JB/T 6463-1992 Technical requirements for circuit breakers for electrified railways
Some standard content:
Machinery Industry Standard of the People's Republic of China
JB6463-1992
Technical Conditions for Circuit Breakers for Electrified Railways
Issued on August 6, 1992
Ministry of Machinery and Electronics Industry
Implementation on January 1, 1993
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Circuit Breakers for Electrified Railways
Subject Content and Scope of Application
JB 6463-1992
This standard specifies the technical requirements, test methods and acceptance rules, marking, packaging, storage and transportation requirements for circuit breakers for electrified railways. This standard applies to indoor and outdoor vacuum and sulfur hexafluoride circuit breakers for users of electrified railway power supply systems with rated voltages of 27.5, 55/27.5, 55kV.
Cited standards
Insulation coordination of high-voltage power transmission and transformation equipment
GB311.2~311.6
High voltage test technology
GB1984
GB2706
GB2900.19
GB2900.20
GB3309
GB4473
GB5582
GB7674||tt| |GB7675
GB11022
GB11023
GB12022
GB/T12540
ZBK43001
ZBK43004
JB/DQ2080
3Terms
Heating of AC high-voltage electrical appliances during long-term operationAC high-voltage circuit breakers
Dynamic thermal stability test methods of AC high-voltage electrical appliancesBasic electrical terminology Terminology
High voltage test technology and insulation coordination
Electrical terms
Electrical terms
High voltage switchgear
Mechanical tests of high voltage switchgear at room temperatureSynthetic tests of AC high voltage circuit breakers
Pollution migration level of external insulation of high voltage power equipment
Sulfur hexafluoride enclosed combination electrical appliances
Opening and closing capacitor bank tests of AC high voltage circuit breakersGeneral technical conditions for high voltage switchgear
High voltage switchgear six Guide for sulfur fluoride gas sealing test Industrial sulfur hexafluoride
Seismic performance test of high-voltage switchgear
Vacuum interrupter for high-voltage vacuum switchgearGeneral technical conditions for high-voltage sulfur hexafluoride circuit breakersGeneral technical conditions for 35kV indoor high-voltage vacuum circuit breakersRainproof test method for high-voltage switchgear
In addition to the electrical terms specified in GB2900.1, GB2900.19, GB2900.20 and GB1984, this standard also adds the following terms.
Approved by the Ministry of Machinery and Electronics Industry on August 6, 1992 and implemented on January 1, 1993
Single-phase single-pole circuit breaker
JB6463-1992
In the direct power supply mode or BT power supply mode of electrified railways, the power supply circuit is single-phase, and the voltage between the circuit breaker breaks and to the ground is the single-phase voltage of the transformer. This circuit breaker is called a single-phase single-pole circuit breaker. 3.2
Single-phase double-pole circuit breaker
In the AT power supply mode of electrified railways, 1
The power supply circuit is single-phase, and the two lead wires of the transformer are respectively connected to the two poles of a circuit breaker. The voltage between the two poles of the output wire is the single-phase voltage supplied by the transformer. This circuit breaker is called a single-phase double-pole circuit breaker (see Appendix A for the schematic diagram of the power supply mode used for electrified railways).
Normal use conditions
Indoor and outdoor products shall comply with the provisions of GB11022 respectively, and supplement as follows: 4.1bzxZ.net
Outdoor product external insulation pollution migration level and creepage distance are divided into three levels, see Table 1. Table 1
Pollution migration level
In Table 1, creepage distance =
Creep distance
Highest voltage of equipment
Minimum creepage distance
The artificial pollution migration tolerance values of light pollution, medium pollution and heavy pollution shall comply with the II, I and IV levels in GB5582 respectively. The earthquake intensity shall not exceed 8 degrees.
Classification and main technical parameters
The basic classification of circuit breakers is shown in Table 2.
Classification
By feeder mode
By working environment
By arc extinguishing medium
By whether the capacitor bank can be opened and closed
By operation mode
Note: Direct manual closing is not allowed. See Table 3 for main technical parameters.
