Some standard content:
National Standard of the People's Republic of China
General specification for terminals
General specification for terminals1 Subject content and scope of application
GB/T 15286—94
This standard specifies the types, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of terminal parts. This standard applies to terminal parts that are connected by stranded wires with a cross-sectional area of 0.05~10 mm2 or hard wires with a diameter of 0.25~3.6 mm and non-insulated or pre-insulated crimping tubes without soldering. This standard should be used together with the relevant detailed specifications. When this standard is inconsistent with the detailed specifications, the provisions of the detailed specifications shall prevail. This standard does not apply to contacts installed on an insulating substrate. 2 Reference standards
Packaging, storage and transportation pictorial symbols
GB2421
Basic environmental test procedures for electrical products General rules for batch inspection Count sampling procedures and sampling tables (applicable to inspection of continuous batches) GB 2828
Terms and terms for electromechanical components for electronic equipment
GB 4210
Part 2: General inspection, electrical continuity, contact resistance test, insulation test and voltage stress test GB5095.2 Basic test procedures and measurement methods for electromechanical components for electronic equipment GB 5095.4
GB 5095.6
GB 5095.7
Basic test procedures and measurement methods for electromechanical components for electronic equipment Part 4: Dynamic stress test Basic test procedures and measurement methods for electromechanical components for electronic equipment Part 6: Climatic test and solderability test Basic test procedures and measurement methods for electromechanical components for electronic equipment Part 7: Mechanical operation test and sealing test
Basic test procedures and measurement methods for electromechanical components for electronic equipment, Part 8: Mechanical tests for connectors, contacts and terminals GB 5095.8
Mechanical tests
GB 5095. 9
3 Terms
Basic test procedures and measurement methods for electromechanical components for electronic equipment Part 2: Cable clamping test, explosion hazard test, chemical corrosion resistance test, combustion hazard test, radio frequency resistance test, capacitance test, shielding and filtering test, magnetic interference test
The terms used in this standard are included in GB4210, and the following supplementary terms and definitions should also be used. 3.1 Quick-connect terminal A terminal with separable contacts. This connection consists of a male contact (plug) and a female contact (jack), which can be quickly inserted and removed without tools. 3.2 Tongue-type terminal A type of electrical connector. The end of this terminal is tongue-shaped. 3.3 Solder terminal Solder terminal Approved by the State Technical Supervision Week on December 6, 1994 and implemented on July 1, 1995
GB/T 15286-94
A type of electrical connector. The end of this terminal is in the shape of a pin, which can be directly inserted into the printed circuit board and the connection is completed by soldering. 3.4 Closed terminal Splicc
A type of electrical connector. This terminal can complete a permanent connection between two or more wires. 3.5 Crimp barrel
A wire rod designed to receive one or more conductors and to be crimped with a crimping tool. 3.6 Insulation-grin
The part of the terminal used for crimping the insulation layer of the wire. 3.7 Per-insulaled crimp barrel A crimp barrel with a permanent insulation layer, through which the crimping is performed. 3.8 Open crimp barrel Before crimping, it has an open shape, i.e., a U-shaped or shaped crimp barrel. 3.9 Closed crimp barrel Before crimping, it has a closed shape. 4 Categories
4.1 According to the different basic structures of the terminal, it can be divided into two categories: pre-insulated terminal (see Figure 1) and ordinary (no insulation layer, bare) terminal (see Figure 2).
4.2 According to the different types of the terminal lead-out ends, they can be divided into three types: tongue type (see Figure 3), welding type (see Figure 4) and quick type (see Figure 5). Figure 4
4.3 According to the different structures of the crimping barrels of the terminal, they can be divided into two types: open crimping barrels: see Figure 21 and closed crimping barrels (see Figure 6). Figure 6
GB/T 15286
4.4 Among the ordinary terminal parts, according to their different shapes, they can be divided into straight type (see Figure 7), flag type (see Figure 8) and round, fork type (see Figure 9) and other types.
