Part 3 of this standard specifies in detail the technical requirements for PVC insulated single-core non-sheathed cables for fixed wiring with rated voltages of 450/750V and below. All cables shall comply with the corresponding requirements specified in GB 5023.1, and various types of cables shall comply with the special requirements specified in this part. GB 5023.3-1997 PVC insulated cables with rated voltages of 450/750V and below Part 3: Non-sheathed cables for fixed wiring GB5023.3-1997 Standard download decompression password: www.bzxz.net

1 General
1.1 Scope
National Standard of the People's Republic of China
Polyvinyl chloride insulated cablesof rated voltages up to and including 450/750V
Part 3:Non-sheathed cables for fixed wiringGB5023-3—1997
fdt IEc 227-3:1993
Replaces GB5023.2—85
GB 5023.3—85
Part 3 of this standard specifies in detail the technical requirements for polyvinyl chloride insulated single-core non-sheathed cables for fixed wiring of rated voltages up to and including 450/750V.
All cables shall comply with the corresponding requirements specified in GB5023.1, and various types of cables shall comply with the special requirements specified in 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 will be revised, 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: Measurement of thickness and overall dimensions
GB/T 2951.21997
Mechanical properties test
General test methods for cable insulation and sheathing materials Part 1: General test methods
Section 2: Thermal aging test methods
GB/T 2951.4—1997#
General test methods for cable insulation and sheathing materials Part 1: General test methods
Section 1: Low temperature test
General test methods for cable insulation and sheathing materials GB/T 2951.61997
Part 3: Special test methods for ethylene fluoride mixtures Section 1: High temperature pressure test - cracking resistance test General test methods for cable insulation and sheathing materials GB/T 2951.7—1997
Part 3: Special test methods for polyvinyl chloride mixtures Section 2: Weight loss test-thermal stability test GB/T3956—1997 Cable conductors
GB5023.1-1997 Polyvinyl chloride insulated cables with rated voltages of 450/750V and below Part 1: General requirements
Approved by the State Administration of Technical Supervision on July 30, 1997 Implemented on September 1, 1998
GB 5023. 2—1997
GB 5023. 3—1997
Polyvinyl chloride insulated cables with rated voltages up to and including 450/750V 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 Single-core rigid conductor non-sheathed cables for general use 2.1 Model
227 IEC 01(BV).
2.2 Rated voltage
450/750V.
2.3 Structure
2.3.1 Conductor
Number of cores: 1 core.
The conductor shall comply with the requirements specified in GB/T3956. Type 1 is used for a solid conductor.
Type 2 is used for a stranded conductor.
2.3.2 Insulation
The insulation extruded on the conductor shall be a PVC/C type hydrophilic vinyl mixture. The insulation thickness shall comply with the value specified in column 3 of Table 1. The insulation resistance shall not be less than the value specified in column 5 of Table 1. Table 1227Comprehensive data of IEC 01 (BV) type cableConductor nominal cross section
Conductor type
Insulation thickness specified value
Average outer diameter upper limit
Minimum insulation resistance at 70℃
Ma·km
Conductor nominal cross section
2.3.3 Outer diameter
Conductor type
GB 5023.3—1997
Table 1 (end)
Insulation thickness specified value
Average outer diameter shall not be greater than the upper limit specified in column 4 of Table 1. 2.4 Test
Upper limit of average outer diameter
The inspection and test specified in Table 2 shall be used to check whether it meets the requirements of 2.3. 2.5 Guidelines for use
In normal use, the maximum temperature of the conductor is 70℃. Note: Other guidelines are under consideration.
Table 2227Test item number of IEC01 (BV) type cable
Electrical performance test
Conductor resistance
2 500V voltage test
Insulation resistance at 70 ms
Structural dimension inspection
Structural inspection
Thickness measurement
Outer diameter measurement
Insulation mechanical properties
Tensile test before aging
Tensile test after aging
Fish loss test
High temperature pressure test
Test items
Low temperature elasticity and impact strength
Insulation low temperature bending test
Insulation low temperature tensile test|| tt||Continuous low-temperature impact test
Thermal shock test
No delay test
1) It is only applicable when the outer diameter of the cable exceeds the limit value specified in the test method. Test type
Minimum insulation resistance at 70℃
MQ·km
Test method
GB(GB/T)
5023.1 and 5023.2
5023-1
Article number
Inspection and manual test
8. 1. 3.1
3 General purpose single-core soft conductor non-sheathed cable 3.1 Model
227IEC02(RV).