Basic type
Single-phase single-pole, single-phase bipolar
Indoor, outdoor
Vacuum, sulfur hexafluoride
Yes, no
Electromagnetic, spring, pneumatic, hydraulic
Rated insulation
Insulation level
Rated voltage
Maximum voltage
Lightning impulse withstand voltage (peak value)
1min power frequency withstand voltage
(effective value)
Rated frequency
Rated current
Rated short-circuit breaking current||tt ||Rated short-circuit making current (peak value)
Rated peak withstand current
3sRated short-time withstand current
Rated operation sequence
JB6463-1992
Between breaks
Relatively to ground
Between breaks
Relatively to ground
Rated short-circuit breaking current breaking times
Mechanical life
Vacuum circuit breaker
Sulfur hexafluoride circuit breaker
Rated voltage of closing and opening coils
The values in brackets are limited to the use of old products. Note: ①
is the time between opening and closing, and its value is 0.3s or 0.5s. Technical requirements
Mechanical characteristics and performance parameters are specified by product technical conditions and should include the following: a) Contact opening distance or stroke;
b) Contact overtravel or contact travel;
c) Contact opening and closing synchronicity (referring to single-phase two-pole); d) Opening speed;
e) Closing speed;
f) Contact closing bounce time (only for vacuum circuit breakers); g) Opening time;
h) Closing time;
i) Open-close time;
j) Close-open time;
6 30,
(1000), 12501600
8,10,12.5,16,20,25
20,25,31.5,40,50,63
20,25,31,5,40,50,63
8,10,12.5,16,20,2 5
—0—total
8, 12, 16, 20
4000,6000,10000
3000, 5000
DC 110,220:AC 220
k) Breaking time:
1) Circuit resistance per pole:
JB6463-1992
m) Rated pressure of insulating and arc-extinguishing gas (when used):n) Operating pressure of operating mechanism (when used):0) Cumulative thickness of allowable wear of moving and static contacts (only for vacuum circuit breakers). 6.2 The structural design of the circuit breaker and its operating mechanism shall comply with the relevant provisions of GB1984. 6.3 The static tensile force that the wiring terminals of outdoor circuit breakers should be able to withstand is shown in Table 4 (excluding wind pressure and ice load acting on the circuit breaker body). Table 4
Rated current
≤1250
Longitudinal horizontal tension
Horizontal horizontal tension
Upward and downward vertical force
6.4 Before and after the rated short-circuit breaking current test, the vacuum circuit breaker should be able to withstand the power frequency withstand voltage test for 1 minute and the impulse withstand voltage test for 15 times each for positive and negative polarities. The withstand voltage value is in accordance with Table 3. After breaking the rated short-circuit breaking current test, the impulse withstand voltage value between the breaks should not be less than 80% of the value specified in Table 3.
6.5 The components of the control, linkage, and signal circuits of the operating mechanism and the circuit itself should be able to withstand the power frequency test voltage of 2000V for 1 minute. Note: When the power frequency withstand voltage of the secondary circuit components is lower than 2000V, the corresponding standard provisions shall be implemented. 6.6 The inter-turn insulation of the DC coils for opening and closing the operating mechanism should be able to withstand a power frequency test voltage of 2.5 times the rated voltage for 1 minute, and the inter-turn insulation of the AC coils should be able to withstand a power frequency test voltage of 3.5 times the rated voltage for 1 minute. 6.7 An operation counter should be installed on the circuit breaker or operating mechanism (except for those with a counter on the complete set of equipment). 6.8 The heating requirements of the circuit breaker during long-term operation shall comply with the provisions of GB763, and the heating requirements of the current-carrying components and additional equipment inside the operating mechanism shall comply with the provisions of GB11022.
6.9 The main circuit resistance measurement shall be carried out in accordance with the relevant provisions of GB1984. 6.10 After the mechanical life test, the vacuum interrupter shall be subjected to a 1-minute power frequency withstand voltage test between the breaks, and penetrating discharge is not allowed to occur during the test.
