Some standard content:
JB/I 8139-1999
This standard is a revision of JB/T8139-1995 "Low Voltage Cables (Wires) for Highway Vehicles". This standard is equivalent to the International Organization for Standardization (ISO) standard ISO6722 (1985) "Low Voltage Cables for Highway Vehicles". Appendix A, Appendix B and Appendix C of this standard are all standard appendices. This standard replaces JB/T8139--1995 from the month of implementation. This standard is proposed and managed by the National Wire and Cable Standardization Promotion Technical Committee. The drafting units of this standard: Shanghai Cable Research Institute, Baicheng Automobile Wire Factory, etc. The main drafter of this standard: Zhang Dihua.
1 Scope
Machinery Industry Standard of the People's Republic of China
Road vehicles-Low voltage cables (wires)
Road vehicles-Low voltage cables (wires) JB/T 8139—1999
eqv ISO 6722:1985
Replaces JB/T8139--1995
This standard specifies the technical requirements, test methods, inspection rules, delivery length and packaging for low voltage cables (wires) for road vehicles. This standard is applicable to low voltage cables (wires) for road vehicles represented by automobiles. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2900.10—1984 Electrical terminology Wires and cables GB/T2951—1997 General test methods for insulation and sheath materials of cables GB/T 3048—1994 Test methods for electrical properties of wires and cables GB/T 3956—1997 Conductors of cables
G13/T69951986 Identification and marking methods for wires and cables JB/T8137—1999 Delivery trays of wires and cables 3 Terms, codes and product representation methods
3.1 Terms
The terms and definitions of this standard are explained in GB/T 2900.10. 3.1.1 Type test (symbol T)
Type test refers to the test conducted on a type of cable specified in this standard before delivery according to general commercial principles to prove that the cable has good performance and can meet the specified requirements. The essence of type test is that after these tests are conducted, they do not need to be repeated. If changing the cable material or process will affect its performance, it must be repeated. 3.1.2 Sampling test (symbol S)
Tests conducted on finished cable samples or taken from finished cable components to prove that the finished cable meets the design specifications. 3.2 Code
3.2.1 Classified by purpose (and series): Cables (wires) for road vehicles represented by automobiles 3.2.2 Classified by material characteristics:
Copper body
Insulation Polyvinyl chloride
Insulation Polyethylene·N-butylene composite
Expanded sheath Polyvinyl chloride
3.2.3 Classified by structure:
Soft structure
Approved by the State Machinery Industry Bureau on August 6, 1999 344
Implemented on January 1, 2000
3.2.4 Classified by heat resistance:
JB/T 8139—1999
3.3 Product representation method
Products are represented by model, specification and standard number. The color of the cable (wire) should be indicated after the specification if necessary. For example: a) Copper core PVC insulated low-voltage wire for road vehicles, single core 1.5mm, red is represented by: QVR1X1.5RJB/T 81391999
b) Copper core PVC-Ion-reinforced composite insulated low-voltage wire for road vehicles, single core 1.5mm2, red (primary color) and white (secondary color) two-color design:
QFR 1X1.5R-WJB/T 8139--1999
c) Copper core heat-resistant 105C PVC insulated low-voltage wire for road vehicles, single core 16mm, yellow is represented by: QVR-105 1X16YJB/T 8139-1999
d) Copper core PVC insulated PVC sheathed low-voltage cable for road vehicles, 1 core 2.5mm to 6 cores 1.5mm2 is expressed as QVVR1×2.5+6X1.5JB/T8139-19994 Model
Cable (wire) model shall be specified in Table 1.
QVR-105
5 Specification
Copper core PVC insulated low-voltage wire for road vehicles Copper core polyoxyethylene-butyl nitrile composite insulated low-voltage wire for road vehicles Copper core heat-resistant 105C sangqingyi ethylene insulated low-voltage wire for road vehicles Copper core polyoxyethylene insulated PVC sheathed low-voltage cable for road vehicles Cable (wire) specifications shall be specified in Table 2.
QVR,QFR,QVR-105
6 Technical requirements
6.1 Conductor
6.1.1 The conductor shall comply with the provisions of GB/T3956. 6.1.2 The copper single wire of the conductor can be tinned. 6.1.3 The conductor structure shall comply with the provisions of Table 3 and Table 4. Core
Main purpose
Electrical and instrument circuits in high temperature areas of vehicles
Electrical and instrument circuits in commercial temperature areas of vehicles
Electrical circuits in vehicles and trailers
Nominal cross section
1×2. 5+6×1. 5
Note: The number of single wires is allowed to be greater than the number listed in the table. The nominal diameter of the single wire is determined according to the nominal cross section and the corresponding number of wires. 345
Conductor nominal cross section
Number of strands/single
Nominal diameter
JB/ 8139—1999
Insulation nominal thickness
Cross section 0.2~.4mm2 Applicable only to special occasions in vehicles. 2 This table is applicable to QVR, QFR. and QVR-105 products. Table 4
Conductor nominal cross section
1×2. 5+6×1. 5
Number of strands/single
Nominal diameter
49/0.25+30/0.25
Note: This table is applicable to QVVR products.
6.2 Insulation
Average outer diameter upper limit
Insulation standard, insulation core twist
Donkey check nominal
Weight||Total calculated outer diameter
Conductor resistance at 20C is not greater than
Average outer diameter
Tin-plated core
Conductor reflow resistance at 20C is not greater than
Tin-plated lanthanum core
6.2.1 The insulation should be tightly wrapped on the conductor and should be easy to peel off without damaging the insulation, conductor or tin coating. The insulation surface is flat and the color is uniform.
6.2.2 The average insulation thickness should not be less than the nominal value specified in Table 3 and Table 4, and the thickness of the thinnest point should not be less than 90% of the nominal value-0.1mm.
Insulation thickness measurement should be taken at 3 locations at least 1m apart. A cable sample. For QVVR type cable, in addition to taking 2.5mm insulated cores from each section, 5 1.5mm2 insulated cores shall be randomly selected to check whether they meet the requirements. Take 3 sections of insulation samples from each insulated core and measure the average value of 18 values (expressed in mm). The average value shall be calculated to 2 decimal places and rounded off as follows. Then the value shall be taken as the average value of insulation thickness. When calculating, if the second decimal place is 5 or greater than 5, the first decimal place shall be rounded up by 1. For example, 1.74 shall be rounded off to 1.7. 1.75 shall be rounded off to 1.8. The minimum value of all measured values shall be taken as the minimum thickness of insulation at any location. 6.2.3 The insulated core shall be able to withstand the AC 50H2 spark test specified in GB/T3048.9 as an intermediate inspection. The spark test soap pressure shall comply with the provisions of Table 5.
