gas in circuit breakers 30 6.3 Grounding of circuit breakers 30 6.4 Auxiliary and control equipment and circuits 30 6.5 Power Operation 31 6.6 Energy storage operation 31 6.7 Operation independent of non-locking (operation independent of manpower or power) 31 6.8 Human-operated actuators 31 6.9 Operation of the trip unit 31 6.10 Pressure/Liquid Level Indicator 32 6.11 Nameplate 32 6.12 Interlocking device 33 6.13 Position indication 33 6.14 Degree of protection of enclosure 34 6.15 Creepage distance of outdoor insulators 34 6.16 Gas and vacuum sealing 34 6.17 Liquid sealing 34 6.18 Fire (flammability) 34 6.19 Electromagnetic Compatibility (EMC) 34 6.20 X-ray emission 34 6.21 Corrosion 34 6.22 Insulation and/or switching, operating filling pressure/level 34 6.101 Requirements for inter-pole synchronization during single-close and single-break operations 34 6.102 General requirements for operation 35 6.103 Pressure limits of operating fluids 35 6.104 Exhaust hole 35 6.105 Time parameter 35 6.106 Mechanical load 36 6.107 Classification of circuit breakers 36 7 Type test 38 7.1 General Principles38 7.2 Insulation test 40 7.3 Radio Interference Voltage Test (RIV) 44 7.4 Measurement of loop resistance 44 7.5 Continuous current test 45 7.6 Short-time withstand current and peak withstand current test 45 7.7 Protection level verification 46 7.8 Sealing test 46 7.9 Electromagnetic compatibility test (EMC) 46 7.10 Additional tests on auxiliary and control circuits 46 7.11 X-ray test of vacuum interrupter 47 7.101 Mechanical and environmental tests 47 7.102 Provisions for closing and opening tests 56 7.103 General principles for making and breaking tests 71 7.104 Explanation of arcing time 76 7.105 Short-circuit test parameters 93 7.106 Short circuit test procedure 106 7.107 Terminal fault test 107 7.108 Additional short-circuit test 110 7.109 Near-field fault test 113 7.110 Out-of-step closing and opening tests 122 7.111 Capacitive current test 123 7.112 Requirements for closing and opening tests of E2 class circuit breakers with rated voltage up to and including 40.5 kV 136 7.113 Noise level test 137 8 Factory Test 137 8.1 General Principles137 8.2 Insulation test of main circuit 137 8.3 Testing of auxiliary and control circuits 138 8.4 Measurement of main circuit resistance 138 8.5 Sealing test 138 8.6 Design inspection and appearance inspection 138 8.101 Mechanical operation test 138 9 Guidelines for selection of circuit breakers 139 9.101 General 140 9.102 Selection of rated values under operating conditions 141 9.103 Selection of ratings under fault conditions 142 9.104 Selection of electrical life 145 9.105 Selection of capacitive load switching 145 10 Documents to be provided with enquiries, tenders and orders 145 10.1 General 145 10.2 Information provided with enquiries and orders 145 10.3 Information provided with the tender documents 146 11 Rules for transportation, storage, installation, operation and maintenance 148 11.1 General 148 11.2 Conditions during transportation, storage and installation 148 11.3 Installation 149 11.4 Operation 153 11.5 Maintenance 153 11.101 Resistors and Capacitors 154 12 Safety 154 13 Impact of products on the environment154 Appendix A (Normative) Tolerances of test parameters during the test 155 Appendix B (Normative) Type test records and reports 163 B.1 Data and results to be recorded 163 B.2 Contents of type test report 163 Appendix C (Normative) Use of mechanical properties and related requirements 166 Appendix D (Normative) Requirements for closing and opening test procedures for metal-enclosed circuit breakers and dead-shell circuit breakers 167 D.1 General 167 D.2 Reduced number of closing and breaking units for testing 167 D.3 Test of single pole in one enclosure 167 D.4 Test of three poles in one enclosure 170 Appendix E (Normative) Requirements for circuit breakers with disconnecting resistors 172 E.1 General 172 E.2 Opening and closing performance verification 172 E.3 Resistor connection time 182 E.4 Current carrying performance 182 E.5 Insulation performance 182 E.6 Mechanical properties 182 E.7 Requirements for the technical specifications of disconnecting resistors 183 E.8 Example of recovery voltage waveform 183 Appendix F (Normative) Method for determining expected TRV 187 F.1 General 187 F.2 Drawing the envelope 187 F.3 Determination of parameters 188 Appendix G (Normative) Methods for determining expected TRV waveforms 191 G.1 General 191 G.2 Brief description of recommended methods 192 G.3 Details of the recommended approach 