JB/T 10323-2002 Connectors for main circuits of low-voltage withdrawable switchgear and control equipment
Some standard content:
ICS29.120.30
2002-07-16
JB/T103232002
2002-12-01
JB/T10323—2002
This standard is prepared in accordance with the national standard G7251.1-1997 "Low-voltage switchgear and controlgear Part 1: Type test and partial type test complete equipment" (idt1EC60439-1: 1992) and GB/T14048.1—2000' General rules for low-voltage switchgear and controlgear" (eqIEC60947-1: 1999) and with reference to the mechanical industry standard JB/T9661—1999 "Low-voltage withdrawable complete switchgear". Appendix A of this standard is a normative appendix.
This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the Technical Committee for Standardization of Complete Sets of Electric Drive Control Equipment. The responsible drafting unit of this standard: Tianjin Electric Drive Design Institute. Participating drafting units of this standard: National Quality Supervision and Inspection Center for Electric Control and Distribution Equipment, Sino-German Joint Venture Chengdu Weidmuller Electric Connection Co., Ltd., Wujin Xinyuan Electric Parts Factory, Shandong Province Shantou Lingyue Electric Manufacturing Co., Ltd., Nanjing Huayang Electric Control Equipment Co., Ltd., Wenzhou Haitan Magnetic Electric Factory, Wenzhou Xinqiao Machinery and Electric Factory, Changzhou Lanxiang Electric Equipment Factory. The main drafters of this standard: Ri Xiuzhen, Zhang Changfu, Pan Chenggou, Mo Yaohuan, Yao Weixiong, Xu Guocai, Liang Hengyun, Chen Senze, Zhu Weien, Yu Xiuwen.
1 Scope
Connectors for main circuits of low-voltage withdrawable complete switchgear and control equipment
JB/T10323—2002
This standard specifies the models and classifications of connectors for main circuits of low-voltage withdrawable complete switchgear and control equipment. Technical requirements, test methods, inspection rules and markings. Packaging, transportation and storage conditions: This standard applies to low-voltage withdrawable complete switchgear and control equipment with rated voltage AC 660V and below, frequency 50Hz (or 60Hz) or DC 440V and below. The circuit connectors (hereinafter referred to as connectors) 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For the documents marked with a number, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced documents, the latest version shall apply to this standard. GB/T2423.4-1993 Basic environmental test procedures for electric and electronic products Test Db: Alternating humidity test method (eq1 to 60068-2-30:1980)
GB/T2828--1987
Batch inspection counting sampling procedures and sampling tables (applicable to inspection cycle inspection of migration and continuation of batches) GB/T 2829—1987
GB/T4207--1984 Determination of comparative tracking index and proof tracking index of solid insulating materials under humid conditions (eqvIEC60112:1979)
GBT5095.2--1997 Basic test procedures and measurement methods for electromechanical components for electrical equipment: Part 2: Strand inspection, continuity and contact resistance test, insulation test and voltage stress test (idtIFC:60512-2:1994) GB/T5169.10--1997 Test methods for fire hazard tests of electrical products: Glow-wire test method-General (idtIFC60695-2-1/0:1994)
GB/T7251.1-1997 Low-voltage complete switchgear and control equipment Part 1: Type test and partial type test complete equipment (idt IEC 60439-1: 1992) GB/T14048.1-2000 General rules for low-voltage switchgear and controlgear (eqvIEC60947-1: 1999) JB/T9661-1999 Pressure-type complete switchgear JB/T9665--1999 Method for compiling auxiliary models of low-voltage complete switchgear and controlgear 3 Models and classifications
3.1 Models
The reduction of connector models shall comply with the provisions of 3.1 in JB/T9665-1999. 3.2 Classification
3.2.1 According to the structural form of the connector:
) Body type:
b) Single-pole split type:
c) Combined type:
3.2.2 According to the connection method of the connector wire (cable): a) Threaded type;
JB/T10323—2002
b) Non-threaded type,
3.2.3 According to the form of the connector conductive sheet:
a) Climbing sheet type:
b) Non-stacked sheet type.
4 Technical requirements
4.1 Rated parameters
Rated working voltage: AC 220V, 380V, 660V; DC 220V, 440V.
