Some standard content:
Ministry of Machinery and Electronics Industry of the People's Republic of China Standard JB4418-89
Shanghai Technical Supervision Information Research Office
Road No.
Flat Quick Connect Terminal
1989-01-26 Approved
Ministry of Machinery and Electronics Industry of the People's Republic of China 3
1989-07-01 Implementation
Flat Quick Connect Terminal of the Ministry of Machinery and Electronics Industry of the People's Republic of China
JB4413-89
This standard refers to the publication No. 760 of the International Electrotechnical Commission (IEC) "Flat Quick Connect Terminal" (1983 edition). Subject content and scope of application
This standard specifies the basic dimensions, technical requirements, test methods and inspection rules of fan-shaped quick connect terminals. This standard applies to fan-shaped quick connect terminals-without pre-insulated sockets and paired plugs with holes (pits). This standard does not apply to other types of quick connect terminals. Reference standards
GB2421
GB2423.23
Contact resistance test,
Basic environmental test procedures for electrical and electronic products General provisions Basic environmental test procedures for electrical and electronic products Test T: Soldering (including thermal shock from soldering) Basic test procedures and measurement methods for electromechanical components used in electronic equipment Part 2: General inspection, current continuity, insulation test and voltage strength test
Mechanical test on terminals
GB2829
GB2828
GB2900.18
JB3345
JB4261
3 Classification
3.1 Varieties and specifications
Basic test procedures and measurement methods for electromechanical components used in electronic equipment Part 3 : Current-carrying capacity test Basic test procedures and measurement methods for electromechanical components used in electronic equipment Part 7: Mechanical operation test and sealing Part 8: Connectors, contacts and their connections Basic test procedures and measurement methods for electromechanical components used in electronic equipment Periodic inspection Count sampling procedures and sampling tables Batch inspection Count sampling procedures and sampling tables Electrical terminology Low-voltage electrical appliances
Packaging, storage and transportation indications
General accessories for electric control equipment Product model compilation method Accessories for switchgear and control equipment Terms Flat quick-connect terminals are divided into four specifications of 2.8×0.5, 2.8×0.8, 4.8×0.8, and 6.3×0.8 according to the width and thickness of the plug. The rated cross-section and rated connection capacity of each specification are shown in Table 1. 3.2 Model
The model compilation method shall comply with the provisions of JB3345. 3.3 Marking
There should be clear and durable markings on the plug or socket. The contents of the mark are as follows: manufacturer name, code or trademark;
b. Necessary specification code.
3.4 Dimensions
The relevant dimensions of the plug or socket must be manufactured in accordance with the provisions of this standard. The dimensions of the plug and the positioning hole (pit) on the plug are shown in Figures 1 and 2 and Table 2 of JB4418-89 approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on January 26, 1989; the dimensions of the socket and the relevant parts of the plug are shown in Figure 3 and Table 3; the dimensions of the socket and the wire connection part are shown in Figure 4 and Table 4. Other dimensions are specified by the product standard. As long as the specified dimensions are not affected, the product shape is allowed to be different from the shape shown in this standard. Table 1
Plug specification
Width × original
2,9:×0,8
Rated micro-surface
Rated continuous pot capacity
Plug shape and size
Note: ①On the plug surface, except for the 1.3mm range around the positioning hole (pit, which allows unevenness of no more than 0.025mm, the rest of the surface should be smooth and free of burrs.