192 G.4 Comparison of various methods.201 Appendix H (Informative) Requirements for circuit breakers to interrupt transformer limited faults 203 H.1 Overview 203 H.2 Circuit breakers with rated voltage less than 126 kV 204 H.3 Circuit breakers with rated voltage greater than or equal to 126 kV and less than or equal to 800 kV 205 H.4 Circuit breakers with rated voltage greater than 800 kV 205 Appendix I (Normative) Calculation of transient recovery voltage for near-field faults based on rated characteristics 207 I.1 Basic Methods 207 I.2 Line-side transient voltage 209 I.3 Transient voltage on power supply side 209 I.4 Calculation Example 212 Appendix J (Normative) Verification of capacitive current interruption in the presence of a single-phase or two-phase ground fault 215 J.1 General Principles 215 J.2 Test voltage 215 J.3 Test current 215 J.4 Test method 215 J.5 Criteria for passing the test 215 References 217 Figure 1 Typical waveform of a three-phase short-circuit closing-breaking cycle 13 Figure 2 Opening and closing operation of a circuit breaker without opening and closing resistors 14 Figure 3 Closing-opening cycle of a circuit breaker without closing and opening resistors 15 Figure 4 Reclosing of a circuit breaker without a closing and opening resistor (automatic reclosing) 15 Figure 5 Opening and closing operation of circuit breaker with opening and closing resistors 16 Figure 6 Closing-opening cycle of a circuit breaker with opening and closing resistors 17 Figure 7 Reclosing of circuit breaker with opening and closing resistor (automatic reclosing) 18 Figure 8 Determination of short-circuit closing and breaking current and DC component percentage 26 Figure 9 Relationship between the percentage of the DC component and the time interval from the start of the short circuit for different DC time constants 27 Figure 10 Wind speed measurement example 52 Figure 11 Low temperature test sequence 53 Figure 12 High temperature test sequence 55 Figure 13 Humidity test 56 Figure 14 Example of reference mechanical stroke characteristic curve (ideal curve) 59 Figure 15 The reference mechanical stroke characteristic curve in Figure 14 and its envelope centered on the reference curve (5%, -5%) 60 Figure 16 The reference mechanical stroke characteristic curve in Figure 14 and its envelope (10%, 0%) completely shifted upward based on the reference curve 60 Figure 17 The reference mechanical stroke characteristic curve in Figure 14 and its envelope (0%, -10%) completely shifted downward based on the reference curve 61 Figure 18 Equivalent test device for unit testing of circuit breakers having more than one independent making and breaking unit 62 Figure 19 Grounding of the test circuit for single-phase short-circuit test with kpp=1.5 63 Figure 20 Grounding of the test circuit for kpp=1.3, single-phase short-circuit test 64 Figure 21 Test circuit 64 for single-phase out-of-step test Figure 22 Test circuit for out-of-step test using two voltages with a phase difference of 120°65 Figure 23 Test circuit for out-of-step test when one end of the circuit breaker is grounded (with the consent of the manufacturer) Figure 24 Example of expected TRV in a test represented by a four-parameter envelope that meets type test conditions. 66 TRV Regulations Figure 25 Example of expected TRV in a test represented by a two-parameter envelope that meets type test conditions. 66 TRV Regulations Figure 26 Example of expected TRV waveforms and their combined envelopes for two tests67 Figure 27 Grounding of the test circuit for a three-phase short-circuit test with kpp=1.5 72 Figure 28 Grounding of the test circuit for a three-phase short-circuit test with kpp=1.3 73 Figure 29 Determination of power frequency recovery voltage 75 Figure 30 Legend of time parameters in the description of arcing time for test method T100a three-phase test 77 Figure 31 Example of three effective symmetrical breaking operations during three-phase test with kpp=1.579 Figure 32 Example of three effective symmetrical breaking operations during three-phase test with kpp=1.380 Figure 33 Example of three effective asymmetrical breaking operations during three-phase test with kpp=1.583 Figure 34 Example of three effective asymmetrical breaking operations during three-phase test with kpp=1.384 Figure 35 Example of three effective symmetrical breaking operations when kpp=1.5, single-phase test instead of three-phase condition 87 Figure 36 Example of three effective symmetrical breaking operations when kpp=1.3, single-phase test