Nominal insulation thickness
0.501.0
1.0≤1.5
6.2.4 Color marking of insulation core
JB/T 8139-1999
Test voltage (effective value)
6.2.4.1 Insulation cores shall be marked with color identification and shall comply with the provisions of GB/T6995.2 and GB/T6995.4. 6.2.4.2QVR, QFR and QVR-105 type wires are marked with single or double colors. a) The color and code of the single color mark shall be in accordance with the provisions of Table 6 and Table
b) The double color mark is composed of two colors, the primary color and the secondary color. The secondary color is three or more axial straight stripes, which are symmetrically distributed; the ratio of the width of the secondary color to the primary color is not greater than 2:18.
The color and code of the double color mark shall be in accordance with the provisions of Table 7. Table 7
Red (R)
Yellow (Y)
Blue (U)
Green (G)
Brown (N)
Purple (P)
Gray (S)
Note: "○\" in the table indicates that the main and auxiliary colors can be combined, and "\" indicates that the main and auxiliary color combination is not recommended. Color
6.2.4.3 The insulated core of QVVR type cable shall be marked with a single color. The color and arrangement of each insulated core are shown in Figure 1. Camp)
The nominal cross-section of the white insulated core is 2.5 mm, and the nominal cross-section of other insulated cores is 1.5 mm. Figure 1
6.3 Twisting
J3/T8139—1999
6.3. The insulated wires of 1QVVR type cable shall be twisted into a cable, the twisting direction shall be right-handed, and the twist pitch shall not be greater than 11 times the calculated twisted outer diameter.
6.3.2 After the insulated wire core is twisted, it is allowed to wrap a layer of tape made of non-absorbent material. 6.4 Sheath
6.4.1 The sheath shall be tightly wrapped on the conductor and shall be easy to peel off without damaging the insulation. The surface of the sheath shall be flat and the color shall be uniform. 6.4.2 The average thickness of the sheath shall not be less than that in Table 9 The specified nominal value, the thickness of the thinnest point should not be less than 85% of the nominal value - 0.1mm.
6.4.3 The sheath color should preferably be black or gray. 6.5 Finished cable (wire)
6.5.1 The outer diameter of the finished cable (wire) shall comply with the provisions of Table 3 and Table 4. On a cross section of the cable (wire), the difference (value) between the maximum outer diameter and the minimum outer diameter measured shall not exceed 15% of the upper limit of the specified average outer diameter. Measure two places and take the maximum difference. 6.5.2 The conductor of the finished cable (wire) shall comply with the provisions of Table 3 and Table 4. 6.5.3 The finished cable (wire) shall be subjected to insulation resistance test. 6.5.3.1 The insulation volume resistivity p of the insulated core of QVR, QFR and QVR-105 wires and QVVR cables at (70±2)C shall not be less than 10°0·cm,
The sample length during measurement is 5.5m, and the sample must be kept in 70±2 C water for 2 h after the measurement, the test of QVVR type cable should be carried out on each insulated core.
o,-2.725-
Where: o—insulation volume resistivity, 0·cm:L-
Test sample immersion length, cm;
D—wire outer diameter, cm;
—conductor outer diameter, cm;
R—insulation resistance test value, 2.
6.5.3.2 The insulation nominal thickness of 0.3mm wire shall be tested in accordance with Appendix A. 6.5.4 Finished cables (wires> shall be subjected to voltage test 6.5.4.1 QVR, QFR and QVR-105 type wires shall be subjected to 30 min power frequency AC voltage test and breakdown voltage test. QVVR type cables shall be subjected to 30 min power frequency AC voltage test, the test voltage is as shown in Table 8,
QVR.QFR.QVR-105
Test voltage
Breakdown voltage
6. 5. 4. 2 Insulation nominal thickness 0. 3 mm Wires are carried out according to Appendix B. Type
6.5.5 The insulation and sheath of cables (wires) shall be subjected to high temperature pressure test. The test temperature and continuous heating time of the sample shall be as specified in Table 9. The force F applied by the cutter on the sample shall be calculated according to the formula specified in GB/T2951.16 and 2951.17. The coefficient K is specified as 0.80, and the test result shall not be greater than 50% of the average thickness of the sample.
QVR.QFR,QVVR
QVR-105
JB/T 8139—1999
Test temperature
105±2
The cable (wire) shall be subjected to overheat test, and the test temperature shall be as specified in Table 10. Table 10
QVR.QFR.QVVR
QVR-105
Continuous heating time
Test temperature
105±2
150±2
6.5.7 The cable (wire) shall be subjected to insulation heat shrinkage test, and the test temperature shall be (150±2)°C, and the test time shall not be less than 15min. The shrinkage rate shall not exceed 4%.
6.5.8 Cables (wires) shall be subjected to a combustion test, the combustion time shall be 30s, and the flame shall be extinguished within 30 seconds after the flame is removed. 6.5.9 Cables (wires) shall be subjected to a low temperature flexibility test. 6.5.9.1 QVR, QFR and QVR-105 type wires and QVVR type cables with a nominal cross section of more than 16mm* shall be subjected to a low temperature winding test, and the test leakage shall be (-25±3)°C.
6.5.9.2 QVR, QFR and QVR-105 type wires with a nominal cross section of more than 16mm2 shall be subjected to a low temperature impact test, and the test temperature shall be -15-3)°C. The mass of the weight shall be selected according to the provisions of Table 11. Table 11
Nominal cutting
Weight weight
The number of specimens for the low temperature impact test is 10, and the length of the specimen is 150mm. The specimens are cut from the finished wires, and the distance between them shall be at least 1m.
Of the 10 specimens subjected to the impact test, at least 8 specimens shall have no cracks on their insulation: 6.5.10 The insulated cores of QVR, QFR and QVR-105 wires and QVVR cables with a nominal cross-section of less than 2.5 mm2 shall be subjected to an insulation adhesion test. The mass of the weight suspended on the conductor during the test shall be selected according to Table 12. The test of QVVR cables shall be carried out on each insulated core L-. Table 12
Nominal cross-section S
0. 5s<1. 0
1.04542. 5
Mass of weight
6.5.11 The insulated cores of QVR, QFR and QVR-105 wires and QVVR cables shall be subjected to an insulation stripping test. The test of QVVR cables shall be carried out on each insulated core. 349
6.5.12 Cables (wires) shall be subjected to oil resistance test. 6.5.13 Cables (wires) shall be subjected to fuel resistance test. JB/T 8139—1999
6.5.14 QVR, QFR and QVR-105 wires shall be subjected to insulation abrasion test. The quality of the insulation code and the minimum number of abrasions shall be determined by the manufacturer and the user in agreement. When the user does not make any requirements, the manufacturer shall conduct the abrasion test in accordance with the conditions specified in Table 13. The number of abrasions shall not be less than 1000 times. Table 13
Nominal cross section S
0. 2,0. 3.0. 4
1. 0,1. 5
2.5 and above
6.5.15 Marking
Brick code quality
6.5.15.1 The surface of QVR, QFR, QVR-105 type finished wires and QVVR type finished cables shall be marked with continuous markings of the manufacturer's name and model in a single color.