Dimension "B" is determined according to the application occasion. 0.076min
Positioning hole
Positioning pit
Positioning hole (pit) shape and size||tt| |:2.8×0.5
6.3.×0.8
Corresponding plug specificationsWww.bzxZ.net
:-0.3~0.6
.0.71.0
JB:·4418--8S
0.77~0.84
0.77~0.84
.4.7~4,9
Shape and size table of the relevant parts of the socket and the plug
Shape and size of the connection part between the socket and the wire Building 321---Standard Query Download Network
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Rated connection capacity
0.3~0.54)
0.5~1.01)
0,5~1.01)、3)
1.0~2.5+)
Rated connection capacity
0.3~0.51)
0.5~1,01)
0,5~1.02)、8)
1.0~2.53)
:,1,8~2.8
5,5~6,52)
Note: 1) Applicable to sockets with a width of 2.8mm; Applicable to sockets with a width of 4.8mm:
3) Applicable to sockets with a width of 6.3mm. 3.5 Material
B418—89
.3.3~4,3
4,0~5:0
2.9~3.92)
4;2~5.2*)
.\2.1~3,1
.2.5~3.5
3.5~*，5
\.4.0~5.0
1,3~2,.3)
2.0~3,03)
The recommended material for the insert is H68 yellow steel with a hardness of HR30T62±7. The insert sleeve is preferably made of the same material as the insert. Technical requirements
Flat quick-connect terminals should comply with the requirements of this standard and be manufactured according to drawings and documents approved by the prescribed procedures. 4.1 Appearance and dimensions
4.1.1 The surface of the flat quick-connect terminal should be free of cracks and burrs; its markings should be clear and durable. 4.1.2 The relevant dimensions of the flat quick-connect terminal should comply with the requirements of Article 3.4 of this standard and the product drawings. 4.2 Contact resistance
The contact resistance of the fan-shaped quick-connect terminal should not be greater than the limit value specified in Table 5. 4.3 Temperature rise
When the flat quick-connect terminal passes the specified test current, its temperature rise shall not exceed 30K. 4.4 Resistive electrical overload
The contact resistance of the flat quick-connect terminal measured by the test method specified in Article 5.3.5 shall not be greater than the limit value specified in Table 5, and the temperature rise shall not exceed 85K.
Insertion force and withdrawal force
The insertion force and withdrawal force of the fan-shaped quick-connect terminal shall comply with the provisions of Table 6. 4.6
Tensile strength (crimped part)
After the plug sleeve is crimped to the wire end core by crimping, its tensile strength shall not be less than the limit value specified in Table 7. Plug width
Surface coating
Measurement period
Wire cross section
Test sample
Yellow silk plug
Brass plug
Brass plug
Corrugated tin plug
Contact resistance
Plug width
5Test method
Tin-plated-saw
Silk-plated-yellow steel
First insertion force
Maximum value
JB.4418-89
Resource pot -Brass
Sawed-Plated Pot
Tinned-Yellow Steel
Yellow Steel-Brass
1st Pull-Out Force N
Maximum Value
Minimum Value
Tinned-Forged Tin
Ammonium Tin-Brass
Brass-Brass
6th Pull-Out Force
Minimum Value
Test Conditions
All tests must be carried out in normal test atmosphere conditions in accordance with the provisions of GB2421. Temperature rise, contact resistance,! 500
Minimum value
Resistive overload
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JB4418-89
The load test should be carried out when the air velocity is less than 10m/min. The ambient temperature and relative humidity during each measurement should be stated in the test report. 5.2 Test samples
5.2.1 The test samples shall be obtained from the manufacturer. The test samples shall not be cleaned or otherwise prepared before the test. 5.2.2 The crimping part of the socket and the end of the test wire shall be connected with a special main connector that meets the standard or is recommended by the terminal manufacturer. 5.2.3 All test samples shall be inspected for appearance and dimensions before the test. In each test, the number of sockets, the type of plugs used, and the length of the test wire used are specified in Table 8, and the shape and size of the double-ended plugs are shown in Figure 5. The test wire used shall be a copper core polyvinyl chloride insulated soft wire, and its cross-section shall be determined according to the socket specifications. Table
Each test sleeve
Insertion force and withdrawal force test
Tensile test
Contact resistance test
Temperature rise test
Resistive electric overload test
Double-ended plug
Double-ended plug,
Double-ended plug
Shape of double-ended plug
·Length
Note: The plug part dimensions of the double-ended plug are shown in Figures 1 and 2 and Table 2; its materials are shown in 3.5. 5.2.3.1 The middle section of the test wire with a length of 165 mm used in the contact resistance and resistive electric overload tests (see Figure 6) should be stripped of a 6 mm long insulation layer and sealed according to the provisions of GB2423.23. 5.2.3.2 During the temperature rise and resistive electric overload tests, a copper-constantan thermocouple with a wire diameter of 0.2 to 0.3 mm shall be installed on each socket at the position shown in Figure 6 by gluing or welding, and its 25 mm long section shall be fixed together with the test lead. m
Reference point
JB4418-89
Thermocouple placement position
Double-ended plug
Voltage transformer
Test point and thermocouple placement position
5.2.3.3 The contact resistance, temperature rise and resistive electric overload tests shall be arranged and wired as shown in Figure 7. 178
Power supply
Acid-formaldehyde waist pressure plate
5.3.Test method
5.3.1 Appearance inspection
Screw lamp M3×35
Double-end plug
Empty wire column
Voltage model
Test device and terminal
The appearance inspection shall be carried out in accordance with the provisions of GB5095.2 test 1a. The appearance quality and marking of the flat quick-connect terminal shall comply with the provisions of 4.1.1.