5 Model naming
This standard recommends the main code of each type of terminal model as shown in Table 1. Detailed specifications can supplement the specification of its characteristic code. Table 1
Terminal category
Ordinary jumper
Model main code
Rated value
Applicable wire range
Terminal name
Tongue-type terminal
Welding terminal
Quick-connect terminal
Closed terminal
Model main code
Detailed specifications shall specify the applicable wire types and the size range of their cross-sectional areas. 6.2 Rated operating temperature current characteristic curve
Detailed specifications shall specify the temperature current characteristic curve of the terminal. 7 Marking
The terminal shall have a clear and firm manufacturer's trademark or mark. 8 Technical requirements and test methods
8.1 Standard test conditions
Pre-insulated terminal
Terminal name
Pre-insulated tongue-type terminal
Tilted insulated welding terminal
Insulated quick-connect terminal
Pre-insulated closed-type terminal
Unless otherwise specified, all tests shall be carried out under the standard atmospheric conditions specified in GB2421. 8.2 Before the test, the sample shall not be subjected to any routine cleaning treatment, but shall be pretreated for 21 hours under the standard atmospheric conditions of the test. 8.3 Structural dimensions
8.3.1 Requirements
The structure, appearance, installation and connection dimensions of the terminal shall comply with the provisions of the detailed specifications. 8.3.2 Test method
Inspect and measure in accordance with the provisions of GB5095.2 test 1b. 8.4 Appearance quality
8.4. 1 Requirements
The surface of the terminal should be clean, without cracks, burrs and rust that affect its use. The marking should be clear and firm. 8.4.2 Test method
Inspect according to the provisions of GB5095.2 test 1a. 8.5 Contact resistance
GB/T15286—94
8.5.1 Requirements
The contact resistance of the crimping part of the terminal should comply with the provisions of Figure 10. 3.3-
u, 06 -
0.5u.75 1.01.5
Conductor area, mm
Curve A-maximum value of initial contact flash; Curve R-maximum value of contact current change after electrical or climatic test Note: (① Figure 10 shows the contact resistance of the crimped connection between a copper conductor and a steel crimping sleeve (K=1). ②If the crimping sleeve is not made of copper, the measured contact resistance value should be multiplied by the K coefficient. K adopts the resistivity of the material/steel resistivity
③The contact resistance value after electrical or pneumatic test should be the sum of curve B in Figure 10 and the initial measured current value. 10.0
8.5.2 Test method
Measure according to the provisions of GB5095.2 test 2a or 2b. If the 2h method is used, the test current should be 1A per square millimeter of cross-sectional area, and the test power-on time should be as long as possible. Can be shorted to prevent the test piece from being heated. The contact resistance can be measured by any method that ensures good contact; if a test probe is used for measurement, care should be taken to avoid damaging the core wire. During the test, the terminal parts should be connected as specified in Figure 11. Point B should be as close as possible to the wire in the crimping tube, and should not touch the end of the wire. In order to ensure stable and reproducible test results, good contact with the stranded wire must be maintained, and point D should be a safe distance away from the crimping connection. The following formula can be used:
R. =Rp-(X/100)·Ruc
Pre-insulated crimping tube
Combined crimping tube
With insulating clip
Open crimping tube
Open crimping barrel
8.6 Crimping tensile strength
8.6.1 Requirements
GB/T15286-94
Connection point
Remove insulation layer
Re-crimping contact resistance, Rep-resistance measured between BD; R1s-wire resistance of D~E (100mm), X-distance between the end of the crimping barrel and point D (X is recommended to be between 25 and 100)
After the terminal is crimped according to the application specifications specified by the manufacturer, the crimping tensile strength shall comply with the provisions of Figure 12 5
GB/T15286-94
Conductor cross-sectional area, mm
Also, the outermost value of the tensile strength of the closed crimping: the tensile strength of the curved parallel crimping tube and the insulating crimping barrel is the minimum value 8.6.2 Test method
Perform according to the provisions of GB5095.8 test 16d. When stranded wire is used, the cross-sectional area of the stranded wire is calculated according to the number of strands and the nominal diameter of each strand. 8.7 Current cycle
8.7.1 Requirements
Terminals shall be able to withstand 500 current cycle tests, and the contact resistance shall comply with the provisions of 8.5. 8.7.2 Test method
Unless otherwise specified in the detailed specification, the samples shall be connected in series as shown in Figures 13 and 14 before the test so that the current can pass through all the test samples at the same time. If necessary, double-terminal samples may be used. The length of the wire between the two samples shall be about 200 mm. To avoid heat loss, the samples and wires shall be supported by supports made of insulating materials with low thermal conductivity. During the test, a cyclic test shall be carried out according to the test current shown in Figure 15 (or the test current specified in the detailed specification). Each cycle shall be 45 minutes with power on and 15 minutes without current. After the conditional test is completed, the contact resistance shall be checked after 1 hour of recovery under the standard atmospheric conditions of the test. 40.0
GB/T15286-94
Terminal with lead-out terminal
About 20mm
Terminal with separable contact
About 20%mm
0.50.731.0
Small body cross section mm
Company: This song is suitable for relatively large wire crimping connection with a cross-sectional area of 0.05~10mm. 1.5
4.06.010.0
8.8 Temperature change
8. 8-1 Requirements
GB/T 15286-94
Terminals should be able to withstand the test of extreme high and low temperature changes for 5 cycles as specified in the detailed specifications. After the test, the contact resistance should meet the requirements of Article 8.5.
