JB/T 1601-1993 Rated voltage 300/500V rubber insulated fixed laying wire
Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T 1601-1993
Rated voltage 300/500V rubber insulated fixed laying wire 1993-08-21 Issued
Ministry of Machinery Industry of the People's Republic of China
Implementation on 1993-10-01
Mechanical Industry Standard of the People's Republic of China
Rated voltage 300/500V rubber insulated fixed laying wire Subject content and scope of application
JB/T1601-1993
Replaces JB1601-75
This standard specifies the product variety, specifications, technical requirements, test methods, inspection rules, marking and packaging of rubber insulated fixed laying wires (hereinafter referred to as wires) with a rated voltage of 300/500V. This standard applies to fixed laying copper core or aluminum core rubber insulated wires for electrical equipment and lighting devices with an AC rated voltage Uo/U of 300/500V and below. The long-term allowable working temperature of the wire is 65℃. Cited standards
GB3956
GB3957
GB8170
GB/T3048
GB7594
GB4909
GB/T2951
GB4005
Electrical equipment wire and cable steel, aluminum conductive wire core power cable copper, aluminum conductive wire core
Numerical chain rules
Test methods for electrical properties of wires and cables
Rubber insulation and rubber sheath of wires and cables
Technical requirements for natural cotton yarn
Alkali-free glass fiber yarn
Wires Test methods
Test methods for mechanical and physical properties of wires and cables Delivery trays of wires and cables
3 Codes, models and product representation methods
3.1 Code
3.1.1 Series code
Wires for fixed laying
3.1.2 Classification by material characteristics
Aluminum conductor
Insulation Natural styrene-butadiene rubber mixture
Sheath Fluorobutyl rubber or other equivalent synthetic rubber mixture Sheath Polyethylene
3.1.3 Classification by structure to be characterized
Soft structure
Braided type
3.2 Models
The models of wires are shown in Table 1.
Approved by the Ministry of Machinery Industry on August 21, 1993
·Omitted
Implemented on October 1, 1993
JB/T16011993
Copper core rubber insulation, chloroprene or other equivalent synthetic rubber mixture sheathed wire Aluminum core rubber insulation, chloroprene or other equivalent synthetic rubber mixture sheathed wire Copper core rubber insulation, black polyethylene sheathed wire Aluminum core rubber insulation, black polyethylene sheathed wire Copper core rubber insulation, cotton yarn or other equivalent fiber braided wire Aluminum core rubber insulation, cotton yarn or other equivalent fiber braided wire Copper core rubber continuous cotton yarn or other equivalent fiber braided soft wire 3.3 Product representation method
3.3.1 Product type The number, specification and number of this standard are expressed. 3.3.2 For example:
Applicable to indoor open-type and outdoor, especially in cold areas
Applicable to indoor pipe laying and outdoor, especially in cold areas
For fixed laying, can be laid openly or concealed
For fixed laying, can be laid openly or concealed
Indoor installation, when softer is required, use
Aluminum core rubber insulated chloroprene or other equivalent synthetic rubber mixture sheathed wire, rated voltage 300/500V, nominal cross-section 2.5mm, expressed as
BIXF300/500
4 Technical requirements
4.1 Specifications
The specifications of the wires are shown in Table 2.
