JB/T 9694-1999 General technical requirements for sulfur hexafluoride circuit breakers
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T9694
1999-08-06
Wa Xian Ji Dong
2000-01-01
JB/T96941999
This standard is a revision of ZB K43 001--88 "General Technical Conditions for High-voltage Hexafluoride Comb Circuit Breakers". The compilation and expression rules of this standard are in accordance with the provisions of GB/T1.11993. Its technical content is consistent with ZBK4300188. The difference is that the rated voltage adopts the value in GB156; the "basic classification" in the previous version is removed, the concept of "rated short-circuit breaking current breaking times" is added and listed as a type test item, and the corresponding electrical life value is also given; "minimum functional strength" replaces "closing pressure"; the requirement of "zero gauge pressure power frequency withstand voltage" is removed in the insulation test, and the second paragraph of Article 5.11 in the previous version of the standard is removed. The purpose is to make this standard as close to the current standard as possible through this modification, so that the applicability of this standard is enhanced and it is coordinated with relevant standards; in view of GB1984 being a mandatory standard, the type test items of this standard have been adjusted as necessary according to GB1984. This standard replaces ZBK43001-88 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of High Voltage Switchgear. This standard was drafted by Pingdingshan High Voltage Switch Factory and revised by Xi'an Commercial Voltage Electric Appliance Research Institute. Drafters of this standard: Tian Enwen, Che Peng. This standard is entrusted to the National Technical Committee for Standardization of High Voltage Switchgear for interpretation. This standard was first issued in 1988 and revised for the first time in 1999. I
1Fanshan
Jijiakuiluwayidao
JB/T96941999
ZBK4300188
This standard specifies the use conditions, rated parameters, design and structure, type test and factory test, packaging, transportation and storage requirements of indoor and outdoor AC high-voltage sulfur hexafluoride circuit breakers with rated voltage of 3.6~550kV and frequency of 50112 (hereinafter referred to as sulfur hexafluoride circuit breakers).
This standard applies to sulfur hexafluoride circuit breakers with a rated voltage of 3.6~550kV and a rated frequency of 50Fz, as well as their operating mechanisms and auxiliary equipment.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When the standard is published, the versions shown are valid. All standards will be subscribed, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB156—1993
CB 311. 1-1997
GB/T 763—1990
GB 1984—1989
GB/T 2706—1989
GB/T 2900. 1—1992
Standard voltage
Insulation coordination of high-voltage power transmission and transformation equipment
Heating of AC high-voltage electrical appliances during long-term operationAC high-voltage circuit breakers
Test method for dynamic thermal stability of AC high-voltage electrical appliancesElectrical terminologyBasic terms
Electrical terminologyHigh voltage test technology and perfect coordinationGB/T 2900. 19—1994
Electrical terminologyHigh voltage switchgear
GB/T 2900. 20—1994
GB/T 3309 — 1989 | | tt | 9
GB/T 11023—1989
GB/T11604—1989
Mechanical tests of high-voltage switchgear at room temperature. Near-field fault tests of AC high-voltage circuit breakers. High-voltage fault measurement
72.5kV and above gas-insulated metal-enclosed switchgear. Opening and closing capacitor bank tests of AC high-voltage circuit breakers. Gas management and detection in sulfur hexafluoride electrical equipment. General technical case for high-voltage switchgear
Sulfur hexafluoride gas sealing test for high-voltage switchgear. Radio interference test methods for high-voltage electrical equipment. High voltage test technology. Part 1. General test requirements. GE/T 16927. 1—1997
JB 5871—1991
3 Environmental conditions for use
The line charging current opening and closing test of AC high-voltage circuit breakers shall be as defined in Chapter 3 of GB/T11022—1989. 4 Definitions
1999-08-06
2000-01-01 Small cable
JB/T96941999
The definitions adopted in this standard shall comply with GB/T2900.1, GB/T2900.19, GB/T2900.20, GB1984 and GB7674. In addition, the following supplements are made:
4.1 Insulated shell type (sulfur hexafluoride circuit breaker) A sulfur hexafluoride circuit breaker with organic or inorganic insulating materials as the arc extinguishing chamber shell and ground insulation, such as the commonly known porcelain sleeve pillar type and/or insulated simple type circuit breaker.