8.8.2 Test method
Test according to GB5095.6 test 11d. The exposure time in high and low temperature is 30min. After the conditional test, recover under normal conditions for 1h and check the contact resistance. 8.9 Climate sequence test
8.9. 1 Requirements
Termination parts should be able to withstand climate sequence test. Among them, the high temperature test is 96h, the temperature is specified by the detailed specifications, and the alternating damp heat test is 6 cycles. The temperature is 55℃: the low temperature test is 2h, the temperature is specified by the detailed specifications. After the test, the contact resistance should meet the requirements of Article 8.5. 8.9.2 Test method
Test according to GB5095.6 test 11a. After the conditional test, recover under normal conditions for 1h and check the contact resistance. 8.10 Insulation clamp effect
8. 10.1 Requirement
The insulation clamp of the terminal should be able to withstand 2 winding tests without mechanical damage. 8.10.2 Test method
The test should be carried out according to GB 5095.8 test 16h. 8.11 Insertion force and withdrawal force
8.11-1 Requirement
The detailed evaluation specification of TK (TJK) type quick-connect terminal should specify the insertion force and withdrawal force of the terminal. 8.11.2 Test method
The test should be carried out according to G35095.8 test 16e.
8.12 Solderability
8.12.1 Requirement
The inserted welding part of TII (TJH) type welding terminal should be wetted by molten solder, and the pot area should be more than 90% of the immersion area.
8.12.2 Test method
Test in accordance with GB2423.28 test Ta. Before the test, care should be taken to prevent the test terminals from being touched or otherwise contaminated. After the test, inspect the tinning condition by daylight.
8.13 Withstand voltage
8.13.1 Requirement
The insulation layer sheath and contact of the pre-insulated terminal should be able to withstand a test voltage of 1500V (50Hz effective value) for 1min without breakdown or flying scratches.
8.13.2 Test method
Test in accordance with GB 5095. 4 test 4c. 8.14 Low temperature crimping
8.14.1 Requirement
Pre-insulated terminal should be able to withstand the test of low temperature crimping without mechanical damage, and the withstand voltage should comply with the provisions of Article 8.13. 8.14.2 Test method
Put the test tools and samples at -15±2℃ for 2h, take them out and crimp them; then keep them at this temperature for 1h. After the conditional test, check the appearance and withstand voltage after 1h under normal conditions. 8.15 Solvent resistance of pre-insulated crimping tube
GB/T15286—94
8.15.1 Requirements
The pre-insulated crimping tube of the pre-insulated terminal should be able to withstand the influence of the cleaning solvent without mechanical damage, and the withstand voltage should comply with the provisions of Article 8.13
8.15.2 Test method
The test is carried out in accordance with GB5095.9 test 19a. The test solvent and test temperature are specified by the detailed specifications. After the conditional test, check the appearance and withstand voltage after 1h under normal conditions. 8.16 Flame retardancy of pre-insulated crimped tubes
8.16.1 Requirements
The pre-insulated crimped tubes of pre-insulated terminal parts shall be flame retardant, and their flame retardant performance shall comply with the provisions of Appendix A of this standard or shall not be lower than the flame retardant grade of the wire used.