6.11 For vacuum circuit breakers filled with sulfur hexafluoride gas, the leakage rate of sulfur hexafluoride gas shall not exceed 3%; the annual leakage rate of sulfur hexafluoride gas in sulfur hexafluoride circuit breakers shall not exceed 1%.
6.12 For sulfur hexafluoride circuit breakers, the moisture content of sulfur hexafluoride gas in the gas chamber where the arc is generated shall not exceed 150PPM (volume ratio) when leaving the factory: the moisture content of sulfur hexafluoride gas in the remaining gas chambers shall not exceed 500PPM (volume ratio) when leaving the factory. 6.13 The quality of sulfur hexafluoride gas shall comply with the provisions of GB12022. 6.14 Strength requirements for the pressure shell of the circuit breaker When the pressure shell is a casting, the breaking pressure shall not be less than 3.5 times the design pressure. When the pressure shell is a welded part, the breaking pressure shall not be less than 3 times the design pressure. The breaking pressure of other pressure shells shall be specified in the product technical conditions. 6.15 The strength requirements of pneumatic pressure vessels shall be specified in the product technical conditions. Test methods and acceptance rules
7.1 Type test
7.1.1 Type test items
a) Mechanical test:
b) Main circuit resistance measurement:
c) Temperature rise test:
d) Sealing test:
e) Insulation test:
f) Short-time withstand current and peak withstand current test;9) Short-circuit breaking and closing capacity test;
h) Opening and closing capacitor bank test (if any);i) Measurement of water content of sulfur hexafluoride gas in circuit breaker;j) Casing strength test (if any);
k) Terminal static tensile test (only for outdoor products)I) Rainproof test (only for outdoor products);m) Earthquake test (as agreed between supply and demand parties). 7.1.2 Carry out type test in the following cases a) New products;
b) Products transferred to the factory for trial production;
JB64631992
c) Carry out corresponding type test when the arc extinguishing chamber or operating mechanism used by the circuit breaker is changed; d) Carry out corresponding type test when the design, process or key materials and key components (such as contact materials, bellows, etc.) of the product are changed;
e) Mass-produced products should be subjected to temperature rise, mechanical life test and 100% rated short-circuit breaking current breaking and closing test and vacuum degree test of vacuum arc extinguishing chamber every 8 to 10 years, and other items can also be sampled when necessary. 7.1.3 Test pieces for type test
7.1.3.1 When conducting mechanical test, it is allowed to use a new test piece for test; but the power frequency withstand voltage test and temperature rise test must be carried out before and after the test.
7.1.3.2 When conducting short-circuit breaking and closing capacity tests, short-time withstand current and peak withstand current tests, and insulation tests, a new test product is allowed to be used for the test (the insulation test of the vacuum circuit breaker should be carried out in accordance with Article 6.4 before and after the test). After completing all short-circuit tests, the no-load opening and closing operations should be normal, and the mechanical characteristics should not change significantly compared with those before the test. If there is any doubt, when conducting a heating test without maintenance, the allowable temperature rise value is the value specified in GB763 plus 10K. 7.1.3.3 When conducting the opening and closing capacitor bank test, a new test product is allowed to be used for the test. 7.1.4 Mechanical test
7.1.4.1 Mechanical characteristics test
According to the content of Article 6.1 of this standard and shall comply with the requirements of product standards and product technical conditions, and its test method shall be in accordance with the provisions of GB3309. 7.1.4.2 Mechanical operation test
Carry out in accordance with the provisions of GB3309 and product standards and product technical conditions. 5
7.1.4.3 Mechanical life test
JB 6463-1992
The total number of mechanical life tests, number of cycles and number of operations under various conditions shall be in accordance with Table 5. The test method shall be in accordance with GB3309. For vacuum circuit breakers, after the total number of operations is completed, the break shall be subjected to a 1-min power frequency withstand voltage test in accordance with the requirements of Article 6.10. Table 5
Operation test items
Total number of opening and closing operations
Opening and closing in each test cycle
Number of test cycles
Under the highest operating voltage (pressure)
“Close—,—Open—”
Under rated operating voltage (pressure)
“Close—Open—”
Under the lowest operating voltage (pressure)
“Close once open t\
Under rated operating voltage (pressure)
“Open once a day, open once a day”
Sulfur hexafluoride
Note: ①t, for two The time interval between operations is specified by the product technical conditions. ② The number of operations of serial numbers 4, 5, 6, and 7 is the specific composition of serial number 2. 5 Main circuit resistance measurement
Perform in accordance with GB1984.