4.2 Metal shell type (hexafluoride current circuit breaker) A sulfur hexafluoride circuit breaker with metal as the shell and directly grounded, such as the commonly known type and/or enclosed type circuit breaker. 4.3 Rated short-circuit breaking and interrupting times
The number of times the circuit breaker can interrupt the rated short-circuit breaking current without maintenance. 5 Rated value
5.1 Rated voltage
According to the provisions of GB 156.
5. 2 Rated insulation level
According to the provisions of GB311.1 and GB/T11022.
5.3 Rated frequency
5.4 Rated current
According to the provisions of GB1984.
5.5 Rated short-circuit breaking current
3.5.1 The root mean square value of the alternating component of the rated short-circuit monthly breaking current shall be in accordance with the provisions of GB 1984.
5.5.2 The percentage of the DC component of the rated short-circuit breaking current shall be in accordance with the provisions of GB 1984.
5.6 Expected transient recovery voltage
According to the provisions of GB1984,
5.7 Rated operating sequence
According to the provisions of GB1984
5. B Rated short-circuit making current
According to the provisions of GB1984.
5.9 Rated short-time withstand current
According to the provisions of GB 1984
5. 10 Rated peak withstand current
According to the provisions of GB 1984.
5.11 Rated short-circuit duration
According to the provisions of GB 1984.
5.12 Rated short-circuit breaking current breaking times
According to the provisions of GB 1984.
5.13 Mechanical life
According to the provisions of GB 1984,
5.14 Rated line charging breaking current
According to the provisions of GB 1984.
5.15 Rated cable charging breaking current
According to the provisions of GB 1984
$.16 Rated out-of-step breaking current
According to the provisions of GB 1984.
5.17 Rated time parameters
JB/T96941999
The following time parameters should be specified in the technical specifications of the product: one opening time and its lower and upper limits
one opening time,
one opening-closing time
one breaking time.
5.18 Rated pressure of sulfur hexafluoride gas for insulation and/or arc extinguishing The rated pressure of sulfur hexafluoride gas corresponds to the following values (at 20°C): 0.15, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70 MPa relative pressure value). In addition, the alarm pressure and the minimum functional pressure should also be clearly specified in the technical specifications and installation and operating instructions of the product. 5.19 Rated pressure of compressed air source for operation Unless otherwise specified by the manufacturer, the standard value of rated pressure is 0.5, 1.0, 1.6, 2.0, 2.5, 3.0, 4.0 MPa. The alarm pressure and minimum functional pressure (i.e. locking pressure) should also be clearly specified in the technical conditions and installation and operating instructions of the product: 6 Design and structure
6.1 General
Sulfur hexafluoride circuit breakers should be designed to safely carry out the following work, installation, and normal use, except 3.6-12kV pole-mounted circuit breakers can be inspected, maintained and replenished with sulfur hexafluoride gas during operation. 6.2 Requirements for the quality of sulfur hexafluoride gas
6.2.1 The quality of new sulfur hexafluoride gas shall comply with the provisions of GB/T8905. 6.2.2 After the circuit breaker is filled with sulfur hexafluoride gas for 24 hours, the water content of the gas shall not be greater than 150ppm (volume ratio). 6.2.3 The water content of sulfur hexafluoride gas in the circuit breaker in operation shall not be greater than 300ppm (volume ratio) 6.3 Strength requirements for the outer shell of the pressure-bearing circuit breaker 6.3.1 When the pressure-bearing outer shell is a casting, the breaking pressure shall not be less than 3.5 times the design pressure. 6.3.2 When the pressure-bearing shell is a welded part, the breaking pressure shall not be less than 2.3 times the design pressure. 6.3.3 The breaking pressure of other pressure-bearing parts shall be specified by the product technical conditions. Note: The shell that has been subjected to the destructive pressure test shall not be used. +6.4 Monitoring of sulfur hexafluoride gas pressure (density) In order to monitor the pressure (density) of sulfur hexafluoride gas, a pressure switch (or temperature relay) with a temperature compensation function should be installed. Pressure gauges can be used instead of 40.5kV and below indoor and outdoor circuit breakers, but the influence of temperature changes should be considered. 5 Sealing performance The sulfur hexafluoride circuit breaker should have good sealing performance, and the allowable annual leakage rate should not be greater than 1%. Note: The sulfur hexafluoride circuit breaker should be installed in an appropriate position. Provide suitable adsorbent to absorb gas decomposition products produced by arcing and moisture in the container.