Rated working current: 40A, 63A, 80A, 100A, 125A, 160A, 200A: 250A, 315A, 400A: 630A.4.2 Environmental adaptability
4.2.1 Ambient air temperature
a) The upper limit of ambient air temperature is +40℃, and its average temperature shall not exceed +-35 within 24h. b) The lower limit of ambient air temperature is -5℃, Note: When the ambient air temperature exceeds +40℃, or is lower than -5℃, the user shall negotiate with the manufacturer. 4.2.2 Altitude
The altitude of the installation site shall not exceed 200xm:
Note: For installation sites exceeding 2000m, the cooling effect of the variable air and the decline in dielectric properties shall be taken into consideration, and the design and use shall be based on the agreement between the two parties. 4.2.3 Atmospheric pollution
4.2.3.1 Humidity
When the highest temperature is +40℃, the relative humidity of the air at the installation site shall not exceed 50%; at lower temperatures, higher relative humidity is allowed, and the average minimum temperature of the most condensing month shall not exceed +25℃, and the average maximum relative humidity of the month shall not exceed 90%. Measures must be taken for condensation on the product due to temperature changes. 4.2.3.2 Pollution level
Unless otherwise specified by the enterprise standard, the pollution level of the connector shall not be lower than level 3 of GB/T14048.1-20KIN. 4.2.4 Installation category (overvoltage category)
Unless otherwise specified by the enterprise standard, the installation category of the connector shall not be lower than category IⅢ of GB/T14048.1-2000. 4.3 Structural requirements
4.3.1 Appearance, dimensions
a) The recommended grid spacing for the overall dimensions and installation dimensions is 2.5mm (2.0mum), which shall comply with the requirements of the product drawings. b) The surface roughness of parts, the appearance quality of the coating and the insulating parts shall comply with the requirements of the drawings and design documents. The surface of metal parts shall not have marks of movement, burrs or corrosion. The surface of insulating parts shall not have defects such as cracks, impurities, flash, uneven color, etc. 4.3.2 Insulating parts
4.3.2.1 Insulating materials that are flame retardant (difficult to burn) or self-extinguishing and have sufficient mechanical strength shall be able to withstand the tests specified in 5.2.2 of this standard. 4.3.2.2 Insulating parts shall have sufficient heat resistance. Under normal working conditions, the highest temperature that may be reached shall not cause harmful damage to them. 4.3.2.3 After the aging test, the insulating parts shall be placed in an environment with room temperature and relative humidity of 45% to 55% for no less than 24 hours. The test products shall show no changes, that is, no surface cracking or shrinkage that affects continued use, and no material becomes sticky or oily. If the manufacturer uses a more stringent test method for verification, the test results can also be considered valid. 4.3.2.4 The sample tracking index (CTI) of the insulating material shall be less than or equal to 175. 4.3.3 Connectors
The electrical clearance and creepage distance values of connectors shall comply with the provisions of JB/T9661. 4.3.4 Terminals
4.3.4.1 The terminal structure of the connector shall comply with the provisions of 7.1.7.1 of GB/T14048.1-20002
JB/T 10323-2002
4.3.4.2 The terminal of the connector shall be suitable for connecting copper wires or cables with the maximum and minimum cross-sectional areas specified by the rated current. For specific specifications, see Appendix A (Normative Appendix). 4.3.4.3 The connection requirements of the terminal of the connector shall comply with the provisions of 7.1.7.3 of GB/T14048.1-2000. 4.3.4.4 For connectors with a neutral pole, when the conductor cross-sectional area of the neutral pole is not equal to that of the ground pole, the symbol "N" shall be marked at the place where the neutral pole is visible.
4.4 Performance requirements
4.4.1 Temperature rise
Under rated current operation, connect the specified external conductor (or busbar) for temperature rise test. The temperature rise of the terminal of the connector shall not exceed 50K, and the temperature rise of the contact part of the conductive part shall not exceed 55K. The specifications of the external conductor are specified in Tables 8 and 9 of GB7251.1-1997.
4.4.2 Dielectric properties
4.4.2.1 When the manufacturer specifies the impulse withstand voltage value, the connector shall be subject to the requirements of 7.2.3.1 of GBT14048.1-2000. And it shall meet the dielectric property test and verification specified in Item 2) of 8.3.3.4.1 of GB/T 14048.1-2000. 4.4.2.2 If the manufacturer specifies the rated impulse withstand voltage value, the test shall be carried out in accordance with 5.2.9.1 and 5.2.9.2 of this standard. The test results shall comply with the provisions of item d) of 3) of 8.3.3.4.1 of GB/T14048.1-2000. 4.4.3 Moisture and heat resistance
The connector shall be able to adapt to the humidity that may occur under normal working conditions (including condensation that may occur due to temperature changes).
Performed in accordance with GB/T2423.4: Moisture and heat resistance test conditions: Test Db: Alternating moisture and heat test (see GB/T2423.4) Test severity level: High temperature temperature 40℃: Cycle number is days After the test, perform the power frequency withstand voltage test in accordance with item 5) of 8.3.3.4.1 of GBT14048.1-2000. There shall be no insulation breakdown or flashover. 4.4.4 Short circuit withstand strength
Under consideration.
4.4.5 Insertion force and extraction force
Under consideration,
4.4.6 Mechanical life
The connector shall be able to withstand a life test of 500 no-load operations. After the test, the temperature rise of each part of the connector shall not exceed 10K before the test.
5 Test method
5.1 Test case
5.1.1 The sample to be tested must meet the requirements of the product drawings and technical documents. 5.1.2 When the ends of the wires used in the test product need to be prefabricated, the method used and the type of wire (hard wire or soft wire) shall be stated in the test report. 5.1.3 The connectors to be tested shall be new, clean and installed under normal use conditions: 5.1.4 Unless otherwise specified, the test shall be conducted at a temperature of +10℃～+40℃ and a relative humidity of 45%75%. 5.2 Performance test
5.2.1 Appearance, dimension inspection and coating quality inspection Appearance, dimension inspection and coating quality inspection: Conduct in accordance with 1a (self-view) and 1b of GB/T5095.2-1997, and the inspection results shall comply with the provisions of 4.3.1 of this standard.
