This standard specifies the product varieties, specifications, technical requirements, test methods, inspection rules, marking and packaging of polyimide-fluorine 46 composite film wrapped copper round wire. JB/T 5331-1991 Polyimide-fluorine 46 composite film wrapped copper round wire JB/T5331-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 5331 -1991
Polyimide-fluorine 46 composite film wrapped copper round wire 1991-09-28 Issued
The Ministry of Machinery and Electronics Industry of the People's Republic of China implemented on 1992-07-01
Mechanical Industry Standard of the People's Republic of China
Polyimide-fluorine 46 composite film wrapped copper round wire Subject content and scope of application
JB/T5331-1991
This standard specifies the product variety, specifications, technical requirements, test methods, inspection rules, marking and packaging of polyimide-fluorine 46 composite film wrapped copper round wire (hereinafter referred to as wrapped wire). This standard applies to the wrapped wire for H-class and below submersible motors and similar oil-filled special motors,1 and also applies to the wrapped wire for the insulation wire
core of submersible pump cables.
Referenced standards
GB6108
GB3953
GB1343
GB3048
Winding wire conductor
Electrical coil wire
Test method for wrapped wire
Wire and cable
Test method for electrical properties
Terms, codes, models and product representation methods 3
3.1 Technical spectrum
3.1.1 Conductor,
The metal part of the wrapped wire after the insulation is removed. 3.1.2 Insulation thickness: The difference between the outer diameter of the wrapped wire and the diameter of the conductor. 3.1.3 Torsion times: The absolute value of the difference in the number of rotations of the two end faces of the gauge line segment of the wrapped wire sample in the torsion test. 3.2 Code
Film Wrapped Wire
Polyimide 46 Fluorine Film
Film Wrapping Layers Mark:
Withstand Voltage Characteristics Mark: Indicated by Withstand Voltage KV Value. For example: 7.25 indicates that the product withstands voltage of 7.25kV. 3.3 Model
The model of the wrapped wire is shown in Table 1.
MYFE-4
MYFS—7.25
MYFS—8.7
MYFS-10
Approved by the Ministry of Machinery and Electronics Industry on September 28, 1991
Present voltage 4kV Double-layer polyimide-fluorine 46 composite film wrapped copper round wire Withstand voltage 7.25kV Three-layer polyimide-fluorine 46 composite film wrapped copper round wire Withstand voltage 8.7kV Three-layer polyimide-fluorine 46 composite film wrapped copper round wire Attached voltage 10kV Three-layer polyimide-chlorine 46 composite film wrapped copper round wire 1992-07-01 Implementation
3.4 ​​Product representation method
JB/T5331-1991
3.4.1 Products are represented by model, specification and number of this standard. ：For example; the nominal diameter of the conductor is 2.120mm, and the voltage is 8.7kV. The three-layer polyimide-fluorine 46 composite film wrapped solid copper wire is shown as follows: 3.4.2
MYFS--8.7
Technical requirements
JB5331-91
4.1 Materials
The copper round wire used for the wrapped wire shall meet the requirements of the TR round wire specified in GB3953. The surface of the copper wire shall be clean and smooth, and shall not have burrs, scratches, oxide layers or oil stains.
4.1.2 The insulation of the wrapped wire shall be made of polyimide-fluorine 46 composite film, and its performance shall meet the requirements of Appendix A of this standard. 4.2 Conductors
The conductor of the wrapped wire shall meet the requirements of GB6108. The nominal diameter and limit deviation of the wrapped wire conductor shall meet the requirements of Table 2. 4.2.2
Conductor nominal diameter
Limit deviation
±0917
±0,919
±0,024
±0934
±0,050
Minimum value
0,008237
0,006529bZxz.net
0,004708
0,003012
0,902351
0,901504
0,901171
0,001045
DC resistance
Maximum value
0, 005600
0,004462
0,003190
0,002489
0,901996
0,001778
Note: For the wrapped wire conductor with a diameter not specified in the table produced by the manufacturer and the user in agreement, the deviation value is 1% of the nominal diameter. Insulation
Film wrapping and appearance
The inner layer of the insulation layer of the wrapped wire should be double-sided composite film (referred to as FHF film), and the outermost layer should be single-sided composite film (referred to as HF film) or FHF film. The wrapping should be tight and uniform, and wrinkles and faults are not allowed. The wrapping direction of each layer is the same, and the overlap should not overlap. The wrapped wire needs to be spun at high temperature to make the wrapped layer bonded as a whole. The surface of the insulation layer should be smooth, and there should be no defects such as blistering, delamination and film warping. 2
4.3.2 Insulation thickness
JB/T5331-1991
The nominal insulation thickness and limit deviation of the wrapped wire shall comply with the provisions of Table 3. The local insulation thickness at the film joint is allowed to increase by 0.10mm. Qiu
MYFE—4
MYFS-7.25
MYFS--8.7
4.3.3 Maximum outer diameter
Nominal insulation thickness
Limit deviation
The maximum outer diameter of the wrapped wire shall not exceed the sum of the maximum outer diameter of the conductor and the maximum insulation thickness. When the maximum outer diameter meets the requirements, the insulation thickness is allowed to exceed the value specified in Table 3.
The maximum outer diameter of the wrapped wire for the insulation core of the submersible pump cable shall be agreed upon by the manufacturer and the user. Resistance
The DC resistance of the conductor of the wrapped wire at 20℃ shall comply with the provisions of Table 2. Elongation
The elongation at break of the wrapped wire shall not be less than the value specified in Table 4. Table
Conductor nominal diameter
3.000d5.000
Flexibility
After the wrapped wire is wound on a round rod of the diameter specified in Table 4, the insulation layer shall be free of cracks and delamination. Table
Conductor nominal diameter
3,000
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