6.5.15.2 The marking of finished cables (wires) shall comply with the provisions of GB/T6995.4. 7 Test method
7.130min power frequency AC voltage test and breakdown voltage test7.1.1 Test equipment shall comply with GB/T3048.87.1.230min power frequency AC voltage test
Cut 3 samples of 1.2m in length from the finished wire. As shown in Figures 2 and 3, immerse the sample in sodium chloride solution (the weight ratio of water to sodium nitride is 100:3) at room temperature ((23±5)C, the same below), and the length of the two ends of the sample exposed to the liquid surface is 400mm. After 4h, apply the test voltage specified in Table 8 between the sample conductor and the solution. Continue for 30min, and none of the three samples should be broken down. Note: The order of voltage application for multi-core cables:
a) Blue, yellow, and green cores are connected to high voltage, and black, red, brown, and white cores are grounded. b) Black, red, and brown cores are connected to high voltage, and white, yellow, green, and white cores are grounded. c) Blue, black, yellow, red, brown, green and white cores are connected in parallel with high voltage, test voltage
150250
1-electrode: 2-glass blood: 3-sodium hydride solution Figure 2 Single core wire 30min power frequency AC voltage test 350
7.1.3 Breakdown voltage test
JB/T8139-1999
1—Glass III; 2—Sodium chloride solution: 3-Electrode Figure 3 30-minute power frequency AC voltage test for multi-core cables After the 30-minute power frequency AC voltage test, the voltage is raised to the breakdown voltage value specified in Table 8 at a voltage increase rate of 500V/s. None of the three samples should be broken down.
7.2 Overheating test
Three samples with a length of 500mm are cut from the finished wires. The samples are vertically hung in a natural ventilation oven at the temperature specified in Table 10 for 48 hours. The samples are taken out and the winding test is carried out according to the provisions of Appendix C after the samples are cooled to room temperature. After the winding test, the insulation or sheath of the three samples should not have cracks visible to normal vision. 7.3 Low temperature winding test
The test equipment should comply with the provisions of GB/T2951.4. Cut a 400mm long sample from the finished wire. The sample should be placed vertically in a low temperature box, with one end fixed on a rotatable test rod and the other end loaded. The sample should be kept in the low temperature box at the temperature specified in Article 6.5.9.1 for 4 hours (2 hours if the test equipment has been pre-cooled). After cooling for the specified time, the test rod should be rotated evenly at the specified speed in the low temperature box, and the sample should be wound on the test drop for at least 3 turns. The test drop diameter, load and winding speed are specified in Appendix C. Take out the test device and check the insulation of the single-core wire of the sample wound on the test drop with normal vision. There should be no cracks, and the cable core of the multi-core cable should not protrude from the sheath to damage the sheath. 7.4 Insulation Adhesion Test
The insulation adhesion test should be carried out at room temperature. Cut a sample of 150 mm in length from the finished wire, strip off at least 100 mm of insulation at one end of the sample, insert the sample conductor into the hole of a horizontally placed steel plate, the diameter of the hole is slightly larger than the diameter of the conductor, and then hang a heavy hammer specified in Table 12 on the sample conductor for 308 seconds.
Inspect the sample, the conductor should not come out of the insulation. 7.5 Insulation stripping test
The sample should be carried out at room temperature.
At one end of the sample, it should be possible to cleanly strip off at least 20 mm of insulation without difficulty. 7.6 Oil resistance test
7.6.1 The test oil shall meet the following requirements; aniline point
(124±1)C;
kinematic viscosity 19×10-m/s~21×10-m\/s; flash point
7. 6.2 Take a sample of 500 mm in length from the finished wire and immerse it in the test oil. The two ends of the sample are exposed to the oil surface by about 50 mm. The oil temperature is (90±2)C, and the temperature of the oil in the container should be uniform. JB/T81391999
After immersing in oil for 48 hours, take out the sample, wipe the surface clean, and cool to room temperature. Then carry out the winding test according to the provisions of Appendix C. After the test, the insulation should not have cracks and tears visible to normal vision, and the insulation color should still be recognizable: the change rate of the sheath thickness should not be greater than 1%, and the sheath color should still be recognizable. 7.7 Fuel resistance test
7.7.1 Composition of the fuel liquid used for the test:
2,2,4-trimethylpiperazine 50% (volume ratio) Toluene
50% (volume ratio)
7.7.2 Cut a sample of 500mm in length from the finished wire and immerse it in the fuel liquid at room temperature, with both ends of the test sticking out of the liquid surface by about 100mm.
After the sample is immersed in the liquid for 30 minutes, take it out. The sample is dried for about 30 minutes at room temperature, and then the winding test is carried out according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable; the change rate of the sheath thickness should not be greater than 6%, and the sheath color change should still be recognizable. 7.8 Insulation scrape test
7.8.1 The scrape test equipment is shown in Figure 4. The scraping test machine should be able to ensure that the scraper scrapes the surface of the insulation at a frequency of 50 to 60 times per minute along the axis of the sample. The scraping length should not be less than 10mm, and it should have a counter that automatically records the number of scraping times. When the scraper breaks the insulation and contacts the conductor, it should be able to stop scraping.
1 Reciprocating drive device; 2-magnetic code; 3-scraping: 4--pressing piece; 5-sample; 6-iron station Figure 4
7.8.2 The test should be carried out at room temperature.
Take a sample with a length of 750mm from the finished wire, fix the sample on the test device as shown in Figure 4, and apply a code of specified mass on the scraper.
After testing one point, move the sample forward 100mm1m and rotate 90° in the fixed direction. A total of 5 points are tested. The test result is the average of the 5 test values. 8 Inspection rules
8.1 Products can only be shipped after passing the inspection of the manufacturer. The products leaving the factory shall be accompanied by the manufacturer's product quality inspection certificate. 8.2 The products shall be inspected according to the provisions of Table 14. 8.3 The number of samples for each batch shall be agreed upon by both parties. If the user does not make any requirements, it shall be determined by the manufacturer. 352
JB/T 8139—1999
When the test results of the shaft sample inspection items are unqualified, double sampling shall be carried out for the second test. If it is still unqualified, 1C0 shall be tested again. 8.4 Product appearance application (test) Normal vision inspection piece by piece. Table 14
Structure and insulation test
Conductor structure
Insulation purity
Shield thickness
Conductor resistance test
Insulation resistance test
30min power frequency AC voltage test
and breakdown voltage test
Insulation and insulation high temperature test
! Overheat test
Heat shrinkage test
Burning test
Low temperature winding test
Low temperature impact test
Insulation adhesion test
Insulation residual test
Oil resistance test
Fuel resistance test
Insulation scrape test
: Identification mark
Insulation core color mark
Finished cable mark
Article number
Inspection regulations
QVR.QFR.QVR-115
Note: S: Indicates periodic test, at least once every six months. 9 Delivery length
Test methods
GR/T 2009, 2
GB/T 2951. 2
GB/T 2951. 3
GB7r 2951.4
GB/T 304B.4
GB/13048.4-3348.6 and Appendix A
GB/13048.8, 7.1 and Appendix B
GB/T 2951. 16 and 17
GB/T 2931. 33
GB/T 2951. 19
GB/T 2931.12 and 7.3
GB/T 2951. 14
GB/T 6955
GR/T 6095
9.1 The delivery length of cables (wires) with fixed length requirements shall be as agreed upon by both parties. 9.2 In the absence of an agreement, the length shall be as specified in Table 15, and the length of the short segment shall not exceed 10% of the total length of the delivery. 9.3 The number of cables (wires) in each packaging unit shall not exceed 5 segments. 9.4 The length measurement error shall not exceed 0.5%. Table 15
Length not less than hand
QVR105
QVR-105
0. 2 mm2~-2.5 mm2
4 mm~120 mm2
1×2.5 mm+6×1. 5 mm
10 packaging
JB/T 8139—1999
10.1 The coiled or rolled wires should be neatly wound and properly packed. 10.2 Each coil or roll should be labeled and marked with: a) Manufacturer name:
b) Wire model and specification (conductor structure), Im2; c) Length: m and number of sections;
d) Mass, kg
e) Manufacturing date: year, month;
f) Standard number or certification mark.