6.7 Locking
6.7.1 When the pressure of the circuit breaker is (gas) powered or the pressure of sulfur hexafluoride gas drops to the minimum functional pressure, the circuit breaker should be locked or forced to separate
JB/T96941999
6.7.z Except for 3.6~～12kV pole-mounted circuit breakers, a signal should be issued when the pressure of sulfur hexafluoride gas drops to the alarm pressure. 6.8 Requirements for transport units
The transport unit of the circuit breaker should be designed as an assembled form that can be filled with low-pressure sulfur hexafluoride gas or high-purity nitrogen during transportation. 9 Operating mechanism
The operating mechanism should comply with the relevant provisions of GB19B4. 7 Type test
7.1 Test items
A Mandatory test items
a) Mechanical test!
b) Temperature rise test
c) Main circuit resistance measurement
d) Insulation test
e) Partial discharge measurement - only applicable to the components that must undergo this test; Dynamic thermal stability test: | |tt||name) Outgoing line short umbilical breaking and closing capacity test 1h) Near-zone fault breaking capacity test - only applicable to three-pole circuit breakers above 72.5kV, with rated short-circuit breaking current greater than 12.5kA and directly connected to overhead lines +
i) Line charging outflow opening and closing test - applicable to three-pole circuit breakers above 72.5kV and scheduled to open and close overhead line charging current
j) Rainproof test - applicable to outdoor products (except for inflatable units) k> Sealing test
1) Measurement of water content in sulfur octafluoride gas.
beat) Shell strength test (applicable to pressure-bearing shell) n) Electrical life test under rated short-circuit breaking current! o) Out-of-step breaking and closing test - only applicable to interconnecting circuit breakers; p) Cable charging current breaking and closing test - only applicable to circuit breakers with such performance requirements; q) Rated single capacitor bank and back-to-back capacitor bank current breaking and closing test - only applicable to circuit breakers with 3.6~2.5kV and such performance requirements; r) Small inductance current breaking and closing test - only applicable to circuit breakers with voltage reduction capability; s) Terminal static tensile test; u) Radio interference test - only applicable to circuit breakers with voltage of 126kV and above; u) Critical current breaking test - only applicable to circuit breakers with critical current reduction; v) Voltage test - only applicable to indoor circuit breakers with insulation affected by exposure to sunlight; w) Earthquake test + B) Test items carried out as agreed between the supplier and the buyer; x) Insulation test under pollution migration conditions; y) High and low condensation test
z) Verification of operation under severe icing conditions - only applicable to outdoor circuit breakers with external moving parts, aa) Parallel breaking test
bb) Short circuit breaking test under different phase grounding conditions. 7.2 Mechanical test
According to the provisions of GB 1984 and GB/3309.
JB/T96941999
The sulfur hexafluoride gas pressure value in the circuit breaker is set according to the provisions of the product technical specifications. 1.3 Temperature test
According to the provisions of GB/T 763, the sulfur hexafluoride gas pressure during the test should be the minimum functional pressure (pressure value at 20℃). The heating test of the liquid-free part of the operating mechanism is carried out according to the provisions of GB1984. 4 Main circuit electrical test
According to the provisions of GB/T 763.