5.3.2 Dimension inspection
The dimension inspection shall be carried out in accordance with the provisions of GB5095.2 test 1b. The dimensions of the flat quick-connect terminal shall comply with the provisions of 4.1.2. 5.3.3 Contact resistance test
The contact resistance of each flat quick-connect terminal (including the plug-in part and the crimping part) shall be measured in accordance with GB5095.2 test 2b and the following provisions. The test current used for measurement shall be twice the current value specified in Table 9. The contact resistance measurement shall be carried out after the test sample reaches temperature stability (i.e. the difference in temperature rise measured every 30 minutes does not exceed 1K). During the measurement, the voltage drop from the reference point of each terminal to the stripped insulation part of the wire shall be measured, i.e., voltage measurement "A" as shown in Figure 6; at the same time, the voltage drop across the two ends of the 305mm long wire shall be measured, i.e., voltage measurement "B" as shown in Figure 7. The contact resistance of each terminal shall be calculated as follows: 7
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Wherein: Ua—-voltage drop of voltage measurement "A" part U-voltage drop of voltage measurement "B\" part; U——terminal voltage drop;
I-test current
R-terminal contact resistance.
After measurement, the calculated contact resistance value shall comply with the provisions of Article 4.2. U
5.3.4 Temperature rise test
The temperature rise test shall be carried out in accordance with the provisions of GB5095.3 test 5a. During the test, the test current shown in Table 9 shall pass through the test device, and after the temperature stabilizes, the temperature of the terminal and the ambient temperature shall be measured and recorded. The temperature rise of each terminal shall be calculated as follows: Where: T-
T, the temperature of one terminal;
T, the temperature of the terminal,
Ta-ambient temperature.
The calculation result shall comply with the provisions of Article 3.3.
5.3.5 Resistive electrical overload test
T=T,-T,
The prepared test sample shall be subjected to 500 cycles of operation assessment. Each cycle shall be powered on for 45 minutes and powered off for 15 minutes on the test device. The test current used during the test shall be twice the current value specified in Table 9. During the test, the following data shall be measured after 30 minutes of power on in the 25th cycle and the 500th cycle: Voltage drop U^ from the reference point of the double-ended plug to the stripped insulation part of the conductor (voltage measurement "A" shown in Figure 6); a.
b. Voltage drop Us at both ends of a 305mm long wire (voltage measurement "B\" shown in Figure 7); c. Temperature T of the terminal,
d. Ambient temperature Ta3
The contact resistance of each terminal is calculated according to the method specified in Article 5.3.3; the temperature rise is calculated according to the method specified in Article 5.3.4. The above measured and calculated results shall comply with the provisions of Article 4.4. Table
Plug width
Wire cross section
Test current
Note: 1) Applicable to untinned wire.
2 Applicable to tinned wire.
5.3.6 Test of insertion force and pull-out force
JB4418-83
The test of insertion force and pull-out force shall be in accordance with GB5095.7 test 13b. The test shall be carried out on new sockets and plugs that have not been tested in any way. Each pair of sockets and plugs shall be slowly and smoothly inserted and removed 6 times at a speed of about 25mm/min.