3.2 Rated voltage
450/750V.
3.3 Structure
3.3.1 Conductor
Number of cores: 1 core.
GB 5023. 3—1997
Conductors shall comply with the requirements of the 5th conductor specified in GB/T3956. 3.3.2 Insulation
The insulation extruded on the conductor shall be a PVC/C-type polyvinyl nitride mixture. The insulation thickness shall comply with the specified value in the second column of Table 3. The insulation resistance shall not be less than the specified value in the fourth column of Table 3. 3.3.3 Outer diameter
The average outer diameter shall not be greater than the upper limit specified in the third column of Table 3. 3.4 Test
The inspection and test specified in Table 4 shall be used to check whether the requirements of 3.3 are met. 3.5 Guidelines for use
In normal use, the maximum temperature of the conductor is 70 °C. Note: Other guidelines are under consideration.
Table 3227 General data of IEC02 (RV) type cable Nominal conductor cross section
Specified value of insulation thickness
Upper limit of average outer diameter
Minimum insulation resistance at 70°C
0.004 6
Electrical performance test
Conductor resistance
2500V voltage test
Insulation resistance at 70°C
Structural dimension inspection
Structural inspection
Insulation thickness measuring plate
Outer diameter measurement
Insulation mechanical properties
Tensile test before aging
Tensile test after aging
Weight loss test
High pressure test
Low temperature elasticity
GB 5023. 3--1997
Table 4227 Test items for IEC02 (RV) type cable Test items
Insulation low temperature bending test
Insulation low temperature tensile test\
Thermal shock test
Non-flame retardation test
1) Applicable only when the cable outer diameter exceeds the limit value specified in the test method. Test type
Test methodwwW.bzxz.Net
GB(GB/T)
Single-core solid conductor non-sheathed cable with conductor temperature of 70°C for internal wiring4
4.1 Model
227 IEC 05(BV)
4.2 Rated voltage
300/500 V.
4.3 Structure
4.3.1 Conductor
Number of cores: 1 core
The conductor shall meet the requirements of the first type of conductor specified in GB/T3956, 4.3.2 Insulation
The insulation extruded on the conductor shall be PVC/C type polyvinyl chloride mixture. The insulation thickness shall comply with the value specified in column 2 of Table 5. The insulation resistance shall not be less than the value specified in column 4 of Table 5. 4.3.3 Outside diameter
The average outside diameter shall not be greater than the upper limit value specified in column 3 of Table 5. 5023.2
5023.1 and 5023.2
Document number
Inspection and manual test
8. 1. 3. 1
Conductor nominal cutting area
4.4 Test
GB 5023. 3—1997
Table 5227Comprehensive data of IEC05 (BV) type cableInsulation thickness specified value
Average outer diameter upper limit
The inspection and test specified in Table 6 shall be used to check whether it complies with the requirements of 4.3. Guidelines for use
In normal use, the maximum temperature of the conductor is 70℃. Note: Other guidelines are under consideration.
227IEC05(BV) type cable test items table 6
Electrical performance test
Conductor resistance
2000V voltage test
Insulation resistance at 70℃
Structural dimension inspection
Structural inspection
Insulation thickness measurement
Outer diameter measuring plate
Insulation mechanical properties
Tensile test before aging
Tensile test after aging
Loss of mass test
High temperature pressure test
Low temperature elasticity
Low temperature bending test of insulation
Thermal shock test
Non-flame retardation test
5 Single-core soft conductor non-sheathed cable with conductor temperature of 7D C for internal wiring 5.1 Type
227IEC 06(RV).
5.2 Rated voltage
300/500 V.
5.3.1 Conductor
Number of cores: 1 core.
Test type
Minimum insulation resistance at 70 ms
MQ·km
Test method
GB(GE/T)
5023. 1 and 5023. 2
Article number
Inspection and manual test
8. 1. 3.1
GB5023.3--1997
Conductors shall comply with the requirements for the fifth type of conductors specified in GB/T 3956. 5.3.2 Insulation
The insulation extruded on the conductor shall be a mixture of PVC/C-type polyvinyl chloride. The insulation thickness shall comply with the value specified in column 2 of Table 7. The insulation resistance shall not be less than the value specified in column 4 of Table 7. 5.3.3 Outer diameter
The average outer diameter shall not be greater than the upper limit specified in column 3 of Table 7. Table 7227Comprehensive data of IEC 06 (RV) type cableConductor nominal surface
5.4 Tests
Insulation thickness specification
Average outer diameter upper limit
The requirements of 5.3 shall be checked by the tests and tests specified in Table 8. 5.5 Guidelines for use
In normal use, the maximum temperature of the conductor is 70°C. Note: Other guidelines are under consideration.