10.3 When packing, the box shell should be marked with: a) Manufacturer name;
b) Product model and specification, mm:
c) Product certification mark;
d) Box size and mass, mm×mm×mm.kg: e) Moisture-proof and anti-throw mark.2 Overheat test
Three samples with a length of 500mm are cut from the finished wire, and the samples are vertically hung in a natural ventilation oven at the temperature specified in Table 10 for 48 hours. The samples are taken out and the winding test is carried out according to the provisions of Appendix C after the samples are cooled to room temperature. After the winding test, the insulation or sheath of the three samples should not have cracks visible to normal vision. 7.3 Low temperature winding test
The test equipment should comply with the provisions of GB/T2951.4. One sample with a length of 400mm is cut from the finished wire. The sample should be placed vertically in a low temperature box, one end of which is fixed on a rotatable test rod, and a load is applied to the other end. The sample is kept in a low temperature box at the temperature specified in Article 6.5.9.1 for 4 hours (if the test equipment has been pre-cooled, it is 2 hours). After cooling for the specified time, the test rod is evenly rotated at the specified speed in the low temperature box, and the sample is wound on the test drop at least 3 times. The test drop diameter, load and winding speed are specified in Appendix C. Take out the test device and check with normal vision that the insulation of the single-core wire of the sample wound on the test drop should not have cracks, and the cable core of the multi-core cable should not protrude from the sheath to damage the sheath. 7.4 Insulation Adhesion Test
The insulation adhesion test should be carried out at room temperature. Cut a sample with a length of 150mm from the finished wire, strip off at least 100mm of insulation at one end of the sample, insert the sample conductor into the hole of the horizontally placed steel plate, the diameter of the hole is slightly larger than the diameter of the conductor, and then hang the heavy hammer specified in Table 12 on the sample conductor for 308.
Check the sample, the conductor should not fall out of the insulation. 7.5 Insulation Stripping Test
The sample should be carried out at room temperature.
At one end of the sample, it should be possible to cleanly strip off the insulation of at least 20mm without difficulty. 7.6 Oil resistance test
7.6.1 The test oil shall meet the following requirements; aniline point
(124±1)C;
kinematic viscosity 19×10-m/s~21×10-m\/s; flash point
7. 6.2 Take a sample of 500 mm in length from the finished wire and immerse it in the test oil. The two ends of the sample are exposed to the oil surface by about 50 mm. The oil temperature is (90±2)C, and the temperature of the oil in the container should be uniform. JB/T81391999
After immersion in oil for 48 hours, take out the sample, wipe the surface clean, and cool to room temperature. Then carry out the winding test according to the provisions of Appendix C. After the test, the insulation should not have cracks and tears visible to normal vision, and the insulation color should still be recognizable: the change rate of the sheath thickness should not be greater than 1%, and the sheath color should still be recognizable. 7.7 Fuel resistance test
7.7.1 Composition of the fuel liquid used for the test:
2,2,4-trimethylpiperazine 50% (volume ratio) Toluene
50% (volume ratio)
7.7.2 Cut a sample of 500mm in length from the finished wire and immerse it in the fuel liquid at room temperature, with both ends of the test sticking out of the liquid surface by about 100mm.
After the sample is immersed in the liquid for 30 minutes, take it out. The sample is dried for about 30 minutes at room temperature, and then the winding test is carried out according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable; the change rate of the sheath thickness should not be greater than 6%, and the sheath color change should still be recognizable. 7.8 Insulation scrape test
7.8.1 The scrape test equipment is shown in Figure 4. The scraping test machine should be able to ensure that the scraper scrapes the surface of the insulation at a frequency of 50 to 60 times per minute along the axis of the sample. The scraping length should not be less than 10mm, and it should have a counter that automatically records the number of scraping times. When the scraper breaks the insulation and contacts the conductor, it should be able to stop scraping.
1 Reciprocating drive device; 2-magnetic code; 3-scraping: 4--pressing piece; 5-sample; 6-iron station Figure 4
7.8.2 The test should be carried out at room temperature.
Take a sample with a length of 750mm from the finished wire, fix the sample on the test device as shown in Figure 4, and apply a code of specified mass on the scraper.
After testing one point, move the sample forward 100mm1m and rotate 90° in the fixed direction. A total of 5 points are tested. The test result is the average of the 5 test values. 8 Inspection rules
8.1 Products can only be shipped after passing the inspection of the manufacturer. The products leaving the factory shall be accompanied by the manufacturer's product quality inspection certificate. 8.2 The products shall be inspected according to the provisions of Table 14. 8.3 The number of samples for each batch shall be agreed upon by both parties. If the user does not make any requirements, it shall be determined by the manufacturer. 352
JB/T 8139—1999
When the test results of the shaft sample inspection items are unqualified, double sampling shall be carried out for the second test. If it is still unqualified, 1C0 shall be tested again. 8.4 Product appearance application (test) Normal vision inspection piece by piece. Table 14
Structure and insulation test
Conductor structure
Insulation purity
Shielding thickness
Conductor resistance test
Insulation resistance test
30min power frequency AC voltage test
and breakdown voltage test
Insulation and insulation high temperature test
! Overheat test
Heat shrinkage test
Burning test
Low temperature winding test
Low temperature impact test
Insulation adhesion test
Insulation residual test
Oil resistance test
Fuel resistance test
Insulation scrape test
: Identification mark
Insulation core color mark
Finished cable mark
Article number
Inspection regulations
QVR.QFR.QVR-115
Note: S: Indicates periodic test, at least once every six months. 9 Delivery length
Test methods
GR/T 2009, 2
GB/T 2951. 2
GB/T 2951. 3
GB7r 2951.4
GB/T 304B.4
GB/13048.4-3348.6 and Appendix A
GB/13048.8, 7.1 and Appendix B
GB/T 2951. 16 and 17
GB/T 2931. 33
GB/T 2951. 19
GB/T 2931.12 and 7.3
GB/T 2951. 14
GB/T 6955
GR/T 6095
9.1 The delivery length of cables (wires) with fixed length requirements shall be as agreed upon by both parties. 9.2 In the absence of an agreement, the length shall be as specified in Table 15, and the length of the short section shall not exceed 10% of the total length of the delivery. 9.3 The number of cables (wires) in each packaging unit shall not exceed 5 sections. 9.4 The length measurement error shall not exceed 0.5%. Table 15
Length not less than hand
QVR105
QVR-105
0. 2 mm2~-2.5 mm2
4 mm~120 mm2
1×2.5 mm+6×1. 5 mm
10 packaging
JB/T 8139—1999
10.1 The coiled or rolled wires should be neatly wound and properly packed. 10.2 Each coil or roll should be labeled and marked with: a) Manufacturer name:
b) Wire model and specification (conductor structure), Im2; c) Length: m and number of sections;
d) Mass, kg
e) Manufacturing date: year, month;
f) Standard number or certification mark.