7.5 Insulation test
The test conditions, test requirements and test procedures shall comply with the provisions of GB/T16927.1 and CB1984. The insulation test shall be carried out under the minimum functional pressure of the hexafluoride gas (pressure value at 20 ℃). The ambient air density and pressure value during the test shall be recorded in the test report.
7.6 Circumferential discharge measurement
According to the provisions of GB/T 7354,
7.7 Wireless dryness test
According to the provisions of GB/T11604.
7.8 Dynamic thermal stability test
According to the provisions of GB1984 and GB/T2706: The test can be carried out without filling with sulfur hexafluoride gas. 7.9 The breaking and closing capacity test of the line end shall be carried out according to the provisions of GB 1984. During the test, the sulfur hexafluoride gas pressure in the test product shall be the minimum functional pressure (pressure value at 20 ℃). 10 Interruption near-zone fault test
According to GB 1984 and GB/T 4474. Line charging current knife closing test
For circuit breakers with rated voltage of 72.5 kV and above, the provisions of JB 5871 shall apply. 7.12 Rainproof test
The rainproof test of outdoor circuit breakers and their operating mechanisms shall be in accordance with the provisions of GB/T11022. 7.13 Sealing test
During type test, the mechanical guide test shall be carried out before and after the case test. During factory test, the sealing test shall be carried out after the mechanical operation test. 7.13.1 Sealing test of operating mechanism
The sealing test of hydraulic mechanism and pneumatic mechanism shall be in accordance with the provisions of GB 1984. 7. 13.2 Sealing test of chlorinated gas chamber
Sealing test principle 1 can be carried out on the whole circuit breaker 1. If required, due to the limitation of test conditions, it can also be carried out on one pole or each sealing unit of circuit breakers of 126kV and above. The test result should be converted to the corresponding value of the integrated circuit breaker. The test method shall be in accordance with GB/T 11023.
7.14 Measurement of water content in sulfur hexafluoride gas
During the test, the sulfur hexafluoride gas pressure in the test sample shall be the rated pressure, and the quality of the new sulfur hexafluoride gas filled into the test sample shall meet the requirements of the relevant standards.
Before filling the sulfur hexafluoride gas, the test sample shall be vacuumed in accordance with the technical requirements. The water content of the sulfur hexafluoride gas in the test sample shall be detected 24 hours after filling, and the ambient air temperature and gas pressure of the measuring blade shall be recorded in the test report.
7.15 Shell strength test
The sulfur hexafluoride circuit breaker with metal shell shall be tested in accordance with the provisions of GB7674. The sulfur hexafluoride circuit breaker with insulating shell Circuit breaker shall be tested according to the product technical conditions.
7.16 Out-of-step breaking and closing test
JB/T96941999
According to the provisions of GB1984, the sulfur hexafluoride gas in the test product is the minimum functional pressure. 7.17 Charge charging current opening and closing test
According to the provisions of GB1984.
7.18 Opening and closing capacitor bank testwwW.bzxz.Net
For products with rated voltage of 3.6~72.5kV, it shall be carried out according to the provisions of GB/T7675. 7.19 Opening and closing small inductance current test
According to the provisions of GB1984
During the test, the sulfur hexafluoride gas pressure in the test product is the rated value. 7.20 Static tension test
According to the provisions of GB1984.
7.21 Electrical life test under rated short-circuit breaking current. According to the test conditions specified in GB1984, the SF6 circuit breaker should be able to break its rated short-circuit breaking current cumulatively without maintenance. The number of times should be selected from the following values: 8, 12, 16, 20 times. 7.22 Critical current breaking test
According to the provisions of GB 19B4.