Temperature rise test
Number of operations
The circuit breaker temperature rise test method shall be in accordance with GB763. Special requirements shall be negotiated between the user and the manufacturer. The temperature rise test of the current-carrying components and additional equipment inside the 6000
operating mechanism shall be carried out in accordance with Article 7.3.2 of GB11022. 7.1.6.2
7.1.7 Sealing test||t t||During the type test, a sealing test shall be carried out before and after the mechanical life test. During the factory test, a sealing test shall be carried out after the mechanical operation test. The sealing test method shall be carried out in accordance with the provisions of Appendix E of GB1984 and GB11023. 7.1.8 Insulation test
The power frequency withstand voltage test and lightning impulse withstand voltage test methods shall be in accordance with the provisions of GB311, and the withstand voltage value shall be in accordance with the provisions of Table 3 10000
After passing the rated short-circuit breaking current breaking number test, the vacuum circuit breaker shall be subject to a verification inspection according to the requirements of Article 6.4. 7.1.8.3 The withstand voltage test of the sulfur hexafluoride circuit breaker shall be carried out in sulfur hexafluoride gas It is carried out under locking pressure (20℃ gauge pressure value), and the temperature and pressure values during the test should be stated in the test report. 7.1.8.4 The withstand voltage test of the circuit breaker filled with sulfur hexafluoride gas at zero gauge pressure should withstand 1.1 times the maximum voltage for 5 minutes in the open and closed states respectively.
7.1.8.5 The withstand voltage test of the auxiliary circuit and the control circuit shall be carried out in accordance with GB11022. 7.1.9
Short-time withstand current and peak withstand current test 6
It is carried out in accordance with GB2706.
Short-circuit breaking and closing capacity test
JB 64631992
The test mode and test parameters of the short-circuit breaking capacity test shall be carried out in accordance with the serial numbers 1 to 4 of Table 6 and Table 7, and the test method shall be carried out in accordance with the provisions of GB1984 and GB4473.
The number of unmaintained breaking times under the rated short-circuit breaking current shall be in accordance with the serial numbers 4 to 7 of Table 7. Table 6
Rated voltage
Maximum voltage
Breaking current
Percentage
10, 30
10, 30
Note: 55/27.5kV circuit breakers are tested according to the parameters of 27.5kV. In Table 6: u reference voltage (TRV peak value)
u=k×2Um
t3—reach u. Time
Test mode 1, 2
ta-time delay
u-reference voltage
Test mode 4
t'-time to reach u'
k. —Amplitude coefficient
f. —Equivalent frequency
Short-circuit breaking current percentage
tg=0.2 t3
to=0.15 t3
u. /t3
k,=1.4, f. =0.67×
k.=1.5,
f. =0.75×
Test sequence
Open-close open-180s-close open
Open-close open-180s-close open
Open-close open-180s-close open
Open-close open-180s-close open
Open-0-close open-180s-close open
Rated short-circuit breaking current cumulative breaking times Note:
kV/μs
Test times
In the short-circuit breaking test, as long as the short-circuit current is successfully broken within the breaking time specified in the product standard, the cumulative short-circuit breaking current value is provided for user reference. 6/7
Apartment parameters
The breaking is considered qualified.