8.16.2 Test method
The test shall be carried out according to the method specified in Appendix A of this standard or the test shall be carried out according to the burning test method of the wire in accordance with the provisions of the detailed specification. 8.17 High temperature
8.17.1 Requirements
The pre-insulated terminal parts shall be able to withstand the test of the extreme high temperature specified in the detailed specification for 96h, and their withstand voltage shall comply with the provisions of Article 8.13 and have no mechanical damage.
8.17.2 Test method
The test shall be carried out according to GB5095.6 test 11i. The test temperature shall be specified by the detailed specification. After the conditional test is completed, the appearance and withstand voltage shall be checked after 1h of recovery under normal conditions.
9 Inspection rules
9.1 All terminal parts that meet the requirements of this standard must undergo identification tests and quality consistency tests. 9.2 The test specimens shall be manufactured in accordance with the provisions of the detailed specifications and the approved production process. The length of the wire crimped on the test specimen shall be at least 150mm (the wire length of the test specimen for the current cycle test shall be 200mm). 9.3 Preparation of test samples
9.3.1 The samples for the test are divided into 7 types: A, BC, D, E, F, and G. The regulations are as follows: A-any type of terminal parts, crimped with the wire to form an electrical connection between the wire and the crimping tube: B-ordinary or pre-insulated terminal parts with insulation clips, composed of wires without stripping the outer skin. When preparing, the wire without stripping the outer skin should be inserted into the insulation clip only, so that during the normal crimping operation, only the insulation clip is crimped with it, and the wire and the crimping tube should be electrically connected.
C--Select any pre-insulated terminal piece of any specification, crimp it with the wire, and form an electrical connection between the wire and the crimping barrel (if it has an insulating clip, it should be crimped together). At the other end of the wire, the insulation layer should be removed to expose the core wire! D--Select any pre-insulated terminal piece of any specification, crimp it with the wire, and form an electrical connection between the wire and the crimping barrel (if it has an insulating clip, it should be crimped together). The insulation layer of the wire should be removed according to the provisions of Figure 16; before closed crimping with a clamp
closed medical connector
opening with insulation
opening H: Abstract
CB/T15286-94
remove the insulation layer
E--select any specification of pre-insulated terminal and a wire with removed insulation layer (as shown in Figure 17), and the other end of the wire should also be removed. Exit line:
pre-insulated terminal with insulation clamp before crimping
remove the insulation layer
select any specification of TK (TJK) type terminal, do not crimp the wire; select any specification of TH (TJH) type terminal, do not crimp the wire, G-.
9.4 Number of samples required for the test
The number of samples required for the test shall comply with the provisions of Table 2. Table 2
Qualification test
Number required in any case
Insulation effect test
Additional test
Pre-insulation crimping test
Cyclic test
Number required in any case
Additional test
Insulation clamping effect test
Pre-insulation crimping test
Cyclic test
Note: 1) When the qualification test requires the 6th and 7th group tests, 6 samples should be added for each. 2) When the periodic inspection requires the testing of keyless crimping and/or wires, 20 samples can be taken for 20 current cycle tests. 9.5 Qualification test
9.5.1 The purpose of the qualification test is to determine whether the manufacturer is capable of producing products that meet this standard. The test should be carried out in a laboratory that meets the requirements.
9.5.2 The samples for the qualification test should be prepared according to the normal production process and manufactured according to the requirements of this standard. The minimum number of samples shall be as specified in Table 2. 9.5.3 The requirements, test items and sequence of the qualification test shall be as specified in Table 3. All samples shall first pass the test of group 0 and then be divided into other groups.