10.3 When packing, the outer shell of the box should be marked with: a) Manufacturer name;
b) Product model and specification, mm:
c) Product certification mark;
d) Box size and mass, mm×mm×mm.kg: e) Moisture-proof and anti-throw mark.2 Overheat test
Three samples with a length of 500mm are cut from the finished wire, and the samples are vertically hung in a natural ventilation oven at the temperature specified in Table 10 for 48 hours. The samples are taken out and the winding test is carried out according to the provisions of Appendix C after the samples are cooled to room temperature. After the winding test, the insulation or sheath of the three samples should not have cracks visible to normal vision. 7.3 Low temperature winding test
The test equipment should comply with the provisions of GB/T2951.4. One sample with a length of 400mm is cut from the finished wire. The sample should be placed vertically in a low temperature box, one end of which is fixed on a rotatable test rod, and a load is applied to the other end. The sample is kept in a low temperature box at the temperature specified in Article 6.5.9.1 for 4 hours (if the test equipment has been pre-cooled, it is 2 hours). After cooling for the specified time, the test rod is evenly rotated at the specified speed in the low temperature box, and the sample is wound on the test drop at least 3 times. The test drop diameter, load and winding speed are specified in Appendix C. Take out the test device and check with normal vision that the insulation of the single-core wire of the sample wound on the test drop should not have cracks, and the cable core of the multi-core cable should not protrude from the sheath to damage the sheath. 7.4 Insulation Adhesion Test
The insulation adhesion test should be carried out at room temperature. Cut a sample with a length of 150mm from the finished wire, strip off at least 100mm of insulation at one end of the sample, insert the sample conductor into the hole of the horizontally placed steel plate, the diameter of the hole is slightly larger than the diameter of the conductor, and then hang the heavy hammer specified in Table 12 on the sample conductor for 308.
Check the sample, the conductor should not fall out of the insulation. 7.5 Insulation Stripping Test
The sample should be carried out at room temperature.
At one end of the sample, it should be possible to cleanly strip off the insulation of at least 20mm without difficulty. 7.6 Oil resistance test
7.6.1 The test oil shall meet the following requirements; aniline point
(124±1)C;
kinematic viscosity 19×10-m/s~21×10-m\/s; flash point
7. 6.2 Take a sample of 500 mm in length from the finished wire and immerse it in the test oil. The two ends of the sample are exposed to the oil surface by about 50 mm. The oil temperature is (90±2)C, and the temperature of the oil in the container should be uniform. JB/T81391999
After immersion in oil for 48 hours, take out the sample, wipe the surface clean, and cool to room temperature. Then carry out the winding test according to the provisions of Appendix C. After the test, the insulation should not have cracks and tears visible to normal vision, and the insulation color should still be recognizable: the change rate of the sheath thickness should not be greater than 1%, and the sheath color should still be recognizable. 7.7 Fuel resistance test
7.7.1 Composition of the fuel liquid used for the test:
2,2,4-trimethylpiperazine 50% (volume ratio) Toluene
50% (volume ratio)
7.7.2 Cut a sample of 500mm in length from the finished wire and immerse it in the fuel liquid at room temperature, with both ends of the test sticking out of the liquid surface by about 100mm.
After the sample is immersed in the liquid for 30 minutes, take it out. The sample is dried for about 30 minutes at room temperature, and then the winding test is carried out according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable; the change rate of the sheath thickness should not be greater than 6%, and the sheath color change should still be recognizable. 7.8 Insulation scrape test
7.8.1 The scrape test equipment is shown in Figure 4. The scraping test machine should be able to ensure that the scraper scrapes the surface of the insulation at a frequency of 50 to 60 times per minute along the axis of the sample. The scraping length should not be less than 10mm, and it should have a counter that automatically records the number of scraping times. When the scraper breaks the insulation and contacts the conductor, it should be able to stop scraping.
1 Reciprocating drive device; 2-magnetic code; 3-scraping: 4--pressing piece; 5-sample; 6-iron station Figure 4
7.8.2 The test should be carried out at room temperature.
Take a sample with a length of 750mm from the finished wire, fix the sample on the test device as shown in Figure 4, and apply a code of specified mass on the scraper.
After testing one point, move the sample forward 100mm1m and rotate 90° in the fixed direction. A total of 5 points are tested. The test result is the average of the 5 test values. 8 Inspection rules
8.1 Products can only be shipped after passing the inspection of the manufacturer. The products leaving the factory shall be accompanied by the manufacturer's product quality inspection certificate. 8.2 The products shall be inspected according to the provisions of Table 14. 8.3 The number of samples for each batch shall be agreed upon by both parties. If the user does not make any requirements, it shall be determined by the manufacturer. 352
JB/T 8139—1999
When the test results of the shaft sample inspection items are unqualified, double sampling shall be carried out for the second test. If it is still unqualified, 1C0 shall be tested again. 8.4 Product appearance application (test) Normal vision inspection piece by piece. Table 14
Structure and insulation test
Conductor structure
Insulation purity
Shield thickness
Conductor resistance test
Insulation resistance test
30min power frequency AC voltage test
and breakdown voltage test
Insulation and insulation high temperature test
! Overheat test
Heat shrinkage test
Burning test
Low temperature winding test
Low temperature impact test
Insulation adhesion test
Insulation residual test
Oil resistance test
Fuel resistance test
Insulation scrape test
: Identification mark
Insulation core color mark
Finished cable mark
Article number
Inspection regulations
QVR.QFR.QVR-115
Note: S: Indicates periodic test, at least once every six months. 9 Delivery length
Test methods
GR/T 2009, 2
GB/T 2951. 2
GB/T 2951. 3
GB7r 2951.4
GB/T 304B.4
GB/13048.4-3348.6 and Appendix A
GB/13048.8, 7.1 and Appendix B
GB/T 2951. 16 and 17
GB/T 2931. 33
GB/T 2951. 19
GB/T 2931.12 and 7.3
GB/T 2951. 14
GB/T 6955
GR/T 6095
9.1 The delivery length of cables (wires) with fixed length requirements shall be as agreed upon by both parties. 9.2 In the absence of an agreement, the length shall be as specified in Table 15, and the length of the short section shall not exceed 10% of the total length of the delivery. 9.3 The number of cables (wires) in each packaging unit shall not exceed 5 sections. 9.4 The length measurement error shall not exceed 0.5%. Table 15
Length not less than hand
QVR105
QVR-105
0. 2 mm2~-2.5 mm2
4 mm~120 mm2
1×2.5 mm+6×1. 5 mm
10 packaging
JB/T 8139—1999
10.1 The coiled or rolled wires should be neatly wound and properly packed. 10.2 Each coil or roll should be labeled and marked with: a) Manufacturer name:
b) Wire model and specification (conductor structure), Im2; c) Length: m and number of sections;
d) Mass, kg
e) Manufacturing date: year, month;
f) Standard number or certification mark.