4.2 Conductor
JB 1601→93
Rated voltage V
300/500
300/500
300/500
300/500
300/500
300/500
4.2.1 The conductor shall comply with the provisions of GB3956. 4.2.2 The conductor structure shall comply with the provisions of Table 3 to Table 5. Note: The diameter of the finished single wire is not tested,
Nominal cross section
0. 75~ 490
4.2.3 The copper single wire in the conductor may be tinned or not. The conductor may be covered with an insulating layer made of suitable material. 4.2.4 Stranded conductors are allowed to be compressed, and compressed round stranded conductors shall comply with the provisions of GB3957. 4.3 Insulation
4.3.1 The insulation is XJ-00A type 65℃ rubber insulation specified in GB7594.2. 4.3.2 The insulation shall be tightly wrapped on the conductor and shall be easy to pierce without damaging the insulator or conductor. The insulation surface shall be flat and uniform in color. 4.3.3 The copper conductor and insulation shall not be bonded. The insulating rubber shall not be delaminated. 4.3.4 The average value of the sum of the insulation and sheath thickness of BXF, BLXF, BXY, BLXY type wires shall not be less than the nominal value specified in Table 3, and the thickness of the thinnest point of the insulation shall not be less than the specified value in Table 3. 2
JB/T1601-1993
The thickness measurement results shall be rounded to one decimal place according to GB8170. 4.3.5 The average insulation thickness of BX, BLX and BXR wires shall not be less than the nominal value specified in Table 4 and Table 5, and the thickness at the thinnest point shall not be less than 90% of the nominal value minus 0.1mm. The thickness measurement result shall be rounded to one decimal place in accordance with GB8170. Table 3 Conductor of BXF, BLXF, BXY and BLXY 300/500V rubber insulated wires
Conductive wire core structure
Number of wires/single wire
Nominal diameter
Nominal cross section
Sum of insulation and sheath
Thickness at the thinnest
point
Not less than
Sheath The thinnest
point thickness
not less than
Table 4BX, BLX type 300/500V rubber insulated wire conductive wire core structure
Number of wires/single wire nominal diameter
Nominal insulation thickness
Upper limit of average outer diameter
Conductor resistance at 20℃
Not greater than
Tinned core
Conductor resistance at 20℃
|a/km not more than
nominal surface
nominal cross section
conductive core structure
number of roots/nominal diameter of single wire
JB/T16011993
nominal thickness of insulation
upper limit of average outer diameter
Table 5PXR type 300/5C0 rubber insulated wire
conductive core structure number of roots/nominal diameter of single wire mm
Insulation nominal thickness
Conductor resistance at 20℃
a/km not more than
0,0366
Average outer diameter upper limit
Conductor resistance at 2CC
0/km not more than
Insulated wire core shall be subjected to spark test specified in GB/T3048.9 or GB/T3048.13, and the test voltage shall comply with the provisions of Table 6. 4.3.6
Double-layer once-extruded wires shall only be subjected to one spark test. Table 6
0.5<841.0
1.0<8≤1.5
1.5<8≤2.0
AC (effective value)
Test voltage kV
JB/T1601-1993
Note: ①For double-layer single-extruded cables, 3 refers to the sum of insulation thickness and sheath thickness. ②For BX, BLX, and BXR type wires, 3 refers to the nominal insulation thickness, 4.4 Sheath
4.4.1The sheath of BXF and BLXF type wires shall be the XH-01A type 65℃C general non-flammable rubber sheath specified in GB7594.5. The sheath of BXY and BLXY type wires shall be low-density black vinyl. 4. 4.2
The sheath should be densely extruded on the insulation, and the surface of the sheath should be flat and uniform in color. 4. 4.3
The thickness of the thinnest point of the sheath should not be less than the value specified in Table 3. The thickness measurement result should be rounded to one decimal place according to GB8170. 4.4.4
5BX, BLX and BXR wires should use cotton yarn that meets the requirements of GB398 or meet the requirements of JC169 and Appendix A and B. 4.4.5
The specified equivalent fiber braiding, the braiding density should not be less than 80%. The braiding density is expressed as a percentage and is calculated as follows. Kimndr
K=(2K-K)×100%
Wherein, K-
-braiding density, %:
K-unidirectional coverage coefficient;
L--braiding pitch mm:
d--fiber strand diameter, mm
D--braiding layer inner diameter, mm
m-total number of spindles
n-number of roots per spindle.
4.4. The braiding layer should be impregnated with asphalt mixed coating, the coating should be uniform, the surface of the wire should not turn yellow after it is impregnated, and the coating should not be sticky. Glass fiber braided layer is allowed to have individual white spots.
4.5 Finished wires
4.5.1 Mechanical and physical properties of finished wire insulation The mechanical and physical properties of BLX, BXR, BXY, BLXY type wire insulation shall comply with the provisions of Table 7. The mechanical and physical properties of BX, 1
BXF, BLXF type wire insulation shall comply with the provisions of Table 7. When double-layer one-time extrusion is used, it shall comply with the provisions of Article 4.5.2.