GB/T15286—94
9.5.4 The backup samples are used to replace the allowable unqualified samples of group 0, and can also be used to replace unqualified products caused by non-manufacturing reasons. 9.5.5 The qualification test is qualified when the number of unqualified products in each group and each test does not exceed the allowable number of unqualified products. Table 3
Test items
Group D (all samples)
Appearance quality
Structural dimensions
Group 1 (A samples)
Crimp tensile strength
Group 2 (D samples)
Contact resistance
Current cycle
Group 3 (D samples)
Contact resistance
Temperature change
Climate sequence
Group 1 (B samples)bZxz.net
Insulation clamp effect
Group 5 (C samples)
Group 6 (C samples)
Pre-insulated crimped tube endurance Solvent resistance
Group C (sample)
Flame retardancy of pre-insulated crimping
Group 8 (sample E)
Low temperature crimping
Group 9 (sample F)
Insertion force and extraction force
Group 10 (sample G)
Portability
This standard
Number of samples
Number of unqualified products allowed for each test
Number of unqualified products allowed for each test
Note: () It depends on the needs of the terminal products identified in the 4th, 5th, 6th, 7th, 8th, 9th and 10th groups of regulations. When the identification test items are changed (according to the detailed specifications), the total number of samples should be adjusted accordingly,
2 Backup samples 2 pieces.
9.6 Quality consistency inspection
Quality consistency inspection includes two types: batch inspection and periodic inspection. 9.6.1 Batch inspection
9.6-1.1 Batch inspection is in accordance with the provisions of GR2828, using: - sampling plan, random sampling of samples. 9.6.1.2 The test items, inspection level (IL) and acceptable quality level (AQI.) of batch inspection shall be in accordance with the provisions of Table 4. Table 4
9.6.2 Periodic inspection
Test item Month
Appearance quality
Structural dimensions
Clause number of this standard
The specimens for periodic inspection shall be manufactured by the manufacturer according to the provisions of this standard and the approved process. The minimum number of samples shall comply with the provisions of Table 2. 9.6-2.1 Periodic inspection shall be carried out once a year. It is also necessary to carry out the periodic inspection when the production is resumed after stopping production for more than 3 months or when the main process and main material of the structure are changed (at least the periodic test items related to the change shall be carried out). GB/T 15286—94
9.6.2.2 The samples for periodic inspection shall be taken from the inspection batches currently produced and inspected batch by batch. After passing the test, they shall be crimped into test specimens according to the manufacturer's application specifications. Then, they shall be grouped according to the periodic inspection test table specified in Table 5. Each group of samples shall be subjected to all test items of the group. Table 5
Test items
Group 1 (A sample)
Crimp tensile strength
Group 2 (D sample)
Fusing resistance
Weir ring
Group (B sample)
Insulation clamp effect
Group 4 (C sample)
Group 5 (F sample)
Insulation force and withdrawal force
Group 6 (G sample) )
Weldability
Group C (Sample)
Flame retardancy of pre-insulated crimp barrels
Clause number of this standard
Number of samples
Number of unqualified products allowed for each test
Number of unqualified products allowed for each group of tests
Note: Groups 2 to 7 of tests depend on the needs of the terminal products tested. When the test items change (as specified in the detailed specifications), the total number of samples should be adjusted accordingly.
9.6.2.3 If the periodic inspection is judged to be unqualified, the product will be stopped from acceptance. Acceptance can only be resumed after the new periodic inspection is qualified. 9.6.2.4 Periodic inspection test reports can be provided according to the requirements of the ordering party. 10 Packaging, transportation and storage
10.1 Packaging
10.1.1 Packaging should be carried out according to the specific conditions of the product, and the following items should be considered: moisture-proof, vibration-proof, dust-proof requirements,
adapt to the relevant requirements of transportation and loading and unloading.