5.2.2 Fire hazard performance test
Conducted in accordance with GB/T5169.10, the test temperature of the glow wire end is (960±15)℃, and the test time is (30±1)S. The test results shall comply with the provisions of GB/T5169.10
JB/T10323—2002
5.2.3 Heat resistance test
Parts made of insulating materials that support or fix current-carrying parts and grounding parts, unless otherwise specified, shall be subjected to a spherical pressure test at a temperature of (125±2)°C.
During the spherical pressure test, the plane of the test part is placed in the half-water position supported by a rigid plate, and the thickness of the steel plate is at least 5mm. The diameter of the steel ball is 5mm, and the force applied vertically on the surface of the test part by the ball is 20N. The spherical pressure test is carried out in a heated laboratory (box) at a temperature of (125+2)°C for 1h. After the test, remove the steel ball and immediately put the test piece into cold water. The cooling room should be close to room temperature within 10s, and then measure the diameter of the steel ball sunk into the test piece, which should not exceed 2mm.
When the complete component cannot be tested, take a suitable part with a thickness of at least 2mm to conduct the spherical HK force test at high temperature. For components with a thickness of less than 2mm, they can also be made of several layers. The test results shall comply with the provisions of 4.3.2.2 of this standard. 5.2.4 Aging resistance test
Elastic parts of electrical appliances made of rubber, polyvinyl chloride (PVC) or similar materials: for example, sealing rings, films and screw cover gaskets) shall be placed in a heating room for testing. The pressure and composition of the indoor air are the same as those of the surrounding air, and there is natural circulation ventilation. Unless otherwise specified in the relevant product standards, the temperature in the laboratory is (70±2)℃. The test sample shall be stored in the room for 10 days (2406h). The laboratory recommends the use of electric heating, and the natural circulation of air can be achieved by opening holes in the laboratory. The test results shall comply with the provisions of 4.3.2.3 of this standard. 5.2.5 The comparative tracking index (CTI) shall be determined in accordance with GB/T4207, and the test results shall meet the design requirements. 5.2.6 The measurement of electrical clearance and creepage distance shall be carried out in accordance with the provisions of Appendix F (Standard Appendix) of G7251.1-1997, and shall be measured with a vernier caliper: it shall comply with the provisions of 4.3.3 of this standard. 5.2.7 The mechanical strength test of the terminal block shall be carried out in accordance with 8.2.4.2 of GB/T14048.1-2000, and shall comply with the provisions of 4.3.4.1, 4.3.4.2, and 4.3.4.3 of this standard. 5.2.8 Temperature rise test
5.2.8.1 The temperature rise test can generally be carried out in the range of ambient air temperature of +10℃ to +40℃. At this time, the temperature rise data obtained shall not be corrected.
5.2.8.2 The connector to be tested shall be placed in the actual withdrawable functional unit and the corresponding installation box, such as a special test box, and normal ventilation is allowed.
5.2.8.3 The test is carried out with a three-phase AC (45Hz~62Hz) sinusoidal power supply. The voltage is not specified. The difference between the current of each phase and the average current of each phase is not greater than 5%.
Connectors with neutral poles should also be supplemented with a temperature rise test with a single-phase current passing through the neutral pole and its adjacent pole. The neutral pole and other poles have the same cross-section and are passed through the rated working current: the cross-sectional area of the neutral pole is selected as 1/2 of the cross-sectional area of other poles; 0.5 times the rated working current is passed, 5.2.8.4 Test wires:
5.2.8.4.1 The length of the connecting wire (including the vertical branch bus) between the connector and the power supply shall not be less than 2m. The cross-sectional area of the vertical branch bus shall be selected according to the provisions of Table 8 and Table 9 in GB7251.1-1997. 5.2.8.4.2 The connecting wire between the connector and the power supply shall have sufficient length and cross-sectional area: a) When the wire cross-sectional area S≤35mm, the length shall not be less than 1m. b) When the cross-sectional area of the conductor s>35mm, the length shall not be less than 2mm. The cross-sectional area of the connecting conductor (or busbar) shall be selected according to Table 8 and Table 9 of GB 7251.1-1997. d) For connectors with neutral poles, if there are no special provisions, the connecting conductor of the neutral pole shall be selected according to 1/2 of the cross-sectional area of other poles. 5.2.B.5 The test starts from the cold state and the rated working current is passed. The test continues until the stable temperature rise is reached. The temperature is measured continuously for 3 times, with an interval of 5 minutes each time. When the change in the temperature rise measured between any two times is less than 1K, it is considered that the stable temperature has been reached. At this time, the temperature rise value of the connector is measured, and the temperature of any part shall not exceed the limit value specified in 4.4.1 of this standard. 5.2.9 Dielectric property test
The test shall be carried out in accordance with the following provisions:
JB/T10323--2002
a) If the manufacturer specifies the impulse withstand voltage value, it shall be carried out in accordance with the relevant provisions of 8.3.3.4.1 2) in GB/T14048.1-2000, and the impulse withstand voltage value shall be as specified in Table 2.
b) If the manufacturer does not specify the rated impulse withstand voltage value, the test shall be carried out in accordance with the provisions of 5.2.9.1 and 5.2.9.2 of this standard. 5.2.9.1 Application of test voltage
The connector is installed on a metal bracket and connected to a wire with a rated cross-sectional area. Test voltage application position:
1) Between all the connected contacts and the metal bracket. b) Between adjacent contacts.