10.3 When packing, the outer shell of the box should be marked with: a) Manufacturer name;
b) Product model and specification, mm:
c) Product certification mark;
d) Box size and mass, mm×mm×mm.kg: e) Moisture-proof and anti-throw mark.1. Keep the test rod in a low temperature box at a specified temperature for 4 hours (if the test equipment has been pre-cooled, it should be 2 hours). After cooling for the specified time, rotate the test rod evenly at the specified speed in the low temperature box, and the sample should be wound on the test drop for at least 3 turns. The test drop diameter, load and winding speed are specified in Appendix C. Take out the test device and use normal vision to check the insulation of the single-core wire of the sample wound on the test drop. There should be no cracks, and the cable core of the multi-core cable should not protrude from the sheath to damage the sheath. 7.4 Insulation Adhesion Test
The insulation adhesion test should be carried out at room temperature. Cut a sample with a length of 150mm from the finished wire, strip at least 100mm of insulation at one end of the sample, insert the sample conductor into the hole of the horizontally placed steel plate, the diameter of the hole is slightly larger than the diameter of the conductor, and then hang the heavy hammer specified in Table 12 on the sample conductor for 308.
Check the sample, the conductor should not fall out of the insulation. 7.5 Insulation Stripping Test
The sample should be carried out at room temperature.
At one end of the sample, it should be possible to cleanly strip off the insulation of at least 20 mm in length without difficulty. 7.6 Oil resistance test
7.6.1 The test oil should meet the following requirements; aniline point
(124±I)C;
kinematic viscosity 19×10-m/s~21×10-m\/s; flash point
7. 6.2 Take a sample of 500 mm in length from the finished wire and immerse it in the test oil, with about 50 mm exposed from the oil surface at both ends of the sample. The oil temperature is (90±2)C, and the temperature of the oil in the container should be uniform. JB/T81391999
After immersing in oil for 48 hours, take out the sample, wipe the surface clean, and cool it to room temperature. Then carry out the winding test according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable: the change rate of sheath thickness should not be greater than 1%, and the sheath color should still be recognizable. 7.7 Fuel resistance test
7.7.1 Composition of the fuel liquid used for the test:
2,2,4-trimethylpiperazine 50% (volume ratio) Toluene
50% volume ratio)
7.7.2 Take a sample of 500mm in length from the finished wire and immerse it in the fuel liquid at room temperature, with both ends of the test sticking out of the liquid surface for about 100mm.
After the sample is immersed in the liquid for 30 minutes, take out the sample. Dry the sample at room temperature for about 30 minutes, and then perform the winding test according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable; the change rate of sheath thickness should not be greater than 6%, and the sheath color should still be recognizable. 7.8 Insulation scraping test
7.8.1 The scraping test equipment is shown in Figure 4. The scraping test machine should be able to ensure that the scraper scrapes the surface of the insulation along the axis of the sample at a frequency of 50 to 60 times per minute. The scraping length should not be less than 10mm, and it should have a counter that automatically records the number of scraping times. When the scraper breaks the insulation and contacts the conductor, it should be able to stop scraping. Reciprocating
1 Reciprocating drive device; 2-magnetic code; 3-scraping: 4--pressing piece; 5-sample; 6-iron station Figure 4
7.8.2 The test should be carried out at room temperature.
Take a sample with a length of 750mm from the finished wire, fix the sample on the test device as shown in Figure 4, and apply a code of specified mass on the scraper.
After testing one point, move the sample forward 100mm and rotate 90° in the fixed direction. A total of 5 points are tested. The test result is the average of the 5-point test values. 8 Inspection rules
8.1 Products can only leave the factory after passing the inspection of the manufacturer. The products leaving the factory should be accompanied by the manufacturer's product quality inspection certificate. 8.2 Products should be inspected according to the provisions of Table 14. 8.3 The number of samples for each batch shall be stipulated by the agreement of both parties. If the user does not make any requirements, it shall be stipulated by the manufacturer. 352
JB/T 8139—1999
When the test results of the axis sample inspection items are unqualified, double sampling should be carried out for the second test. If it is still unqualified, it should be tested for 1C0. 8.4 Product appearance application (test) Normal vision inspection piece by piece. Table 14
Structure and insulation test technology
Conductor structure
Insulation purity
Guard thickness
Conductor resistance test
Insulation resistance test
30min power frequency AC voltage test
and breakdown voltage test
Insulation and insulation high temperature test
! Overheat test
Heat shrinkage test
Burning test
Low temperature winding testbzxZ.net
Low temperature impact test
Insulation adhesion test
Insulation residual test
Oil resistance test
Fuel resistance test
Insulation scrape test
: Identification mark
Insulation core color mark
Finished cable mark
Article number
Inspection regulations
QVR.QFR.QVR-115
Note: S: Indicates periodic test, at least once every six months. 9 Delivery length
Test methods
GR/T 2009, 2
GB/T 2951. 2
GB/T 2951. 3
GB7r 2951.4
GB/T 304B.4
GB/13048.4-3348.6 and Appendix A
GB/13048.8, 7.1 and Appendix B
GB/T 2951. 16 and 17
GB/T 2931. 33
GB/T 2951. 19
GB/T 2931.12 and 7.3
GB/T 2951. 14
GB/T 6955
GR/T 6095
9.1 The delivery length of cables (wires) with fixed length requirements shall be as agreed upon by both parties. 9.2 In the absence of an agreement, the length shall be as specified in Table 15, and the length of the short section shall not exceed 10% of the total length of the delivery. 9.3 The number of cables (wires) in each packaging unit shall not exceed 5 sections. 9.4 The length measurement error shall not exceed 0.5%. Table 15
Length not less than hand
QVR105
QVR-105
0. 2 mm2~-2.5 mm2
4 mm~120 mm2
1×2.5 mm+6×1. 5 mm
10 packaging
JB/T 8139—1999
10.1 The coiled or rolled wires should be neatly wound and properly packed. 10.2 Each coil or roll should be labeled and marked with: a) Manufacturer name:
b) Wire model and specification (conductor structure), Im2; c) Length: m and number of sections;
d) Mass, kg
e) Manufacturing date: year, month;
f) Standard number or certification mark.