10.1.2 The packaging should be marked with "product code", "quantity", "manufacturer's trademark", "production date" and "inspection pass seal of the technical inspection department", etc. The marking should comply with the provisions of GB191. 10.1.3 The packaging box should be firm, and the product should not move in the box to avoid damage during transportation. 10.2 Transportation
Terminals are allowed to be transported by any method, but they should avoid direct rain and snow and mechanical damage. 10.3 Storage
Terminals are stored in a warehouse with a temperature of -5℃~35℃, a relative humidity of no more than 80%, and no acid, thieves or other corrosive gases in the surrounding air.5 The identification test is qualified when the number of unqualified products in each group and each test does not exceed the allowed number of unqualified products. Table 3
Test items
Group D (all samples)
Appearance quality
Structural dimensions
Group 1 (Sample A)
Crimp tensile strength
Group 2 (Sample D)
Contact resistance
Current cycle
Group 3 (Sample D)| |tt||Contact resistance
Temperature change
Climate order
Group 1 (B sample)
Insulation clamp effect
5 (C sample)
6 (C sample)
Solvent resistance of pre-insulating crimping
Group (C sample)
Pre-extinction Flame retardant of edge crimping
8 groups (E sample)
Low temperature crimping
9 groups (F sample)
Insert manpower and pull-out force
10 groups (G sample)
Posability
This standard
Number of samples
Term per test permitted
No Number of qualified products
permitted products per group of tests
number of unqualified products
|Note: () The requirements for the termination products identified in groups 4, 5, 6, 7, 8.9.10 shall be determined. When there are changes in the identification test items (as specified in the detailed specifications), the total number of samples should be adjusted accordingly,
2 2 backup samples.
9.6 Quality consistency inspection
Quality consistency inspection includes batch inspection and periodic inspection. 9.6.1 Batch inspection
9.6-1.1 Batch inspection is in accordance with the provisions of GR2828, using: -sampling plan, random sampling of samples. 9.6.1.2 The test items, inspection level (IL) and acceptable quality level (AQI.) for batch inspection shall be as specified in Table 4. Table 4
9. 6. 2 Periodic inspection
Test item Month
Appearance quality
Structural dimensions
Clause number of this standard
The specimens for periodic inspection shall be manufactured by the manufacturer in accordance with the provisions of this standard and the approved process. The minimum number of samples shall comply with the provisions of Table 2. 9.6-2.1 Periodic inspection shall be carried out once a year. It is also necessary to carry out the test when the production is resumed after being stopped for more than 3 months or when the main process or main material of the structure is changed (at least the periodic test items related to the change should be carried out). GB/T 15286—94
9.6.2.2 Samples for periodic inspection should be taken from the inspection batches currently produced and inspected batch by batch. After passing the test, the samples are crimped into specimens according to the manufacturer's application specifications, and then grouped according to the periodic inspection test table specified in Table 5. Each group of samples should be subjected to all test items in the group. Table 5
Test items
Group 1 (Sample A)
Crimp tensile strength
Group 2 (D Xiangpin)
Fust fusion resistance
Wei Liuche ring
Group (Sample B)
Insulation clamp effect
Group 4 (Sample C)
Group 5 (Sample F )
Insert manpower and pull-out force
6 groups (G sample)
Solderability
7 groups (C sample)
Fire retardancy of pre-insulated crimp barrel
This standard
Terms number
Number of samples
Permitted per test
Number of unqualified products
permitted products per set of tests
number of unqualified products
|Note: The 2nd to 7th tests depend on the needs of the termination products tested. When there are changes in the test items (as specified in the detailed specifications), the total number of samples should be adjusted accordingly.
9.6.2.3 If the periodic inspection determines that the product is unqualified, the product acceptance will be stopped. Acceptance can only be resumed after the new cycle inspection is passed. 9.6.2.4 Periodic inspection test reports can be provided upon request of the ordering party. 10 Packaging, transportation and storage
10.1 Packaging
10.1.1 Packaging should be carried out according to the specific conditions of the product, and the following items should be considered: moisture-proof, vibration-proof, dust-proof requirements,
adapt to the relevant requirements of transportation and loading and unloading.