The insertion force and extraction force tests shall be carried out on any device that can be accurately adjusted and the readings can be maintained. The insertion force and extraction force of all test samples shall comply with the provisions of Article 4.5.
5.3.7 Tensile force (crimped part) test
The tensile force test shall be carried out in accordance with the provisions of GB5095.8 test 16d. The tensile force after the crimped part of each test sample is connected to the core of the test wire end (excluding the insulated part) shall comply with the provisions of Article 4.6. Inspection rules
Classification of inspection and testing|| tt||The inspection and testing of flat quick-connect terminals are divided into the following categories: type test;
b. Periodic test;
Factory inspection.
6.2 Type test
Type test is a test that must be carried out by new product development units or new trial production units. When changes in product design or manufacturing process may affect its working performance, the type test shall be carried out again. 6.2.1 Type test rules
The type test can only be considered qualified if all test items can be passed and all samples subjected to the test are qualified. 6.2.2 Type test items
The type test items are as follows:
Appearance inspection (5.3.1)
Dimension inspection (5.3.2)||t t||Contact resistance test (5.3.3)
Temperature rise test (5.3.4)
Resistive electrical overload test (5.3.5)
Insertion force and withdrawal force test (5.3.6)
Tensile strength test (5.3.7)
Type test procedure
Type test shall be carried out according to the following procedures: Appearance inspection
Dimension inspection
Contact resistance
Temperature rise test
Resistive electrical overload test
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Insertion force and withdrawal force
Tensile strength
6.3 Periodic test
JB4418-89
When the product type test is qualified and enters the stable production stage, a periodic test should be carried out to check the quality of the product. The periodic test is carried out every 3 years. The test samples used for periodic test should be drawn from the products that have passed the factory inspection. The periodic test is carried out in accordance with the provisions of GB2829, and a one-time sampling plan is adopted. The test items, judgments, etc. are shown in Table 10. If a certain test fails, the periodic test fails. Table 10
Test items
Contact resistance test
Temperature rise test
Insertion force and withdrawal force test
Tensile strength test
Factory inspection
Judgment level
Factory inspection should be carried out before the product leaves the factory, and it can only leave the factory after passing the inspection. RQL
Judgment array
Factory inspection is carried out in accordance with the provisions of GB2828. A single sampling plan is adopted, and the normal inspection sampling plan should be used at the beginning. The inspection items, judgments, etc. are shown in Table 11.
When it is judged as unqualified, it is allowed to be submitted again after screening, and the unqualified items are re-inspected according to the stricter sampling plan. If it is still unqualified, it will be considered unqualified and shall not be submitted again. Table 11
Inspection items
Appearance inspection
Dimension inspection
Marking, packaging, transportation, storage
7.1 Marking
The packaging box should have a mark that meets the corresponding transportation requirements specified in GB191. 7.3 Packaging
7.2.1 Packaging box
The finished product is packaged in a plastic bag or other similar materials, and the instruction manual and certificate of conformity should be placed in the cardboard box. The certificate of conformity should indicate: the name of the manufacturer, the terminal model mark and standard code, the name or code of the packaging personnel, and the packaging date or the stamp of the inspection department. 7.2.2 Packing box
The cardboard box containing the finished product should be placed in a dry wooden box, with moisture-proof paper padding inside the box and the gaps filled with tile paper or dry paper scraps. Put the packing list under the moisture-proof paper on the box cover, and indicate: the name of the manufacturer, trademark, terminal mark code, the number of boxes in the box and the total number of terminals, the name and code of the packing personnel, the packing date, the weight of the box and the stamp of the technical inspection department. 7.3 Transportation
Packaged products can be transported by any means of transportation if they can avoid the direct influence of rain and snow. 7.4 Storage
Packaged products should be stored in a warehouse where the surrounding air is free of corrosive gases such as alkali. 10
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