5.2.9.2 Test voltage value
The test power frequency is between 45Hz--62Hz. When the commercial voltage output terminal of the test power source is short-circuited, the current is not less than 10.5A. The test voltage should be applied for 1min. The test voltage gradually rises to the specified value and then lasts for 1min. During the test, the sudden connection and disconnection of the test power supply (transformer) should be avoided. Unless otherwise specified, the test voltage value should be as specified in Table 1, and the test results should comply with the provisions of 4.4.2 of this standard. Table 1 Power frequency withstand voltage test voltage value
Rated insulation voltage U
300
300- U≤690
690≤U800
Rated working voltage to ground maximum value
(AC root mean square value)
5.2.10 Moisture and heat resistance test
Dielectric test voltage (AC average value)
Table 2 Impulse withstand voltage test voltage value
Unit: V
Rated impulse withstand voltage priority value (1.2/50is) [at an altitude of 2000m] kV
Installation category (overvoltage category) I1
Perform according to Appendix K (Standard Appendix) in GB/T14048.1-2000: The test shall comply with the provisions of 4.4.3 of this standard. 5.2.11 Mechanical life test
The test can be carried out in a simulated withdrawable functional unit test device or on a complete cabinet of a complete set of switchgear. The test position to the connected position and then back to the test position is one cycle, and it shall be carried out continuously for 500 times, with an operating frequency of 5 times/min. The temperature value of each part measured after the test shall comply with the provisions of 4.4.6 of this standard.
6 Inspection rules
6.1 Inspection classification
The inspection of connectors is divided into type test, factory inspection and periodic inspection. 6.2 Type test
The purpose of type test is to verify whether the design and performance of connectors meet the requirements of the standard. Type test must be carried out in the following circumstances: a) When new products are trial-produced,
b) When the design performance and product quality are affected by changes in process, materials or structure. When the national quality supervision agency proposes a type test requirement. c
6.2.1 The type test can only be deemed qualified if all the samples are qualified in the sequential inspection. Only products that pass the type test can be identified.
JB/T 103232002
For type test groups, items and number of test specimens, see Table 3.6.2.2
If defects that do not threaten safety or reduce main performance are found in the test samples during the type test, and the manufacturer provides sufficient evidence to show that the defects are not inherent in the design but are caused by individual samples, retesting is allowed. The product standard shall specify the test items allowed for retesting, the number of retest samples and the qualification criteria, etc.
Table 3 Type test items
Inspection groups
Factory inspection| |tt||Inspection items
Appearance and dimension inspection
Measurement of electrical interlayer and creepage distance
Mechanical strength test of wiring terminals
Heat resistance test
Fire hazard test
Comparative tracking index (CTT) determination
Mechanical life test
Aging resistance test
Dielectric property test
Moisture and heat resistance test
Temperature rise test
Factory inspection is divided into routine inspection and factory sample test. 6.3.1 Routine inspection
Test method
Number of test pieces
Provided by the manufacturer or
Determined according to actual situation
Routine inspection items must be carried out on each product one by one. Products that fail the routine inspection must be repaired one by one until they pass completely, otherwise they are unqualified.
6.3.1.2 Routine inspection items are shown in Table 4:
Table 4 Routine inspection items are shown in
Inspection order
6.3.2 Factory sampling inspection
Inspection items
Marking inspection
Appearance inspection
Inspection basis
Products must be inspected by the inspection department before leaving the factory. Only qualified products can leave the factory. Remarks
6.3.2.1 According to GB/T2828, one or two sampling plans are adopted. The inspection grouping, items and other contents are shown in Table 5. Unless otherwise specified, the retest rules of factory sampling inspection shall be in accordance with the relevant provisions of GB/T2828 or GB/T2829. Strict and relaxed inspection 6.3.2.2
Transfer rules shall be in accordance with 4.6.3 of GB/T2828-[987. Table 5
Inspection group
6.4 Periodic inspection
Inspection items
Appearance and dimension inspection
Electrical performance test
Inspection basis
Factory inspection items
Unqualified classification
Inspection level II
Compound quality level
Periodic inspection is to verify whether the finalized product can maintain stable performance during the production process. The finalized product shall be inspected once every 5 years.
6.4.1 Products used for periodic inspection must be randomly selected from batch-produced products that have passed the factory inspection. Periodic inspection shall be carried out in accordance with GB/T2829 and adopt a single sampling plan.
During periodic inspection, if one inspection group fails, the periodic inspection shall be judged as unqualified. 6.4.2 The periodic inspection groups, items and number of samples are shown in Table 6. JB/T103232002
6.4.3 If only one unit fails one item during the periodic inspection, it is allowed to retest the item with double the original sampling quantity. If all the doubled quantities pass the retest, it can still be considered that the periodic inspection has passed. If there is still one unit that fails, the periodic inspection has failed. Table 6 Periodic inspection items
Inspection item name
Mechanical strength test of wiring terminals
Dielectric property test
Moisture and heat resistance test
Temperature rise test
Aging resistance test
Test method
7 Marking, packaging, transportation and storage
7.1 Marking
Unqualified classification
Judgment level
Unqualified quality level RQL
Connectors should have clear and durable markings and indicate the following: 7.1.1
Manufacturer name or trademark for identification. a)
Model and main technical data of the connector: Standard number.
