This standard specifies the general requirements, definitions and periodic calibration requirements for electrical performance tests of wires and cables. This standard applies to electrical performance tests of various power cables and wires and cables for electrical equipment. According to the relevant wire and cable standards, the various test methods specified in GB/T 3048.2~3048.16 are also applicable to similar performance tests of other wires and cables and materials. All test conditions not specified in the test method should be specified in the product standard. Electrical performance test methods, except for those clearly specified for parts, are first used as type tests. Unless otherwise specified in the product standard, sampling tests and routine tests should also be used. GB/T 3048.1-1994 General principles for electrical performance test methods for wires and cables GB/T3048.1-1994 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Test methods for determining electrical properties of electric cables and wires
GB/T 3048.1-94
Replaces GB 3048. 1--83
Test methods for determining electrical properties of electric cables and wiresGeneral
1 Subject content and scope of application
This standard specifies the general requirements and definitions for the electrical properties test of electric cables and wires and the periodic calibration requirements for the test equipment. This standard applies to the electrical properties test of various power cables and wires and cables for electrical equipment. According to the relevant wire and cable standards, the various test methods specified in GB/T3048.2~3018.16 are also applicable to similar performance tests of other wires and cables and materials.
Any test conditions not specified in the test method shall be specified in the product standard. The electrical properties test method, except for those clearly specified for components, is first used as a type test. Unless otherwise specified in the product standard, sampling test and routine test should also be adopted.
2 Reference standards
GB/T 3048. 2
GB/T 3048.3
GB/T 3048. 4
GB/T 3048.5
GB/T 3048. 6
GB/T 3048. 7
GB/T 3048. 8
GB/T 3048. 5
GB/T 3018. 10
GB/T 3048. 11
GB/T 3048.12
GB/T 3048. 13
GR/T 3048. 14
Test methods for electrical properties of wires and cables ... |tt||Volume resistivity test of semi-conductive rubber and plastic materials DC resistance test of conductors
Insulation resistance test, galvanometer comparison method
Insulation resistance test·voltage-current method
Tracking test
AC voltage test
Insulation wire core spark test
Extruded anti-corrosion sheath spark test
Dielectric loss tangent test
Partial discharge test
Electrical performance test methods of wires and cables
Electrical performance test methods of wires and cables
Electrical performance test methods of wires and cables
Electrical performance test methods of wires and cables
GB/T 3048. 15
Impulse voltage testWww.bzxZ.net
DC voltage test
DC spark test on insulated wire core
Electrical performance test methods for wires and cables
Surface resistance test
GB/T 3048. 16
3 Achieve the purpose of regulations
This standard provides the temperature and humidity environmental conditions and environmental condition treatment in each test method. The main purpose of achieving these regulations is:
Make the test results have good repeatability and comparability: a.
Approved by the State Administration of Technical Supervision on May 19, 1994 and implemented on January 1, 1995
GB/T 3048.1-94
b. Make the performance changes of the sample caused by environmental conditions before and during the test be limited to a certain and consistent range of conditions.
4 General provisions of the test
4. Unless otherwise specified in the relevant standards, the test shall be carried out at ambient temperature (room temperature). 4.2 Unless otherwise specified in the product standard, during the type test, the sample shall be subjected to environmental conditioning for at least 16 hours, and the environmental conditions shall be in accordance with the relevant standards.
5 Definitions
5.1 Environmental conditioning of the sample
At a specified temperature and for a specified time, place the sample in an environment with a specified relative humidity or immerse it in water or other specified liquids. 5.2 Standard reference environment
The value measured under any environmental condition can be corrected to the value under a specific environmental condition by calculation. This specific environmental condition is called the standard reference environment.
5.3 Type test (code T)
Type test is a test conducted before manufacturing a certain type of cable specified in the cable standard: the characteristic of type test is that it is generally not repeated after being done once. However, when the materials, structures and main processes used in wires and cables have changed and affect the performance of wires and cables, the test must be repeated; or when there are other regulations in the product standards, such as periodic tests, the test should also be repeated as required.
5.4 Sampling test (code S)
Sampling test is a test in which the manufacturer extracts complete wires and cables from the manufacturing batch and cuts samples or components from them. 5.5 Routine test (code R)
Routine test is a test conducted by the manufacturer on all finished wires and cables. 6 Calibration of test equipment
The test equipment should be calibrated regularly as required to ensure the test accuracy and good use status specified in the standard. Additional explanation:
This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the Upstream Cable Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Shanghai Cable Research Institute of the Ministry of Machinery and Electronics Industry, etc. The main drafters of this standard are Zhu Zhongzhu and Jin Biaoyi. This standard was first issued in 1983 and revised for the first time in May 1994.
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