instead of three-phase condition 88 Figure 37 Example of three effective asymmetrical breaking operations when kpp=1.5, single-phase test instead of three-phase condition 90 Figure 38 Example of three effective asymmetrical breaking operations when kpp=1.3, single-phase test instead of three-phase condition 91 Figure 39 Graphical representation of the arcing window and the voltage coefficient kp that determines the TRV of each pole for a system with a kpp of 1.392 Figure 40 Graphical representation of the arcing window and the voltage coefficient kp that determines the TRV of each pole for a system with a kpp of 1.5 93 Figure 41 Representation of the specified TRV using four-parameter reference lines and delay lines 95 Figure 42 Representation of the specified TRV using two parameter reference lines and delay lines 96 Figure 43 Basic circuit for terminal fault with ITRV 96 Figure 44 Relationship between ITRV and TRV 97 Figure 45 Example of a nonlinear rise rate of transient voltage on a line with a time delay 104 Figure 46 Necessity and test requirements for additional single-phase tests 112 Figure 47 Basic circuit arrangement for the near-field fault test in accordance with 7.109.3 and type a) prospective TRV circuit. both on the power supply side and on the line side Delay 114 Figure 48 Basic circuit arrangement for the near-field fault test in accordance with 7.109.3 and b1) type prospective TRV circuit. There is an ITRV and a line There is a delay of 115 on the roadside Figure 49 Basic circuit arrangement for close-range fault test in accordance with 7.109.3 and b2) type prospective TRV circuit. time delay and line on the power supply side Roadside No Delay 116 Figure 50 Example of line-side transient recovery voltage with time delay 117 Figure 51 Flowchart for selecting the near-zone fault test circuit 119 Figure 52 Compensating for the long delay on the power supply side by increasing the amplitude of the line side voltage 120 Figure 53 Recovery voltage of capacitive current breaking test 133 Figure 54 Reclassification procedure for line and cable charging current tests 135 Figure 55 Reclassification procedure for capacitor bank current switching test 135 Figure D.1 Test arrangements considered in Tables D.1, D.2 and D.3 169 Figure E.1 Typical system structure for circuit breaker with disconnecting resistor 172 Figure E.2 Test circuit for test methods T60 and T100 173 Figure E.3 Test circuit for test methods T10, T30 and OP2 174 Figure E.4 Ur = 1100 kV, Isc = 50 kA, fr = 50 Hz, test mode 100 s (b), example of underdamped TRV 176 Figure E.5 Ur = 1100 kV, Isc = 50 kA, fr = 50 Hz, test method T10, example of overdamped TRV 177 Figure E.6 Example of test circuit for near-field fault test mode L90 178 Figure E.7 Example of real line simulation based on Ur = 1100 kV, Isc = 50 kA, fr = 50 Hz, near-field fault test mode L90 179 Figure E.8 Typical recovery voltage waveform of capacitive current interruption of circuit breaker with trip resistor 180 Figure E.9 T10 on resistor switch of circuit breaker with opening resistor (based on Ur = 1100 kV, Isc = 50 kA, fr = Typical recovery voltage waveform at 50Hz)181 Figure E.10 TRV waveform for large short-circuit current breaking operation 183 Figure E.11 Current under large short-circuit current breaking operation 184 Figure E.12 TRV waveform for small short-circuit current breaking operation 184 Figure E.13 Current 185 under small short-circuit current breaking operation Figure E.14 Voltage waveform of line charging current interruption operation 185 Figure E.15 Current waveform of line charging current interruption operation 186 Figure F.1 Expected TRV of a circuit expressed using four parameters --- F.2c) 1) Case 188 Figure F.2 Expected TRV of a circuit expressed using four parameters --- F.2c)2) 189 Figure F.3 Expected TRV of a circuit expressed using four parameters --- Case F.2c)3)i) 189 Figure F.4 Using two parameters to express the expected TRV of a loop - case F.2c)3)ii) 190 Figure G.1 Effect of suppression on TRV peak 191 Figure G.2 Interruption in the presence of arc voltage 193 Figure G.3 TRV for ideal breaking 193 Figure G.4 Breaking when current zero point is significantly advanced 193 Figure G.5 Relationship between the current values occurring in the test and the expected current values of the system and TRV 194 Figure G.6 Interruption with post-arc current 195 Figure G.7 Schematic diagram of power frequency current injection device 196 Figure G.8 Operation sequence of power frequency current injection device 197 Figure