GB 5023.6-1997 Polyvinyl chloride insulated cables with rated voltages up to and including 450/750V Part 6: Elevator cables and flexible connecting cables

This part specifies in detail the technical requirements for elevator cables and flexible connection cables with rated voltages of 450/750V and below. Each cable shall comply with the corresponding requirements of GB 5023.1 and the special requirements of this part. GB 5023.6-1997 Polyvinyl chloride insulated cables with rated voltages of 450/750V and below Part 6: Elevator cables and flexible connection cables GB5023.6-1997 Standard download decompression password: www.bzxz.net

1 General
National Standard of the People's Republic of China
Rated voltage 450/750V and below
Polyvinyl chloride insulated cables
Part 6: Lift cables and cables for tlexible connection1.1 Scope
GB 5023.6—1997
idt IEC 227-6: 1985
Part 6 of this standard specifies in detail the technical requirements for elevator cables and cables for flexible connection with rated voltage up to and including 450/750V. Each cable shall comply with the corresponding requirements of GB5023.1 and the special requirements of this part.1.2 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 are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2951.1—1997 General test methods for cable insulation and sheathing materials Part 1: General test methods
Section 1: Thickness and dimensional measurement-mechanical properties test GB/T 2951.2—1997
General test methods for relay insulation and sheathing materials Part 1 General test methods
Section 2: Thermal aging test methods
GB/T2951.4—1997 General test methods for cable insulation and sheathing materials Part 1: General test methods
Section 4: Low temperature test
GB/T 2951. 6—1997
General test methods for cable insulation and sheathing materials Part 3: Special test methods for vinyl chloride mixtures Section 1: High temperature pressure test-cracking resistance test GB/T 2951.7—1997
General test methods for cable insulation and sheath materials Part 3: Special test methods for polyvinyl fluoride mixtures Section 2: Weight loss test - thermal stability test GB/T3956—1997 Cable conductors
GB5013.2—1997 Rubber insulated cables with rated voltages of 450/750V and below Part 2: Test methods
GB 5023.1—1997
Polyvinyl chloride insulated cables with rated voltages of 450/750V and below Part 1 1 General requirements
Guohao Technical Supervision Bureau Approved on July 30, 1997 and implemented on September 1, 1998
GB 5023.6—1997
GB5023.2—1997 Polyvinyl chloride insulated cables with rated voltages of 450/750V and below Part 2: Test methods
GB/T12666.2—90 Fire test methods for wires and cables Part 2: Vertical fire test methods for single wires and cables 2 Flat polyvinyl chloride sheathed elevator cables and flexible connecting cables 2.1 Model
227 IEC 71f (TVVB).
2.2 Rated voltage
Cables with a conductor nominal cross-section not exceeding 1mm2: 300/500V. - Other cables: 450/750V.
2.3 Structure
2.3. 1 Conductor
Number of cores: 3, 4.5.6, 9, 12, 16, 18, 20 or 24 cores. The combinations of conductor cross-section and core number are listed in the following table: Conductor nominal cross-section
0. 75 and 1
1.5 and 2.5
4.5.10.16 and 25
Non-preferred core numbers are in brackets,
(3).(4),(5),6.9,12,(16).(18).(20) or 24(3), 4,5,6,9 or 12
Conductors shall comply with the requirements of the 5th conductor specified in GB/T 3956. Number
Conductors on both sides of the insulated core may be made of copper wire and steel wire. The nominal geometry of these conductors shall be equal to the cross-section of other conductors, and their maximum resistance shall not be greater than twice the maximum resistance of the copper conductor with the same nominal cross-section. 2.3.2 Insulation
The insulation extruded on each core conductor shall be a PVC/D-type polyvinyl chloride mixture. The insulation thickness shall comply with the value specified in the second column of Table 1. The insulation resistance shall not be less than the value specified in the third column of Table 1. 2.3.3 Arrangement of insulated cores and load-bearing elements (if any) The insulated cores shall be arranged in parallel, but it is also allowed to first twist 2 cores, 3 cores, 4 cores or 5 cores into groups and then arrange them in parallel. In this case, a tear cord can be clamped in each group of insulated cores. The insulated cores shall be separable without damaging the insulation. Single-strand or multi-strand load-bearing elements may use fabric materials. Single-strand or multi-strand load-bearing elements may also use metal materials. In this case, they should be coated with a layer of non-conductive wear-resistant material. If the insulated cores are twisted and arranged in groups, they should be grouped as specified in the following table. The number of insulated cores
and the nominal value of the spacing between groups e are listed in the second column of Table 2 (see Figure 1). 12
4+5+5+4
There is no requirement for the average value of the spacing e, but any spacing between groups can be less than the nominal value e1, as long as it is not less than 80%-0.2mm of the nominal value
2.3.4 Sheath
The sheath extruded on the insulating core should be a PVC/ST5 type polyvinyl fluoride mixture. The sheath should be tightly extruded to avoid the formation of air holes, and should not adhere to the insulating core. The edges of the fan-shaped cable should be rounded. GB5023.6—1997
The thickness of the sheath should comply with the specified values ​​of and e in column 3 of Table 2 (see Figure 1). The average values ​​of e and should not be less than the corresponding specified values. However, the thickness at any point may be less than the specified value, as long as it is not less than 80% of the corresponding specified value-0.2 mm
Radius of curvature
Short axis (D)
Note: This figure is a schematic diagram of the sheath thickness and spacing listed in Table 2. It does not represent the actual size. Figure 1 Cable cross-section diagram
The inspection and test specified in Table 3 should be used to check whether it meets the requirements of 2.3. However, since the cross-section of the cable is rectangular, the following modifications and additions should be considered. As applicable, the contents of 2.4.1 to 2.4.5 should be used in combination with the relevant tests specified in Table 3. 2.4.1 Sheath high temperature pressure test
If the shape of the short side of the cable is completely circular, the test should be carried out on one side of the short side according to the provisions of 8.2 in GB/T2951.6-1997.
