This standard specifies the product varieties, technical requirements and inspection rules of the flexible cables for the winding connection of Freon-resistant motors. This standard applies to the flexible cables for the winding connection of Freon-resistant motors. In addition to meeting the requirements specified in this standard, this standard shall also meet the relevant provisions of JB 6213.1. JB/T 6213.5-1992 Flexible cables and cords for the winding connection of motors Part 5: Flexible cables for the winding connection of Freon-resistant motors JB/T6213.5-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T6213.5-1992
Flexible Cables and Cords for Connecting Motor Windings
Part 5
Published on 1992-06-16
Freon-resistant Soft Cords
Implemented on 1993-01-01
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
6 Technical Requirements||t t||6.1 Conductor
1—Pin conductor;
JB/T6213.5-1992
Figure 1 Schematic diagram of the structure of JZ type wire
Inner braided layer;
3 Wrapping layer
: Schematic diagram of the strong structure of type wire
Figure 2 JF46
1—Aluminum-plated pin conductor:
6.1.1 The conductor shall comply with the provisions of GB3956. 6.1.2 The conductor structure shall comply with the provisions of Table 2. 4 Braided layer,
2—Extruded insulation layer;
6.2 Insulation
6.2.1 The insulation shall be wrapped, braided or extruded on the conductor, and shall be easy to strip without damaging the conductor or tinned layer. The insulation surface shall be flat and uniform in color.
6.2.2 The insulation of JB type wire shall consist of inner and outer braided layers of polyester fiber and a polyester film wrapping layer. Any of the structural types shown in Figure 1 may be selected. The performance of polyester fiber shall comply with the provisions of Appendix B of JB6213.1, the performance of polyester film shall comply with the provisions of JB1256, and the insulation thickness shall comply with the provisions of Table 2.
6.2.3 The insulation of JF46 type wire shall be made of extruded polyperfluoroethylene propylene (FEP), the average thickness of which shall not be less than the specified nominal value, and the thickness of its thinnest point shall not be less than 90% of the nominal value minus 0.1mm. The main properties of FEP shall comply with the provisions of Appendix C of JB6213.1. 6.2.4 The JF46 type wire shall be subjected to the 50Hz spark test specified in GB3048.9, and the test voltage value shall be 7.5kV. 5.2.5 The insulation resistance of the JF46 type wire at 20℃ shall be greater than 2000Mn·km. 7 Color marking
7.1 The outer braided layer of JZ type wire shall be marked with color-changing traces. The main color of the braided layer is white, and the traces can be red, black, blue, yellow, etc. The traces can be single oblique stripes or double oblique stripes, and their direction is "Z". 7.2 JF46 type wire shall use color identification marks, and its colors can be red, black, white, etc. 2
8 Finished wires
The outer diameter of the finished wires shall comply with the provisions of Table 2. 8.1
JB/T6213.5-1992
8.2 The conductor resistance of the finished wires shall comply with the provisions of Table 2. 8.3 The finished wires shall be subjected to voltage test.
8.3.1 JZ type wires shall be subjected to winding electrode voltage test, and the specimen shall not be punctured. 8.3.2JF46 type wires shall be subjected to water immersion withstand voltage test, the immersion time shall not be less than 1h, the test voltage shall be AC ​​50IIz, 1.5kV, the duration shall be 1min, and the sample shall not be broken down.
8.4JZ type finished wires shall be subjected to the refrigerant resistance test specified in Article 9.2 of this standard, the sample shall not be cracked after winding, and the voltage test shall not be broken down.
8.5The finished wire of JZ type shall be subjected to the flexibility test specified in Article 9.3 of this standard. The (D,-D,) values ​​of the 15 specimens shall all comply with the provisions of Table 3.
Nominal cross section
(D,-D)>
0.50.751.01.251.52.02.5
504535
8.6The finished wire of JZ type shall be subjected to the clamping force test of the insulator on the conductor specified in Article 9.4 of this standard. The clamping force of the insulation on the conductor shall not be less than 4.5N,
8.7 Finished wires shall be subjected to the heat shrinkage test specified in Article 9.5 of this standard. The shrinkage length at both ends of the JZ type wire insulation shall be less than 3mm, and the shrinkage rate of the JF46 type wire shall be less than 2%.8.8 Finished wires of JZ type shall be subjected to the heat shrinkage test specified in Article 9.6 of this standard. The color code on the wire after trichloroethane treatment and heat treatment shall not penetrate into the white line and the color code line.8.9 Finished wires of JZ type shall be subjected to the solvent resistance test specified in Article 9.7 of this standard, and the extraction rate shall be less than 1%.8.10 Finished wires of JF46 type shall be subjected to the heat aging test, the test temperature is 250℃, the duration is 96h, and the change rate of tensile strength and elongation after aging shall be less than 20%.8.11 Finished wires of JF46 type shall be subjected to the environmental stress cracking resistance test specified in Article 9.8 of this standard, and all 5 samples shall pass the voltage inspection.
Test method
9.1 Wrapped electrode voltage test
9.1.1 Sample preparation
The sample is about 100mm long.
9.1.2 The test equipment should comply with the provisions of GB3048.8. 9.1.3
Test steps
Put the sample in an oven at a temperature of 65±3℃ for 4h. b. Take out the sample from the oven and wrap it tightly with a metal tape, with a wrapping length of about 65mm. c. Apply an AC 50Hz voltage of 3kV between the conductor and the metal foil for 1min. 9.2 Refrigerant resistance test
9.2.1 Sample preparation
The sample is about 1.2m long.
9.2.2 Test equipment
The composition of the test mixed liquid is as follows:
Freon 2280% (weight ratio)
Refrigerator oil 20% (weight ratio)
The weight of the mixed liquid per unit volume is 225g/
High-pressure sealed container, capacity is 1~31.
One 200℃ aging oven.
Test steps
JB/T6213.5-1992
Put the sample in an oven at 150±3℃ and dry it for 1 hour; put the dried sample in a container filled with a mixture of Freon 22 and refrigeration oil, and keep the sealed container at b.
30±3℃ for 24 hours;
Take the sample out of the mixture and dry it in an oven at 150±3℃ for 10 minutes, and wind the sample on a gold round bar 10 times the sample wire diameter. Apply an AC 50Hz voltage of 3kV between the sample conductor and the metal round bar for 1 minute. Softness test
Sample preparation
Each sample is about 610mm long;
5 samples without heat treatment;
5 samples placed at 163±3℃ for 6h;
5 samples placed at 149±3℃ for 15h. Test equipment
A 200℃ oven;
Meter ruler.
Test steps
Install the sample as shown in Figure 3.
Adjust the inner diameter D to 187mm, add a weight of 170g at the lowest point P of the circumference, and add the base weight slowly in 5s to prevent the sample from experiencing a sharp change;
!
After adding the weight to the sample for 30s, measure the diameter D2 at the position shown in Figure 4; calculate the value of (D1--Dz). bZxz.net
D2 measurement position
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