The following contents should be indicated on the data sheet or instruction manual supplied with the product by the manufacturer. 7.1.2
Rated working voltage!
Rated working current:
Rated insulation voltage:
Rated impulse withstand voltage (when specified): Environmental adaptability (if different from 4.2). e)
7.2 Packaging
Sample size
Judgment array
7.2.1 The packaging of the product must be able to prevent damage during transportation and be rainproof or moisture-proof. The packaging box should generally contain a packing list, certificate of conformity and instruction manual.
7.2.2 The packaging mark should be clear and neat, and ensure that it will not become blurred due to transportation or long-term storage. The mark should generally include the following: manufacturer's name, address and trademark;
b) product name and model;
c) product quantity;
d) box size (length × width × height) and gross weight; name and address of the consignee;
f) mark with words or logos such as "electrical appliance", "handle with care", "keep away from moisture", "upward", and the year and month of packaging. 7.3 Transportation and storage
Environmental conditions for transportation and storage: The lower limit of low temperature is -25℃, the upper limit of high temperature is +55℃, and it can reach -70℃ in a short time (no more than 24h).
JB/T103232002
Appendix A
(Normative Appendix)
Minimum and maximum cross-sectional areas of copper wires suitable for connection Table A.1 is applicable to connecting one wire per terminal: Table A.1
Number of wires Area
Rated current of connector A
Cross-sectional area of single-core or multi-core hard wire
2×185
Cross-sectional area of soft wire
Note 1: If the cable is directly crimped into the connector on the terminal, the product standard shall specify the relay wire gauge or wire gauge range. Note 2: If it is necessary to use conductors other than those specified in the table, the manufacturer and the user shall sign a special technical agreement.82 Type test
The purpose of type test is to verify whether the design and performance of the connector meet the requirements of the standard. Type test shall be carried out in the following cases: a) When new products are being trial-produced,
b) When the design performance and product quality are affected by changes in process, materials or structure. When the national quality supervision agency proposes a type test requirement. c
6.2.1 Only when all samples are qualified in the sequential inspection can the type test be deemed qualified. Only products that have passed the type test can be identified.
JB/T 103232002
For type test groups, items and number of test specimens, see Table 3.6.2.2
If defects that do not threaten safety or reduce main performance are found in the test samples during the type test, and the manufacturer provides sufficient evidence to show that the defects are not inherent in the design but are caused by individual samples, retesting is allowed. The product standard shall specify the test items allowed for retesting, the number of retest samples and the qualification criteria, etc.
Table 3 Type test items
Inspection groups
Factory inspection| |tt||Inspection items
Appearance and dimension inspection
Measurement of electrical interlayer and creepage distance
Mechanical strength test of wiring terminals
Heat resistance test
Fire hazard test
Comparative tracking index (CTT) determination
Mechanical life test
Aging resistance test
Dielectric property test
Moisture and heat resistance test
Temperature rise test
Factory inspection is divided into routine inspection and factory sample test. 6.3.1 Routine inspection
Test method
Number of test pieces
Provided by the manufacturer or
Determined according to actual situation
Routine inspection items must be carried out on each product one by one. Products that fail the routine inspection must be repaired one by one until they pass completely, otherwise they are unqualified.
6.3.1.2 Routine inspection items are shown in Table 4:
Table 4 Routine inspection items are shown in
Inspection order
6.3.2 Factory sampling inspection
Inspection items
Marking inspection
Appearance inspection
Inspection basis
Products must be inspected by the inspection department before leaving the factory. Only qualified products can leave the factory. Remarks
6.3.2.1 According to GB/T2828, one or two sampling plans are adopted. The inspection grouping, items and other contents are shown in Table 5. Unless otherwise specified, the retest rules of factory sampling inspection shall be in accordance with the relevant provisions of GB/T2828 or GB/T2829. Strict and relaxed inspection 6.3.2.2
Transfer rules shall be in accordance with 4.6.3 of GB/T2828-[987. Table 5
Inspection group
6.4 Periodic inspection
Inspection items
Appearance and dimension inspection
Electrical performance test
Inspection basis
Factory inspection items
Unqualified classification
Inspection level II
Compound quality level
Periodic inspection is to verify whether the finalized product can maintain stable performance during the production process. The finalized product shall be inspected once every 5 years.
6.4.1 Products used for periodic inspection must be randomly selected from batch-produced products that have passed the factory inspection. Periodic inspection shall be carried out in accordance with GB/T2829 and adopt a single sampling plan.
During periodic inspection, if one inspection group fails, the periodic inspection shall be judged as unqualified. 6.4.2 The periodic inspection groups, items and number of samples are shown in Table 6. JB/T103232002
6.4.3 If only one unit fails one item during the periodic inspection, it is allowed to retest the item with double the original sampling quantity. If all the doubled quantities pass the retest, it can still be considered that the periodic inspection has passed. If there is still one unit that fails, the periodic inspection has failed. Table 6 Periodic inspection items
Inspection item name
Mechanical strength test of wiring terminals
Dielectric property test
Moisture and heat resistance test
Temperature rise test
Aging resistance test
Test method
7 Marking, packaging, transportation and storage
7.1 Marking
Unqualified classification
Judgment level
Unqualified quality level RQL
Connectors should have clear and durable markings and indicate the following: 7.1.1
Manufacturer name or trademark for identification. a)
Model and main technical data of the connector: Standard number.