-Pressure calculation
D is the minor axis dimension of the cable;
8 is the average thickness of the sheath es, which is measured according to 8.2 of GB/T2951.1-1997. If the short side is flat or approximately flat as shown in Figure 1, the test is carried out according to 8.2 of GB/T2951.6-1997 combined with the following modifications.
Test piece preparation
Cut a narrow strip from the wide side of the cable along the axial direction of the cable. The ridges on the inner side of the tie bar should be ground or flattened. The width of the tested narrow strip should be at least 10mm but not more than 20mm, and the thickness measurement should be carried out at the applied pressure F. Position of the test piece in the test equipmentbZxz.net
The narrow strip should be wound on a mandrel with a diameter approximately equal to the diameter of the cable insulation core. The longitudinal axis of the narrow strip is perpendicular to the axis of the mandrel, and the contact surface of its inner surface with the circumference of the mandrel should be at least 120° (see Figure 2). The gold blade of the test equipment should be placed in the middle of the test piece. Pressure calculation
d is the thickness of the narrow strip at the pressure point, in mm. See 8.2.4 in GB/T2951.6-1997.D is the sum of the core rod diameter and 2d, in mm. -Indentation
The depth of the indentation is related to the original value d mentioned above. 2.4.2 Low-temperature impact test of finished cable
GB 5023. 6-1997
Metal blade
Fixed test piece of the gauge on the mandrel
Figure 2 Indentation test device
The weight of the falling hammer during the low-temperature impact test should be selected according to the provisions of 8.5 in GB/T2951.4-1997 based on the short axis size of the flat cable.
2.4.3 Flexure test
This test is not applicable to elevator cables (a more suitable test for this type of cable is under consideration). The test is only carried out on cables with a conductor nominal cross-section of 0.75mm, 1mm21.5mm, 2.5mm or 4mm and no more than 5 cores.
The weight of the hammer at both ends of the cable and the diameters of the pulleys A and B are specified in the following table. Flexible cable type
The conductor nominal cross-section of the flat ethylene-based sheathed cable for flexible connection is 0.75 mm* and 1 mm*
1. 5 mm2 and 2. 5 mm*
2,4.4 Static flexure test
This test is applicable to cables with conductor cross-section of 2.5 mm and below. Before the test, the cable should be placed vertically at 20 ± 5°C for 24 hours. The qualified distance of the test should not be greater than 0.70 m. Hanging weight
Pulley diameter
For these cables, the test method specified in 3.2 of GB5013.2-1997 shall be adopted, but the relevant paragraph shall be changed to: "If the test result is unsatisfactory, the sample shall be pre-treated, that is, the sample shall be wound on a mandrel with a diameter of about 20 times the cable short axis size, and then loosened, and this shall be repeated twice. Each time the sample is rotated 180°. After the pre-treatment is completed, the above test shall be carried out again, and it shall meet the requirements specified by the Taiwan authorities."
2.4.5 Non-flammability test
In this test, a Bunsen burner is used to ignite the middle of the flat side of the cable. 2.5 Guidelines for use
GB 5023. 6-1997
This type of cable is intended for installation in elevators and hoists with a free hanging length not exceeding 35m and a moving speed not exceeding 1. 6 m/s. When the scope of use of the cable exceeds the above limits, it shall be resolved through negotiation between the purchaser and the manufacturer, such as adding load-bearing components. This specification does not apply to cables used at temperatures below 0°C. In normal use, the maximum conductor temperature is 70°C. Note: Other guidelines are under consideration.
Table 1227 General data of IEC71f (TVVB) type cable Nominal conductor area
Specified value of insulation thickness
Minimum insulation resistance at 70℃
Mo·km
Table 222? Spacing between IEC71f (TVVB) type relay groups and sheath thickness Nominal conductor cross-section
Electrical performance test
Body resistance
Nominal value of distance
Table 3227 Test items of IEC71f (TVVB) type cable Test item
Voltage test of insulation core according to rated voltage and insulation thickness U./U:300/500V, insulation thickness: ≤0.6mm Test voltage: 1500V
U./U:450/750 V, insulation thickness: >0.6mm Test voltage: 2 500 V
Finished cable is subjected to voltage test according to rated voltage U/U.300/500V. Test voltage: 2000VU./U:450/750V, test voltage: 2500VInsulation resistance at 70℃
Structural dimension inspection
Test type
Specified value of sheath thickness
GB(GH/T)
5023.1 and 5023.2
Article number
Structural inspection
Insulation thickness measurement
Sheath thickness measurement
Insulation mechanical properties
Tensile test before aging
After aging Tensile test
Weight loss test
Mechanical properties of sheath
Tensile test before aging
Tensile test after aging
Weight loss test
High temperature pressure test
Test items
Low temperature elasticity and impact strength
Low temperature bending test of insulation
Low temperature bending test of sheath
Low temperature tensile test of sheath
Low temperature impact test of finished cable
Thermal shock test
Mechanical strength of finished cable
Bending test
Static bending test
Non-flame retardation test
GB 5023.61997
Table 3 (end)
Test type
Test method
GB(GB/T)
Text number
Inspection and manual test
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