GB/T 3048.10-1994 Test methods for electrical properties of wires and cables - Spark test for extruded anti-corrosion sheaths

This standard specifies the test equipment, sample preparation, test steps, test results and evaluation of the spark test of extruded anti-corrosion sheath. This standard is applicable to the inspection of the sealing of the anti-corrosion sheath extruded on the outside of the metal sheath or metal armor layer. GB/T 3048.10-1994 Electrical performance test method of wire and cable Spark test of extruded anti-corrosion sheath GB/T3048.10-1994 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Test methods for electrical properties of electric cables and cables
Spark test of extruded anti-corrosion protective sheaths
GB/T 3048.10--94
Replaces GB 3048. 10--82bzxZ.net
Test methods for determining electrical properties of electric cables and wiresSpark of extruded anti-corrosion protective sheaths1 Subject content and scope of application
This standard specifies the test equipment, sample preparation, test steps, test results and evaluation for the spark test of extruded anti-corrosion protective sheaths. This standard is applicable to the inspection of the sealing of anti-corrosion sheaths extruded on the outside of metal sheaths or metal clamping layers. The general requirements, definitions and periodic calibration requirements for the electrical performance test of wires and cables are specified in GB/T3048.1. 2 Reference standards
GB/T3048.1 Electrical performance test methods for wires and cables 3 Test equipment
3. 1 DC spark test machine; or 50 1Iz power frequency spark test machine; or 3 000 Hz high spark test machine. 4 Sample preparation
Cable of the entire manufacturing length.
5 Test steps
5.1 The spark test should be carried out during the process of extruding the corrosion protection sheath, or it can be carried out separately on the spark test machine. 5.2 When using a power frequency or high frequency spark test machine for testing, the metal sheath or armor of the tested cable should be grounded. When using a DC spark test machine for testing, the metal sheath or armor of the tested cable should be connected to the negative pole of the DC power supply. 5.3 The cable corrosion protection sheath shall be continuously passed through the spark test machine, and any point on the surface of the corrosion protection sheath shall be subjected to the test voltage specified in Table 1.
Test type
50 Hz_frequency
3000H high
Jiang: (t is the nominal thickness of the corrosion protection sheath, mm test voltage, kv
Highest test voltage, kv
(2: The spark test voltage of the corrosion protection layer composed of the plastic belt and the plastic sheath. If the user has other requirements, it can be negotiated with the manufacturer. Approved by the State Bureau of Technical Supervision on May 19, 1994 and implemented on January 1, 1995
GB/T 3048.10-94
The breakdown soft number of the test product per unit length (such as per dry meter) is the test result. This standard was proposed by the Ministry of Machinery, Electronics and Industry of the People's Republic of China
This standard is under the jurisdiction of the Shanghai 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 and others. The main drafter of this standard is Xu Yinglin.
This standard was first issued in 1982 and revised for the first time in May 1994
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