227Test items for IEC06 (RV) type cable
Electrical performance test
Conductor resistance
2000V voltage test
Insulation resistance at 70'C
Structural dimension inspection
Structural inspection
Insulation thickness measurement
Outer diameter measurement
Insulation mechanical properties
Tensile test before aging
Tensile test after aging
Weight loss test
High temperature pressure test
Low temperature elasticity
Test items
Low temperature insulation bending test
Thermal shock test
Non-flame retardation test
Test type
Minimum insulation resistance at 70℃
Mn·km
Test method
GB(GB/T)
5023-2
5023. 1 and 5023. 2
Article number
Inspection and manual test
8. 1. 3.1
GB 5023.3—1997
6 Single-core solid conductor non-sheathed cable with a conductor temperature of 90°C for internal wiring 6.1 Model
227IEC 07 (BV-90).
6.2 Rated voltage
300/500V.
6.3 Structure
6.3. 1 Conductor
Number of cores: 1 core.
The conductor shall comply with the requirements of the first type of conductor specified in GB/T 3956. 6.3.2 Insulation
The insulation extruded on the conductor shall be PVC/E type polyvinyl chloride mixture. The insulation thickness shall comply with the specified value in the second column of Table 9. The insulation resistance shall not be less than the value specified in column 4 of Table 9. 6-3.3 Outer diameter
The average outer diameter shall not be greater than the upper limit value specified in column 3 of Table 9. Table 9227Comprehensive data of IEC07 (BV-90) type cableConductor nominal cross section
6.4Test
Specified value of insulation thickness
Upper limit of average outer diameter
The test and test specified in Table 10 shall be used to check whether it complies with the requirements of 6.3. 6.5Guidelines for use
In normal use, the maximum temperature of the conductor is 90 ℃, and the minimum insulation resistance at 90 ℃
Mn·km
When the cable is used in an environment that prevents thermoplastic flow and allows a reduction in insulation resistance, the PVC mixture that can be used continuously at 90 ℃ can be increased to 105 ℃ under the premise of shortening the total working time. Note: Other guidelines are under consideration.
Table 10227Test items for IEC 07 (BV-90) type cableNo.
Electrical performance test
Conductor resistance
2 000 V voltage test
Continuous resistance at 90°C
Structural dimension inspection
Structural inspection
Insulation thickness measurement
Outer diameter measurement
Test items
Test type
GB (GB/T)
5023-1 and 5023. 2
5023-2
Article number
Inspection and manual test
Absolute mechanical properties
Tensile test before aging
Tensile test after aging
Loss of mass test
High temperature pressure test
Test items
Low elasticity
Insulation low temperature bending test
Thermal shock test
No flame retardancy test
Thermal stability test
GB 5023. 3—1997
Table 10 (end)
Test type
7 Single-core soft conductor non-sheathed cable with a conductor temperature of 90°C for internal wiring 7.1 Model
227IEC08 (RV-90)
7.2 Rated voltage
300/500 V.
7.3 Structure
7. 3. 1 Conductor
Number of cores: 1 core.
The conductor shall comply with the requirements of the 5th type of conductor in GB/T3956. 7.3.2 Insulation
The insulation extruded on the conductor shall be a PVC/E type polyvinyl chloride mixture. The insulation thickness shall comply with the value specified in the second column of Table 11. The insulation resistance shall not be less than the value specified in the fourth column of Table 11. 7.3.3 Outer diameter
The average outer diameter shall not be greater than the upper limit specified in column 3 of Table 11. Test method
GB(GB/T)
2951-6
Table 11227Comprehensive data of IEC08(RV-90) type cableConductor nominal surface
7.4 Test
Insulation thickness Specified value
Average outer diameter upper limit
The inspection and test specified in Table 12 shall be used to check whether the requirements of 7.3 are met. 7.5 Guidelines for use
Article number
8. 1. 3. 1
Minimum insulation resistance at 90℃
In normal use, the maximum temperature of the conductor is 90℃GB5023.3—1997
When the relay is used in an environment that prevents thermoplastic flow and allows for reduced insulation resistance, PVC mixtures that can be used continuously at 90°C can have their operating temperature increased to 105°C while shortening the total operating time. Note: Other guidelines are under consideration.
Table 12227IEC08
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