G.9 Schematic diagram of capacitor injection device 198 Figure G.10 Operation sequence of capacitor injection device.199 Figure H.1 First example of a transformer-limited fault (also called a transformer-fed fault) 203 Figure H.2 Second example of a transformer limited fault (also called a transformer secondary fault) 204 Figure I.1 Typical illustration of TRV parameters on the line side and the source side - both the line side and the source side have time delay 208 Figure I.2 Actual TRV curves for nearby faults L90, L75 and L60 on the power supply side 210 Figure I.3 Typical illustration of TRV parameters on the line side and the source side - both the line side and the source side have time delays, and the source side has ITRV 211 Table 1 Preferred values of rated capacitive current 29 Table 2 Nameplate information 32 Table 3 Examples of static horizontal and vertical forces for static terminal loading36 Table 4 Mechanical operation times 37 Table 5 Type test 38 Table 6 Ineffective test 40 Table 7 Partial discharge test voltage for GIS circuit breakers with rated voltage of 72.5 kV and above and circuit breakers with unpowered enclosure 42 Table 8 Test requirements for voltage tests as condition checks on metal enclosed circuit breakers 43 Table 9 Number of operation sequences 50 Table 10 Standard values of ITRV --- rated voltage 126 kV and above 76 Table 11 Parameters of the last current half-wave in three-phase test and single-phase test in place of three-phase condition related to short-circuit test mode T100a (operating frequency is 50Hz) 81 Table 12 Expected TRV parameters for single-phase test instead of three-phase test (verification of the interruption of the second interrupting pole with kpp=1.3) 85 Table 13 Expected TRV parameters for single-phase test instead of three-phase test (verification of the interruption of the third interrupting pole with kpp=1.3) 85 Table 14 Standard multipliers for the TRV values of the second and third disconnected poles 92 Table 15 Arcing window during symmetrical current test 92 Table 16 Expected TRV values for kpp=1.5, S1 class circuit breaker 98 Table 17 Expected TRV values for kpp=1.5, S2 class circuit breaker 99 Table 18 Expected TRV values for circuit breakers with kpp=1.3 and rated voltage 126 kV and above 101 Table 19 Expected TRV value of circuit breaker with kpp=1.5 and rated voltage 126kV 102 Table 20 Expected TRV value for out-of-step test of S1 class circuit breaker with kpp=2.5 105 Table 21 Expected TRV value for out-of-step test of S2 class circuit breaker with kpp=2.5 105 Table 22 Expected TRV value for out-of-step test of circuit breaker with kpp=2.5 and rated voltage 126kV 105 Table 23 Expected TRV values for out-of-step test of circuit breakers with kpp=2.0 and rated voltage 126 kV and above 106 Table 24 Expected TRV parameters for single-phase ground fault and out-of-phase ground fault tests 112 Table 25 Standard values of near-field fault line characteristics 114 Table 26 Standard value of expected TRV of the nearby fault power supply side circuit 121 Table 27 Test method for verifying out-of-step rating 123 Table 28 Specified values of u1, t1, uc and t2 125 Table 29 Common requirements for test methods 127 Table 30 Operation sequence for the electrical life test of E2 class circuit breaker for automatic reclosing mode 136 Table 31 Application of main circuit insulation test voltage 137 Table 32 Circuit breaker characteristics that should be provided 145 Table 33 Ratings and Characteristics 147 Table A.1 Tolerances of test parameters during type testing 156 Table D.1 Three-phase compatibility current interruption under operating conditions. power supply side voltage, load side voltage and recovery voltage 168 Table D.2 For laboratory single-phase test, according to the capacitive current interruption test of 7.111.7, the voltage values on the power supply side and the load side and the recovery Voltage 169 Table D.3 Capacitive current breaking under actual operating conditions. Maximum standard voltage value 171 Table E.1 Calculation results ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 1984-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 1984-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 13 ~ 18 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 1984-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 1984-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 1984-2024?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 1984-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