JB6463-1992
③ In serial numbers 5 to 7, the numbers above the slash are for vacuum circuit breakers, and the numbers below the slash are for sulfur hexafluoride circuit breakers. 7.1.10.2 The short-circuit closing capacity test shall be carried out in accordance with the provisions of GB1984 and GB4473. 7.1.11 Opening and closing capacitor bank test
The test method shall be in accordance with the provisions of GB7675, and the parameters shall be in accordance with Table 8. 7.1.12 Measurement of water content in sulfur hexachloride gas When testing the micro-water content of sulfur hexafluoride gas, the sulfur hexafluoride gas in the circuit breaker should be filled to the rated pressure (gauge pressure value at 20°C). The detection instrument can be a dew point meter, and the test result should meet the requirements of 6.12. Table 8
Rated voltage
Maximum voltage
7.1.13 Shell strength test
Rated single capacitor bank and rated
Back-to-back capacitor bank breaking current
Rated capacitor bank closing surge current
≤1000
Maximum allowable overvoltage to ground
The shell strength test method shall be carried out in accordance with Article 5.8 of GB7674. The test pressure shall be in accordance with Article 6.14 of this standard. Terminal static tension test
Perform in accordance with Article 6.3 of GB1984 and this standard. 7.1.15 Rainproof test
Perform according to JB/DQ2080.
7.1.16 Earthquake test
Perform according to JB/T13540.
7.2 Factory test
Each circuit breaker must pass the inspection before it can leave the factory, and it must be accompanied by a product certificate of conformity. 7.2.1 Factory test items and inspection test methods a) Structural inspection, the product and all parts should comply with the product drawings and technical requirements: b) Mechanical operation test, carried out in accordance with GB1984 and GB3309: c) Mechanical property test, carried out in accordance with product standards and product technical conditions and GB3309; d) Auxiliary circuit and control circuit power frequency withstand voltage test, carried out in accordance with GB11022 and Articles 6.5 and 6.6 of this standard e) The main circuit power frequency withstand voltage test method shall be carried out in accordance with GB311, and the withstand voltage value shall comply with the provisions of Table 3 of this standard: f) The main circuit resistance measurement shall comply with the product standards and product technical conditions and the provisions of GB1984; standard value
g) Other factory test items specified in the product standard, the test requirements and methods shall be carried out in accordance with the provisions of the product standards and product technical conditions;
h) Leakage test and gas quality detection shall comply with the provisions of the product standards and product technical conditions and relevant standards (only for sulfur hexafluoride circuit breakers or vacuum circuit breakers filled with sulfur hexafluoride gas medium). 7.2.2 When the vacuum interrupter of the circuit breaker is used as the main spare part of the circuit breaker or as a product leaving the factory, it must be inspected and tested in accordance with the factory inspection and test items specified in the product standards and product technical conditions. o0
Marking, packaging, transportation and storage
JB6463-1992
Each circuit breaker should have a nameplate, which should include the following informationa) Manufacturer's name;
Circuit breaker model and name:
Rated voltage, kV:
Rated current, A:
e) Rated short-circuit breaking current, kA;
f) Rated short-circuit breaking current breaking times: Rated capacitor bank breaking current, A (if any):g
Rated operating sequence;
i) Rated gas pressure of sulfur hexafluoride gas, MPa (if any);j) Rated operating voltage (AC or DC V) or rated operating pressure, MPa;k) Total weight, kg;
I) Factory number:
m) Year and month of manufacturing.
The vacuum interrupter of the circuit breaker should be clearly marked with the manufacturer's name or trademark, product model, manufacturing year and month, and factory number. Product packaging should comply with the provisions of GB1984 and product packaging specifications. 4 The product should be packaged in a moisture-proof and shock-proof box, and the packaging box should be marked with obvious signs such as "glass fragile", "handle with care", "do not invert", "afraid of rain", and "afraid of moisture".
5 Each circuit breaker and vacuum interrupter shipped from the factory should be accompanied by a product certificate (including factory inspection data), a packing list, and an installation and use manual.
5 The product must not be inverted during transportation and loading and unloading, and should not be subjected to strong vibration and collision. 8.6
7 The product should be stored in a ventilated, dry room without corrosive gases. Before packaging, the sealed air chamber should be inflated in accordance with the provisions of Article 7.2.1 of ZBK438.7
001.