JB/T1601-1993
Mechanical and physical properties of XJ-00A type insulating rubber Table 7www.bzxz.net
Tensile strength and elongation at break
Original properties
Tensile strength
Elongation at break
Air oven aging test
Aging conditions: temperature
Tensile strength after aging
Change rate
Elongation at break after aging
Change rate
Oxygen bomb aging test
Aging conditions: temperature
Tensile strength after aging
Change rate
Elongation at break after aging
Change rate
Hot extension test
Applied load
Load time
Elongation under load|| tt||Permanent deformation after cooling
Energy requirements
10×24
75±23
200±3
Note: 1) If the tensile strength is equal to or greater than 5.CMPs after the oven aging test, the change rate of tensile strength and elongation at break should not be greater than 40%, and a 4-day oxygen bomb aging test should be carried out. If the tensile strength is less than 5.0MPa but not less than 4.2MPa after the oven aging test, a 7-day oxygen bomb aging test should be carried out:
2) If the tensile strength after 4X24h oxygen bomb aging test is not less than 5.0MPa, and the change rate of tensile strength and elongation after air oven aging test is not greater than 25%, the change rate of tensile strength after 4×24h oxygen bomb aging should not be greater than 40%, and the change rate of elongation should not be greater than 30%. If the tensile strength after 4×24h oxygen bomb aging test is not less than 5.0MPa, and the change rate of tensile strength or elongation after air oven aging test is greater than 25%, then the change of tensile strength after 4×24h oxygen bomb aging should not be greater than 25%, and the change rate of elongation should not be greater than 35%; 3) If the tensile strength obtained by 10×24h air oven aging and 4×24h oxygen bomb aging is less than 5.0MPa, but not less than 4.2N/mm, a 7×24h oxygen bomb aging test must be carried out. After the test, the change rate of tensile strength should not be greater than 25%, and the change rate of elongation should not be greater than 35%. 4) The finished insulated wire with no tinned conductor and no isolation layer should be carried with the conductor during the aging test. 4. 5.2
Mechanical and physical properties of finished wire sheaths
The mechanical and physical properties of BXY and BLXY wire sheaths shall comply with the provisions of Table 8. The mechanical and physical properties of BXF and BLXF wire sheaths shall comply with the provisions of Table 8. When double-layer one-time extrusion is adopted, the mechanical and physical properties of the insulation and sheath of the finished wire (one-time assessment) shall comply with the provisions of Table 9, but the provisions of 8XH-01A.
The material test pieces of the insulation and sheath shall still meet the requirements of Table 7XJ-00A and Table 86 respectively
Test items
Tensile strength and elongation at break
Original properties
Tensile strength
Elongation at break
Air oven aging test
Aging conditions; temperature
Tensile strength after aging
Tensile strength change rate after aging
Elongation at break after aging
Elongation at break change rate after aging
Hot extension Elongation test
Car air temperature
Test conditions
Teaching time
Applied load
Elongation under load
Permanent deformation after cooling
Oil immersion test
Test conditions
Butter temperature
Oil-out time
Tensile strength change rate after oil immersion
Tensile elongation change rate after oil immersion
Note: 1) No upper limit value is specified,
2) Low density black ethylene sheath
JB/T 16011993
Mechanical and physical properties of sheath
Performance requirements
XH-C1A
10×24
200±3
100±2
Mechanical and physical properties of double-layer one-time extruded rubber (insulation and sheath) Table 9
Original properties
Tensile strength
Elongation at break
Test items
Air oven aging test
Aging conditions Temperature
Tensile strength change rate after aging
Elongation at break change rate after aging
Note: 1) For high-quality insulated wires with untinned conductors and no isolation layer, the conductor should be carried during aging. 4.5.3 The outer diameter of the wire should comply with the provisions of Table 3 and Table 5. 4.5.4 The conductor resistance of the wire should comply with the provisions of Table 3 and Table 5. 4.5.5
The wire shall be subjected to the AC 50Hz submerged voltage test specified in Table 10. The wire shall be subjected to the surface coating viscosity test specified in Article 5.2. Unit
100±2
Performance requirements
75±2\
10×24
Test conditions
Crystallized wire immersion voltage test
Minimum sample length
Minimum water application time
Test voltage value
Minimum voltage application time
4.6 Delivery length
JB/T1601-1993
Voltage test
Performance requirements
The delivery length of the wire shall not be less than 100m: short wire segments with a length of not less than 20m are allowed to be delivered, and their number shall not exceed 10% of the total delivery length.