7.23 Humidity certification
According to the provisions of GB1984,
7.24 High and low temperature test
According to the provisions of GB1984,
7.25 Verification test for operation under severe freezing conditions shall be in accordance with the provisions of GB1984.
7.26 Earthquake test
According to the provisions of GB/T11022.
7.27 Parallel breaking test
According to the provisions of GB1984.
7.28 Short-circuit breaking test under different-phase grounding conditions shall be in accordance with the provisions of GB1984
8 Factory test
Each hexafluorocarbon circuit breaker shall be subjected to factory test. The test shall generally be carried out on the entire circuit breaker. For the circuit breaker with split-pole operation, it can be carried out on one pole of the circuit breaker. The test items are as follows: a) Mechanical assembly and control circuit inspection
b) Mechanical characteristics and mechanical operation test *
c) Sealing test 1
d) Main circuit resistance measurement +
e) Auxiliary and control circuit power frequency withstand voltage test: E) Main circuit power frequency withstand voltage test;
C) Shell pressure test.
8.1 Mechanical assembly and control circuit inspection
Check the main assembly dimensions and control circuits specified in the product technical conditions to ensure the correct assembly and wiring of the product. 8.2 Mechanical characteristics and mechanical operation test
The test product should be filled with sulfur hexafluoride gas or high-purity nitrogen gas at rated pressure, but the mechanical characteristics when filled with nitrogen should be equivalent to the mechanical characteristics when filled with sulfur hexafluoride gas. The test date, requirements and methods shall comply with the provisions of GB1984 and GB/T3309. 6
B. 3 Sealing test
Perform according to 7.14 of this standard.
8. 4 Main circuit resistance measurement
Perform according to 7.6 of this standard
85 Power frequency withstand voltage test of auxiliary and control circuits shall be in accordance with the provisions of GB1984.
Main circuit power frequency withstand voltage test
JB/T96941999
The test sample is filled with sulfur hexafluoride gas at the minimum functional pressure, and the test voltage is in accordance with the specified value of GB1984 for 1min power frequency withstand voltage test. 8.7 External pressure test
The test pressure for tank-type and closed metal pressure-bearing shells shall be K times the design pressure. For welded shells, K is 1.3, and for static shells, K=Z0. For other pressure-bearing shells, it shall be carried out in accordance with the provisions of product technical conditions. 9 Marking, packaging, transportation and storage
9.1 Nameplate
Factory-made sulfur hexafluoride circuit breakers and their actuators shall have durable and legible nameplates. For outdoor products, the nameplates shall be weather-resistant and corrosion-resistant.
The contents of the nameplates shall comply with the provisions of GB1984. 9.2 Packaging, transportation and storage
9.2.1 Before packaging the sulfur hexafluoride circuit breaker, each sealed air chamber shall be filled with low-pressure dry gas (sulfur hexafluoride or nitrogen). Packaging shall be carried out in accordance with product packaging specifications. The recommended inflation pressure is 0.02-0.05MPa (relative pressure). 9.2.2 The packaging of the sulfur hexafluoride circuit breaker shall be firm so that the circuit breaker parts will not be damaged, deformed or affected by moisture during transportation. 9.2.3 Indoor circuit breakers shall be stored in a ventilated and dry room. The ambient temperature during storage should be within the product's operating temperature range, and the pressure of each sealed air chamber should not be less than 0.01 MP. 92.4 The packaging box should have obvious signs and symbols that must be noted during transportation and storage (such as upper position, moisture-proof, rain-proof, shock-proof, lifting position, quality, etc.),
9.2.5 Each circuit breaker shipped from the factory should be accompanied by a product certificate (including factory test data), packaging list and installation instructions. Parrot cheek
JB/T9694
Lai 880b1230
19XXXX Ridge
Cancer Snake Two
100044
Wan Duan X/X
Travel XXX,XXX
19XX Collection XX Cabin
Leng X Dai
De pxXX.XX Wing
Xian Ji Ou Hai
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.