Direct power supply mode is shown in Figure A1
Traction substation
JB6463-1992
Appendix A
(reference)
Schematic diagram of power supply mode for electrified railways
Feeder line
Return line
Contact network
Circuit breaker
Electric locomotive
Electric locomotive 4 receives power from the contact network 3, and the current returns to the power supply through the rails. The bus voltage of the traction substation is 27.5kV, and the circuit breaker is a 27.5kV single-phase single-pole circuit breaker.
Current-absorbing transformer power supply mode (i.e. BT power supply mode) is shown in Figure A2. Figure A2
As shown in Figure A1
Current absorption transformer
Suction line
Circuit breaker
Electric locomotive 4 receives power from overhead line 3, and the current returns to the power supply through suction line 8 and return line 6. The bus voltage of traction substation is 27.5kV and the circuit breaker is 27.5kV single-phase single-pole circuit breaker. Autotransformer power supply mode (ie AT power supply mode) is shown in Figure A3. A34
Rain", "Afraid of moisture" and other obvious signs.
5 Each circuit breaker and each vacuum interrupter shipped from the factory should be accompanied by a product certificate (including factory inspection data), a packing list and an installation and operation manual.
5 The product must not be inverted during transportation and loading and unloading, and should not be subjected to strong vibration and collision.8.6
7 The product should be stored in a ventilated, dry room without corrosive gases. Before packaging the product, the inflation of the sealed air chamber should comply with the provisions of Article 7.2.1 of ZBK438.7
001.
Direct power supply method is shown in Figure A1
Traction substation
JB6463-1992
Appendix A
(reference)
Schematic diagram of power supply method for electrified railways
Feeder
Return line
Contact network
Circuit breaker
Electric locomotive
Electric locomotive 4 receives power from the contact network 3, and the current returns to the power supply through the rails. The bus voltage of the traction substation is 27.5kV, and the circuit breaker is a 27.5kV single-phase single-pole circuit breaker.
Suction transformer power supply method (i.e. BT power supply method), as shown in Figure A2. Figure A2
As shown in Figure A1
Suction transformer
Suction line
Circuit breaker
Electric locomotive 4 receives power from the contact network 3, and the current returns to the power supply through the suction line 8 and the return line 6. The bus voltage of the traction substation is 27.5kV, and the circuit breaker is a 27.5kV single-phase single-pole circuit breaker. Autotransformer power supply method (i.e. AT power supply method), as shown in Figure A3. A34
Rain", "Afraid of moisture" and other obvious signs.
5 Each circuit breaker and each vacuum interrupter shipped from the factory should be accompanied by a product certificate (including factory inspection data), a packing list and an installation and operation manual.
5 The product must not be inverted during transportation and loading and unloading, and should not be subjected to strong vibration and collision.8.6
7 The product should be stored in a ventilated, dry room without corrosive gases. Before packaging the product, the inflation of the sealed air chamber should comply with the provisions of Article 7.2.1 of ZBK438.7
001.
Direct power supply method is shown in Figure A1
Traction substation
JB6463-1992
Appendix A
(reference)
Schematic diagram of power supply method for electrified railways
Feeder
Return line
Contact network
Circuit breaker
Electric locomotive
Electric locomotive 4 receives power from the contact network 3, and the current returns to the power supply through the rails. The bus voltage of the traction substation is 27.5kV, and the circuit breaker is a 27.5kV single-phase single-pole circuit breaker.
Suction transformer power supply method (i.e. BT power supply method), as shown in Figure A2. Figure A2
As shown in Figure A1
Suction transformer
Suction line
Circuit breaker
Electric locomotive 4 receives power from the contact network 3, and the current returns to the power supply through the suction line 8 and the return line 6. The bus voltage of the traction substation is 27.5kV, and the circuit breaker is a 27.5kV single-phase single-pole circuit breaker. Autotransformer power supply method (i.e. AT power supply method), as shown in Figure A3. A3
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