10.3 When packing, the outer shell of the box should be marked with: a) Manufacturer name;
b) Product model and specification, mm:
c) Product certification mark;
d) Box size and mass, mm×mm×mm.kg: e) Moisture-proof and anti-throw mark.1. Keep the test rod in a low temperature box at a specified temperature for 4 hours (if the test equipment has been pre-cooled, it should be 2 hours). After cooling for the specified time, rotate the test rod evenly at the specified speed in the low temperature box, and the sample should be wound on the test drop for at least 3 turns. The test drop diameter, load and winding speed are specified in Appendix C. Take out the test device and use normal vision to check the insulation of the single-core wire of the sample wound on the test drop. There should be no cracks, and the cable core of the multi-core cable should not protrude from the sheath to damage the sheath. 7.4 Insulation Adhesion Test
The insulation adhesion test should be carried out at room temperature. Cut a sample with a length of 150mm from the finished wire, strip at least 100mm of insulation at one end of the sample, insert the sample conductor into the hole of the horizontally placed steel plate, the diameter of the hole is slightly larger than the diameter of the conductor, and then hang the heavy hammer specified in Table 12 on the sample conductor for 308.
Check the sample, the conductor should not fall out of the insulation. 7.5 Insulation Stripping Test
The sample should be carried out at room temperature.
At one end of the sample, it should be possible to cleanly strip off the insulation of at least 20 mm in length without difficulty. 7.6 Oil resistance test
7.6.1 The test oil should meet the following requirements; aniline point
(124±I)C;
kinematic viscosity 19×10-m/s~21×10-m\/s; flash point
7. 6.2 Take a sample of 500 mm in length from the finished wire and immerse it in the test oil, with about 50 mm exposed from the oil surface at both ends of the sample. The oil temperature is (90±2)C, and the temperature of the oil in the container should be uniform. JB/T81391999
After immersing in oil for 48 hours, take out the sample, wipe the surface clean, and cool it to room temperature. Then carry out the winding test according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable: the change rate of sheath thickness should not be greater than 1%, and the sheath color should still be recognizable. 7.7 Fuel resistance test
7.7.1 Composition of the fuel liquid used for the test:
2,2,4-trimethylpiperazine 50% (volume ratio) Toluene
50% volume ratio)
7.7.2 Take a sample of 500mm in length from the finished wire and immerse it in the fuel liquid at room temperature, with both ends of the test sticking out of the liquid surface for about 100mm.
After the sample is immersed in the liquid for 30 minutes, take out the sample. Dry the sample at room temperature for about 30 minutes, and then perform the winding test according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable; the change rate of sheath thickness should not be greater than 6%, and the sheath color should still be recognizable. 7.8 Insulation scraping test
7.8.1 The scraping test equipment is shown in Figure 4. The scraping test machine should be able to ensure that the scraper scrapes the surface of the insulation along the axis of the sample at a frequency of 50 to 60 times per minute. The scraping length should not be less than 10mm, and it should have a counter that automatically records the number of scraping times. When the scraper breaks the insulation and contacts the conductor, it should be able to stop scraping. Reciprocating
1 Reciprocating drive device; 2-magnetic code; 3-scraping: 4--pressing piece; 5-sample; 6-iron station Figure 4
7.8.2 The test should be carried out at room temperature.
Take a sample with a length of 750mm from the finished wire, fix the sample on the test device as shown in Figure 4, and apply a code of specified mass on the scraper.
After testing one point, move the sample forward 100mm and rotate 90° in the fixed direction. A total of 5 points are tested. The test result is the average of the 5-point test values. 8 Inspection rules
8.1 Products can only leave the factory after passing the inspection of the manufacturer. The products leaving the factory should be accompanied by the manufacturer's product quality inspection certificate. 8.2 Products should be inspected according to the provisions of Table 14. 8.3 The number of samples for each batch shall be stipulated by the agreement of both parties. If the user does not make any requirements, it shall be stipulated by the manufacturer. 352
JB/T 8139—1999
When the test results of the axis sample inspection item are unqualified, double sampling should be carried out for the second test. If it is still unqualified, it should be tested for 1C0. 8.4 Product appearance application (test) Normal vision inspection piece by piece. Table 14
Structure and insulation test technology
Conductor structure
Insulation purity
Guard thickness
Conductor resistance test
Insulation resistance test
30min power frequency AC voltage test
and breakdown voltage test
Insulation and insulation high temperature test
! Overheat test
Heat shrinkage test
Burning test
Low temperature winding test
Low temperature impact test
Insulation adhesion test
Insulation residual test
Oil resistance test
Fuel resistance test
Insulation scrape test
: Identification mark
Insulation core color mark
Finished cable mark
Article number
Inspection regulations
QVR.QFR.QVR-115
Note: S: Indicates periodic test, at least once every six months. 9 Delivery length
Test methods
GR/T 2009, 2
GB/T 2951. 2
GB/T 2951. 3
GB7r 2951.4
GB/T 304B.4
GB/13048.4-3348.6 and Appendix A
GB/13048.8, 7.1 and Appendix B
GB/T 2951. 16 and 17
GB/T 2931. 33
GB/T 2951. 19
GB/T 2931.12 and 7.3
GB/T 2951. 14
GB/T 6955
GR/T 6095
9.1 The delivery length of cables (wires) with fixed length requirements shall be as agreed upon by both parties. 9.2 In the absence of an agreement, the length shall be as specified in Table 15, and the length of the short segment shall not exceed 10% of the total length of the delivery. 9.3 The number of cables (wires) in each packaging unit shall not exceed 5 segments. 9.4 The length measurement error shall not exceed 0.5%. Table 15
Length not less than hand
QVR105
QVR-105
0. 2 mm2~-2.5 mm2
4 mm~120 mm2
1×2.5 mm+6×1. 5 mm
10 packaging
JB/T 8139—1999
10.1 The coiled or rolled wires should be neatly wound and properly packed. 10.2 Each coil or roll should be labeled and marked with: a) Manufacturer name:
b) Wire model and specification (conductor structure), Im2; c) Length: m and number of sections;
d) Mass, kg
e) Manufacturing date: year, month;
f) Standard number or certification mark.