The following contents should be indicated on the data sheet or instruction manual supplied with the product by the manufacturer. 7.1.2
Rated working voltage!
Rated working current:
Rated insulation voltage:
Rated impulse withstand voltage (when specified): Environmental adaptability (if different from 4.2). e)
7.2 Packaging
Sample size
Judgment array
7.2.1 The packaging of the product must be able to prevent damage during transportation and be rainproof or moisture-proof. The packaging box should generally contain a packing list, certificate of conformity and instruction manual.
7.2.2 The packaging mark should be clear and neat, and ensure that it will not become blurred due to transportation or long-term storage. The mark should generally include the following: manufacturer's name, address and trademark;
b) product name and model;
c) product quantity;
d) box size (length × width × height) and gross weight; name and address of the consignee;
f) mark with words or logos such as "electrical appliance", "handle with care", "keep away from moisture", "upward", and the year and month of packaging. 7.3 Transportation and storage
Environmental conditions for transportation and storage: The lower limit of low temperature is -25℃, the upper limit of high temperature is +55℃, and it can reach -70℃ in a short time (no more than 24h).
JB/T103232002
Appendix A
(Normative Appendix)
Minimum and maximum cross-sectional areas of copper wires suitable for connection Table A.1 is applicable to connecting one wire per terminal: Table A.1
Number of wires Area
Rated current of connector A
Cross-sectional area of single-core or multi-core hard wire
2×185
Cross-sectional area of soft wire
Note 1: If the cable is directly crimped into the connector on the terminal, the product standard shall specify the relay wire gauge or wire gauge range. Note 2: If it is necessary to use conductors other than those specified in the table, the manufacturer and the user shall sign a special technical agreement.82 Type test
The purpose of type test is to verify whether the design and performance of the connector meet the requirements of the standard. Type test shall be carried out in the following cases: a) When new products are being trial-produced,
b) When the design performance and product quality are affected by changes in process, materials or structure. When the national quality supervision agency proposes a type test requirement. c
6.2.1 Only when all samples are qualified in the sequential inspection can the type test be deemed qualified. Only products that have passed the type test can be identified.
JB/T 103232002
For type test groups, items and number of test specimens, see Table 3.6.2.2
If defects that do not threaten safety or reduce main performance are found in the test samples during the type test, and the manufacturer provides sufficient evidence to show that the defects are not inherent in the design but are caused by individual samples, retesting is allowed. The product standard shall specify the test items allowed for retesting, the number of retest samples and the qualification criteria, etc.
Table 3 Type test items
Inspection groups
Factory inspection| |tt||Inspection items
Appearance and dimension inspection
Measurement of electrical interlayer and creepage distance
Mechanical strength test of wiring terminals
Heat resistance test
Fire hazard test
Comparative tracking index (CTT) determination
Mechanical life test
Aging resistance test
Dielectric property test
Moisture and heat resistance test
Temperature rise test
Factory inspection is divided into routine inspection and factory sample test. 6.3.1 Routine inspection
Test method
Number of test pieces
Provided by the manufacturer or
Determined according to actual situation
Routine inspection items must be carried out on each product one by one. Products that fail the routine inspection must be repaired one by one until they pass completely, otherwise they are unqualified.
6.3.1.2 Routine inspection items are shown in Table 4:
Table 4 Routine inspection items are shown in
Inspection order
6.3.2 Factory sampling inspection
Inspection items
Marking inspection
Appearance inspection
Inspection basis
Products must be inspected by the inspection department before leaving the factory. Only qualified products can leave the factory. Remarks
6.3.2.1 According to GB/T2828, one or two sampling plans are adopted. The inspection grouping, items and other contents are shown in Table 5. Unless otherwise specified, the retest rules of factory sampling inspection shall be in accordance with the relevant provisions of GB/T2828 or GB/T2829. Strict and relaxed inspection 6.3.2.2
Transfer rules shall be in accordance with 4.6.3 of GB/T2828-[987. Table 5
Inspection group
6.4 Periodic inspection
Inspection items
Appearance and dimension inspection
Electrical performance test
Inspection basis
Factory inspection items
Unqualified classification
Inspection level II
Compound quality level
Periodic inspection is to verify whether the finalized product can maintain stable performance during the production process. The finalized product shall be inspected once every 5 years.
6.4.1 Products used for periodic inspection must be randomly selected from batch-produced products that have passed the factory inspection. Periodic inspection shall be carried out in accordance with GB/T2829 and adopt a single sampling plan.