According to the agreement between the two parties, any length of wire can be delivered. The length is measured with a meter, and the error should not exceed ±0.5%. 4. 6.31
Test method
5.1 The test method shall be as specified in Table 11.
5.2 Wire surface polyester stickiness test.
Take a straight sample with an outer diameter not greater than 11.0mm and a length not less than 200mm, place it on a paper sheet on a smooth non-metallic plate, put it in an oven together with the metal plate, let it stand at +50°C for 30 minutes, take it out and cool it at room temperature for 15 minutes, the sample should be able to be removed from the paper sheet without stickiness, and slight traces of paint on the paper sheet are allowed. During the test, the sample shall not contact the oven wall. Table 11 Inspection items
Test items
Structural and dimension inspection
Conductor structure
Insulation thickness at one point
Nominal insulation thickness
Sheath thickness at one point
Average thickness of insulation and sheath
Conductor resistance test
Finished wire immersion voltage test
Insulation physical properties
Tensile strength after aging
Breaking elongation before and after aging
Oxygen bomb aging
Hot elongation
Physical and mechanical properties of sheath
Tensile strength before and after aging
Breaking elongation before and after aging
Surface coating viscosity test
Finished wire external connection inspection
1) Regular sampling test, this standard stipulates 6 months, Note:
Article number
4.4.3; 4.4.7+ 6. 4
Test type
Test method
GB 4909.2
GB/T 2951.2
GB/T 2951.2
GB/T2951.3
GB/T2951.3
GB/T 2951.4
GB/T 3048. 4
GB/T 3048.8
GB/T 2951.5 and 7
GB/T 2951. 5 and 7
GB/T 2951. 9
GB/T2951.18
GB/T 2951.5 and 7
GB/T 2951. 5 and 7
Article 5.2 of this standard
Normal visual inspection
Meterometer
Inspection rules
JB/T1601-1993
Products shall be inspected and qualified by the technical inspection department of the manufacturer before they can leave the factory. Ex-factory products shall be accompanied by a product quality inspection certificate. 2 Products shall be inspected according to the prescribed tests.
The definitions of type test (T), sampling test (S) and routine test (R) are as specified in GB/T2951.1. 6.3
The number of samples for each batch shall be determined by the agreement between the two parties. If the user does not make any request, it shall be determined by the manufacturer. If the test results of the sampling items are unqualified, the samples shall be doubled for a second test. If they are still unqualified, 100% test shall be conducted. The appearance of the products shall be checked visually (normal vision) piece by piece. Marking and packaging
The wires in rounds or drums shall be wound neatly and properly packaged. The cable drums shall comply with the provisions of GB4005. Each drum or drum shall be attached with a label indicating: a.
Manufacturer name:
Model and specifications:
Rated voltage, V;
Length, m:
Manufacture date:
Number of this standard:
Correct rotation direction of the cable drum.
When packing, the box shell should be marked with:
Manufacturer name:
Product model, specification and rated voltage: mm, V, box size and weight, kg
Moisture-proof, anti-movement signs,
The packaging of export products should be carried out in accordance with relevant regulations. Brand
Medium alkali yarn 6-75/2
Medium alkali yarn 6-75/4
Medium alkali yarn 8-45/1
Medium alkali yarn 8--45/2
Medium alkali yarn 8
Medium alkali yarn 8--45/4
Medium alkali yarn 8-45/10
Fiber deviation
Additional instructions:
Nominal diameter of single fiber
Fiber unevenness
%Maximum
JB/T 16011993
Appendix A
Specifications and mechanical and physical properties of medium-alkali glass fiber yarn (supplement)
Metric count
(Metric number)
37.5±3.8
(26.7±2.7)
18.8±1.9
(53.3±5.3)
(22.2±2.2)
22.5±2.2| |tt||(44.4±4.4)
(66.7±6.7)
(88.9±8.9)
(222±22)
Count No hook rate is not more than
Appendix B
Specifications and mechanical and physical properties of polypropylene filament (supplement)
Breaking strength
Elongation at break
This standard is proposed and managed by Shanghai Cable Research Institute of the Ministry of Machinery Industry. This standard is drafted by Shanghai Cable Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Zhu Cuizhen.
Boiling water shrinkage coefficient
%max
Breaking strength is not less than
Strength unevenness
%max
10/m
40~120
Elongation unevenness
%max
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