10.1.2 The packaging should be marked with "product code", "quantity", "manufacturer's trademark", "production date" and "inspection pass seal of the technical inspection department", etc. The marking should comply with the provisions of GB191. 10.1.3 The packaging box should be firm and the product should not move in the box to avoid damage during transportation. 10.2 Transportation
Terminal fittings can be transported by any method, but direct rain and snow and mechanical damage should be avoided. 10.3 Storage
Terminal fittings should be stored in a warehouse with a temperature of -5℃~35℃, a relative humidity of no more than 80%, and no acid, thieves or other corrosive gases in the surrounding air.5 The identification test is qualified when the number of unqualified products in each group and each test does not exceed the allowed number of unqualified products. Table 3
Test items
Group D (all samples)
Appearance quality
Structural dimensions
Group 1 (Sample A)
Crimp tensile strength
Group 2 (Sample D)
Contact resistance
Current cycle
Group 3 (Sample D)| |tt||Contact resistance
Temperature change
Climate order
Group 1 (B sample)
Insulation clamp effect
5 (C sample)
6 (C sample)
Solvent resistance of pre-insulating crimping
Group (C sample)
Pre-extinction Flame retardant of edge crimping
8 groups (E sample)
Low temperature crimping
9 groups (F sample)
Insert manpower and pull-out force
10 groups (G sample)
Posability
This standard
Number of samples
Term per test permitted
No Number of qualified products
permitted products per group of tests
number of unqualified products
|Note: () The requirements for the termination products identified in groups 4, 5, 6, 7, 8.9.10 shall be determined. When there are changes in the identification test items (as specified in the detailed specifications), the total number of samples should be adjusted accordingly,
2 2 backup samples.
9.6 Quality consistency inspection
Quality consistency inspection includes batch inspection and periodic inspection. 9.6.1 Batch inspection
9.6-1.1 Batch inspection is in accordance with the provisions of GR2828, using: -sampling plan, random sampling of samples. 9.6.1.2 The test items, inspection level (IL) and acceptable quality level (AQI.) for batch inspection shall be as specified in Table 4. Table 4
9. 6. 2 Periodic inspection
Test item Month
Appearance quality
Structural dimensions
Clause number of this standard
The specimens for periodic inspection shall be manufactured by the manufacturer in accordance with the provisions of this standard and the approved process. The minimum number of samples shall comply with the provisions of Table 2. 9.6-2.1 Periodic inspection shall be carried out once a year. It is also necessary to carry out the test when the production is resumed after being stopped for more than 3 months or when the main process or main material of the structure is changed (at least the periodic test items related to the change should be carried out). GB/T 15286—94
9.6.2.2 Samples for periodic inspection should be taken from the inspection batches currently produced and inspected batch by batch. After passing the test, the samples are crimped into specimens according to the manufacturer's application specifications, and then grouped according to the periodic inspection test table specified in Table 5. Each group of samples should be subjected to all test items in the group. Table 5
Test items
Group 1 (Sample A)
Crimp tensile strength
Group 2 (D Xiangpin)
Connection and fuse resistance
Wei Liuche ring
Group (Sample B)
Insulation clamp effect
Group 4 (Sample C)
Group 5 (Sample F )
Insert manpower and pull-out force
6 groups (G sample)
Solderability
7 groups (C sample)
Fire retardancy of pre-insulated crimp barrel
This standard
Terms number
Number of samples
Permitted per test
Number of unqualified products
permitted products per set of tests
number of unqualified products
|Note: The 2-7th tests depend on the needs of the termination products tested. When there are changes in the test items (as specified in the detailed specifications), the total number of samples should be adjusted accordingly.
9.6.2.3 If the periodic inspection determines that the product is unqualified, the product acceptance will be stopped. Acceptance can only be resumed after the new cycle inspection is passed. 9.6.2.4 Periodic inspection test reports can be provided upon request of the ordering party. 10 Packaging, transportation and storage
10.1 Packaging
10.1.1 Packaging should be carried out according to the specific conditions of the product, and the following items should be considered: moisture-proof, vibration-proof, dust-proof requirements,
adapt to the relevant requirements of transportation and loading and unloading.
10.1.2 The packaging should be marked with "product code", "quantity", "manufacturer's trademark", "production date" and "inspection pass seal of the technical inspection department", etc. The marking should comply with the provisions of GB191. 10.1.3 The packaging box should be firm and the product should not move in the box to avoid damage during transportation. 10.2 Transportation
Terminal fittings can be transported by any method, but direct rain and snow and mechanical damage should be avoided. 10.3 Storage
Terminal fittings should be stored in a warehouse with a temperature of -5℃~35℃, a relative humidity of no more than 80%, and no acid, thieves or other corrosive gases in the surrounding air.
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