During periodic inspection, if one inspection group fails, the periodic inspection shall be judged as unqualified. 6.4.2 The periodic inspection groups, items and number of samples are shown in Table 6. JB/T103232002
6.4.3 If only one unit fails one item during the periodic inspection, it is allowed to retest the item with double the original sampling quantity. If all the doubled quantities pass the retest, it can still be considered that the periodic inspection has passed. If there is still one unit that fails, the periodic inspection has failed. Table 6 Periodic inspection items
Inspection item name
Mechanical strength test of wiring terminals
Dielectric property test
Moisture and heat resistance test
Temperature rise test
Aging resistance test
Test method
7 Marking, packaging, transportation and storage
7.1 Marking
Unqualified classification
Judgment level
Unqualified quality level RQL
Connectors should have clear and durable markings and indicate the following: 7.1.1
Manufacturer name or trademark for identification. a)
Model and main technical data of the connector: Standard number.
The following contents should be indicated on the data sheet or instruction manual supplied with the product by the manufacturer. 7.1.2
Rated working voltage!
Rated working current:
Rated insulation voltage:
Rated impulse withstand voltage (when specified): Environmental adaptability (if different from 4.2). e)
7.2 Packaging
Sample size
Judgment array
7.2.1 The packaging of the product must be able to prevent damage during transportation and be rainproof or moisture-proof. The packaging box should generally contain a packing list, certificate of conformity and instruction manual.
7.2.2 The packaging mark should be clear and neat, and ensure that it will not become blurred due to transportation or long-term storage. The mark should generally include the following: manufacturer's name, address and trademark;
b) product name and model;
c) product quantity;
d) box size (length × width × height) and gross weight; name and address of the consignee;
f) mark with words or logos such as "electrical appliance", "handle with care", "keep away from moisture", "upward", and the year and month of packaging. 7.3 Transportation and storage
Environmental conditions for transportation and storage: The lower limit of low temperature is -25℃, the upper limit of high temperature is +55℃, and it can reach -70℃ in a short time (no more than 24h).
JB/T103232002
Appendix A
(Normative Appendix)
Minimum and maximum cross-sectional areas of copper wires suitable for connection Table A.1 is applicable to connecting one wire per terminal: Table A.1
Number of wires Area
Rated current of connector A
Cross-sectional area of single-core or multi-core hard wire
2×185
Cross-sectional area of soft wire
Note 1: If the cable is directly crimped into the connector on the terminal, the product standard shall specify the relay wire gauge or wire gauge range. Note 2: If it is necessary to use conductors other than those specified in the table, the manufacturer and the user shall sign a special technical agreement.82 Factory sampling inspection
Inspection items
Marking inspection
Appearance inspection
Inspection basis
Products must be inspected by the inspection department before leaving the factory. They can only leave the factory after they pass the inspection. Remarks
6.3.2.1 According to GB/T2828, one or two sampling plans are adopted. The inspection grouping, items and other contents are shown in Table 5. Unless otherwise specified, the retest rules of factory sampling inspection shall be in accordance with the relevant provisions of GB/T2828 or GB/T2829. 6.3.2.2
Strict and relaxed inspection, transfer rules shall be in accordance with 4.6.3 of GB/T2828-[987. Table 5
Inspection group
6.4 Periodic inspection
Inspection items
Appearance and dimension inspection
Electrical performance test
Inspection basis
Factory inspection items
Unqualified classification
Inspection level II
Compound quality level
Periodic inspection is to verify whether the finalized product can maintain stable performance during the production process. The finalized product shall be inspected once every 5 years.
6.4.1 Products used for periodic inspection must be randomly selected from batch-produced products that have passed the factory inspection. Periodic inspection shall be carried out in accordance with GB/T2829 and adopt a single sampling plan.
During periodic inspection, if one inspection group fails, the periodic inspection shall be judged as unqualified. 6.4.2 The periodic inspection groups, items and number of samples are shown in Table 6. JB/T103232002
6.4.3 If only one unit fails one item during the periodic inspection, it is allowed to retest the item with double the original sampling quantity. If all the doubled quantities pass the retest, it can still be considered that the periodic inspection has passed. If there is still one unit that fails, the periodic inspection has failed. Table 6 Periodic inspection items
Inspection item name
Mechanical strength test of wiring terminals
Dielectric property test
Moisture and heat resistance test
Temperature rise testbZxz.net
Aging resistance test
Test method
7 Marking, packaging, transportation and storage
7.1 Marking
Unqualified classification
Judgment level
Unqualified quality level RQL
Connectors should have clear and durable markings and indicate the following: 7.1.1
Manufacturer name or trademark for identification. a)
Model and main technical data of the connector: Standard number.
The following contents should be indicated on the data sheet or instruction manual supplied with the product by the manufacturer. 7.1.2
Rated working voltage!
Rated working current:
Rated insulation voltage:
Rated impulse withstand voltage (when specified): Environmental adaptability (if different from 4.2). e)
7.2 Packaging
Sample size
Judgment array
7.2.1 The packaging of the product must be able to prevent damage during transportation and be rainproof or moisture-proof. The packaging box should generally contain a packing list, certificate of conformity and instruction manual.
7.2.2 The packaging mark should be clear and neat, and ensure that it will not become blurred due to transportation or long-term storage. The mark should generally include the following: manufacturer's name, address and trademark;
b) product name and model;
c) product quantity;
d) box size (length × width × height) and gross weight; name and address of the consignee;
f) mark with words or logos such as "electrical appliance", "handle with care", "keep away from moisture", "upward", and the year and month of packaging. 7.3 Transportation and storage
Environmental conditions for transportation and storage: The lower limit of low temperature is -25℃, the upper limit of high temperature is +55℃, and it can reach -70℃ in a short time (no more than 24h).