10.3 When packing, the outer shell of the box should be marked with: a) Manufacturer name;
b) Product model and specification, mm:
c) Product certification mark;
d) Box size and mass, mm×mm×mm.kg: e) Moisture-proof and anti-throw mark.The two ends of the sample are exposed to the oil surface by about 50 mm. The oil temperature is (90 ± 2) °C, and the temperature of the oil in the container should be uniform. JB/T81391999 After immersion in oil for 48 hours, take out the sample, wipe the surface clean, and cool it to room temperature. Then carry out the winding test according to the provisions of Appendix C. After the test, the insulation should not have cracks and tears visible to normal vision, and the insulation color should still be recognizable: the change rate of the sheath thickness should not be greater than 1%, and the sheath color should still be recognizable. 7.7 Fuel resistance test
7.7.1 Composition of the fuel liquid used for the test:
2,2,4-trimethylpiperazine 50% (volume ratio) Toluene
50% (volume ratio)
7.7.2 Cut a sample of 500mm in length from the finished wire and immerse it in the fuel liquid at room temperature, with both ends of the test sticking out of the liquid surface by about 100mm.
After the sample is immersed in the liquid for 30 minutes, take it out. The sample is dried for about 30 minutes at room temperature, and then the winding test is carried out according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable; the change rate of the sheath thickness should not be greater than 6%, and the sheath color change should still be recognizable. 7.8 Insulation scrape test
7.8.1 The scrape test equipment is shown in Figure 4. The scraping test machine should be able to ensure that the scraper scrapes the surface of the insulation at a frequency of 50 to 60 times per minute along the axis of the sample. The scraping length should not be less than 10mm, and it should have a counter that automatically records the number of scraping times. When the scraper breaks the insulation and contacts the conductor, it should be able to stop scraping.
1 Reciprocating drive device; 2-magnetic code; 3-scraping: 4--pressing piece; 5-sample; 6-iron station Figure 4
7.8.2 The test should be carried out at room temperature.
Take a sample with a length of 750mm from the finished wire, fix the sample on the test device as shown in Figure 4, and apply a code of specified mass on the scraper.
After testing one point, move the sample forward 100mm1m and rotate 90° in the fixed direction. A total of 5 points are tested. The test result is the average of the 5 test values. 8 Inspection rules
8.1 Products can only be shipped after passing the inspection of the manufacturer. The products leaving the factory shall be accompanied by the manufacturer's product quality inspection certificate. 8.2 The products shall be inspected according to the provisions of Table 14. 8.3 The number of samples for each batch shall be agreed upon by both parties. If the user does not make any requirements, it shall be determined by the manufacturer. 352
JB/T 8139—1999
When the test results of the shaft sample inspection items are unqualified, double sampling shall be carried out for the second test. If it is still unqualified, 1C0 shall be tested again. 8.4 Product appearance application (test) Normal vision inspection piece by piece. Table 14
Structure and insulation test
Conductor structure
Insulation purity
Shielding thickness
Conductor resistance test
Insulation resistance test
30min power frequency AC voltage test
and breakdown voltage test
Insulation and insulation high temperature test
! Overheat test
Heat shrinkage test
Burning test
Low temperature winding test
Low temperature impact test
Insulation adhesion test
Insulation residual test
Oil resistance test
Fuel resistance test
Insulation scrape test
: Identification mark
Insulation core color mark
Finished cable mark
Article number
Inspection regulations
QVR.QFR.QVR-115
Note: S: Indicates periodic test, at least once every six months. 9 Delivery length
Test methods
GR/T 2009, 2
GB/T 2951. 2
GB/T 2951. 3
GB7r 2951.4
GB/T 304B.4
GB/13048.4-3348.6 and Appendix A
GB/13048.8, 7.1 and Appendix B
GB/T 2951. 16 and 17
GB/T 2931. 33
GB/T 2951. 19
GB/T 2931.12 and 7.3
GB/T 2951. 14
GB/T 6955
GR/T 6095
9.1 The delivery length of cables (wires) with fixed length requirements shall be as agreed upon by both parties. 9.2 In the absence of an agreement, the length shall be as specified in Table 15, and the length of the short section shall not exceed 10% of the total length of the delivery. 9.3 The number of cables (wires) in each packaging unit shall not exceed 5 sections. 9.4 The length measurement error shall not exceed 0.5%. Table 15
Length not less than hand
QVR105
QVR-105
0. 2 mm2~-2.5 mm2
4 mm~120 mm2
1×2.5 mm+6×1. 5 mm
10 packaging
JB/T 8139—1999
10.1 The coiled or rolled wires should be neatly wound and properly packed. 10.2 Each coil or roll should be labeled and marked with: a) Manufacturer name:
b) Wire model and specification (conductor structure), Im2; c) Length: m and number of sections;
d) Mass, kg
e) Manufacturing date: year, month;
f) Standard number or certification mark.
10.3 When packing, the outer shell of the box should be marked with: a) Manufacturer name;
b) Product model and specification, mm:
c) Product certification mark;
d) Box size and mass, mm×mm×mm.kg: e) Moisture-proof and anti-throw mark.The two ends of the sample are exposed to the oil surface by about 50 mm. The oil temperature is (90 ± 2) °C, and the temperature of the oil in the container should be uniform. JB/T81391999 After immersion in oil for 48 hours, take out the sample, wipe the surface clean, and cool it to room temperature. Then carry out the winding test according to the provisions of Appendix C. After the test, the insulation should not have cracks and tears visible to normal vision, and the insulation color should still be recognizable: the change rate of the sheath thickness should not be greater than 1%, and the sheath color should still be recognizable. 7.7 Fuel resistance test
7.7.1 Composition of the fuel liquid used for the test:
2,2,4-trimethylpiperazine 50% (volume ratio) Toluene
50% (volume ratio)
7.7.2 Cut a sample of 500mm in length from the finished wire and immerse it in the fuel liquid at room temperature, with both ends of the test sticking out of the liquid surface by about 100mm.
After the sample is immersed in the liquid for 30 minutes, take it out. The sample is dried for about 30 minutes at room temperature, and then the winding test is carried out according to the provisions of Appendix C. After the test, the insulation should not show cracks and tears visible to normal vision, and the insulation color should still be recognizable; the change rate of the sheath thickness should not be greater than 6%, and the sheath color change should still be recognizable. 7.8 Insulation scrape test
7.8.1 The scrape test equipment is shown in Figure 4. The scraping test machine should be able to ensure that the scraper scrapes the surface of the insulation at a frequency of 50 to 60 times per minute along the axis of the sample. The scraping length should not be less than 10mm, and it should have a counter that automatically records the number of scraping times. When the scraper breaks the insulation and contacts the conductor, it should be able to stop scraping.
1 Reciprocating drive device; 2-magnetic code; 3-scraping: 4--pressing piece; 5-sample; 6-iron station Figure 4
7.8.2 The test should be carried out at room temperature.
Take a sample with a length of 750mm from the finished wire, fix the sample on the test device as shown in Figure 4, and apply a code of specified mass on the scraper.
After testing one point, move the sample forward 100mm1m and rotate 90° in the fixed direction. A total of 5 points are tested. The test result is the average of the 5 test values. 8 Inspection rules
8.1 Products can only be shipped after passing the inspection of the manufacturer. The products leaving the factory shall be accompanied by the manufacturer's product quality inspection certificate. 8.2 The products shall be inspected according to t
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