JB/T103232002
Appendix A
(Normative Appendix)
Minimum and maximum cross-sectional areas of copper wires suitable for connection Table A.1 is applicable to connecting one wire per terminal: Table A.1
Number of wires Area
Rated current of connector A
Cross-sectional area of single-core or multi-core hard wire
2×185
Cross-sectional area of soft wire
Note 1: If the cable is directly crimped into the connector on the terminal, the product standard shall specify the relay wire gauge or wire gauge range. Note 2: If it is necessary to use conductors other than those specified in the table, the manufacturer and the user shall sign a special technical agreement.82 Factory sampling inspection
Inspection items
Marking inspection
Appearance inspection
Inspection basis
Products must be inspected by the inspection department before leaving the factory. They can only leave the factory after they pass the inspection. Remarks
6.3.2.1 According to GB/T2828, one or two sampling plans are adopted. The inspection grouping, items and other contents are shown in Table 5. Unless otherwise specified, the retest rules of factory sampling inspection shall be in accordance with the relevant provisions of GB/T2828 or GB/T2829. 6.3.2.2
Strict and relaxed inspection, transfer rules shall be in accordance with 4.6.3 of GB/T2828-[987. Table 5
Inspection group
6.4 Periodic inspection
Inspection items
Appearance and dimension inspection
Electrical performance test
Inspection basis
Factory inspection items
Unqualified classification
Inspection level II
Compound quality level
Periodic inspection is to verify whether the finalized product can maintain stable performance during the production process. The finalized product shall be inspected once every 5 years.
6.4.1 Products used for periodic inspection must be randomly selected from batch-produced products that have passed the factory inspection. Periodic inspection shall be carried out in accordance with GB/T2829 and adopt a single sampling plan.
During periodic inspection, if one inspection group fails, the periodic inspection shall be judged as unqualified. 6.4.2 The periodic inspection groups, items and number of samples are shown in Table 6. JB/T103232002
6.4.3 If only one unit fails one item during the periodic inspection, it is allowed to retest the item with double the original sampling quantity. If all the doubled quantities pass the retest, it can still be considered that the periodic inspection has passed. If there is still one unit that fails, the periodic inspection has failed. Table 6 Periodic inspection items
Inspection item name
Mechanical strength test of wiring terminals
Dielectric property test
Moisture and heat resistance test
Temperature rise test
Aging resistance test
Test method
7 Marking, packaging, transportation and storage
7.1 Marking
Unqualified classification
Judgment level
Unqualified quality level RQL
Connectors should have clear and durable markings and indicate the following: 7.1.1
Manufacturer name or trademark for identification. a)
Model and main technical data of the connector: Standard number.
The following contents should be indicated on the data sheet or instruction manual supplied with the product by the manufacturer. 7.1.2
Rated working voltage!
Rated working current:
Rated insulation voltage:
Rated impulse withstand voltage (when specified): Environmental adaptability (if different from 4.2). e)
7.2 Packaging
Sample size
Judgment array
7.2.1 The packaging of the product must be able to prevent damage during transportation and be rainproof or moisture-proof. The packaging box should generally contain a packing list, certificate of conformity and instruction manual.
7.2.2 The packaging mark should be clear and neat, and ensure that it will not become blurred due to transportation or long-term storage. The mark should generally include the following: manufacturer's name, address and trademark;
b) product name and model;
c) product quantity;
d) box size (length × width × height) and gross weight; name and address of the consignee;
f) mark with words or logos such as "electrical appliance", "handle with care", "keep away from moisture", "upward", and the year and month of packaging. 7.3 Transportation and storage
Environmental conditions for transportation and storage: The lower limit of low temperature is -25℃, the upper limit of high temperature is +55℃, and it can reach -70℃ in a short time (no more than 24h).
JB/T103232002
Appendix A
(Normative Appendix)
Minimum and maximum cross-sectional areas of copper wires suitable for connection Table A.1 is applicable to connecting one wire per terminal: Table A.1
Number of wires Area
Rated current of connector A
Cross-sectional area of single-core or multi-core hard wire
2×185
Cross-sectional area of soft wire
Note 1: If the cable is directly crimped into the connector on the terminal, the product standard shall specify the relay wire gauge or wire gauge range. Note 2: If it is necessary to use conductors other than those specified in the table, the manufacturer and the user shall sign a special technical agreement.81
Number of conductors Area
Connector rating
Current A
Single-core or multi-core hard conductor cross-sectional area
2×185
Soft conductor cross-sectional area
Note 1: If the cable is directly crimped into the connector on the terminal, the product standard should specify the relay wire gauge or wire gauge range. Note 2: If it is necessary to use conductors other than those specified in the table, the manufacturer and the user should sign a special technical agreement.1
Number of conductors Area
Connector rating
Current A
Single-core or multi-core hard conductor cross-sectional area
2×185
Soft conductor cross-sectional area
Note 1: If the cable is directly crimped into the connector on the terminal, the product standard should specify the relay wire gauge or wire gauge range. Note 2: If it is necessary to use conductors other than those specified in the table, the manufacturer and the user should sign a special technical agreement.
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