Under different environmental conditions, outdoor cables can be laid in a variety of ways, such as pipe, direct burial, overhead, and so on. Outdoor weak electric cable laying method Daquan.The laying of outdoor cables should meet the following conditions:The bending radius of the cable is greater than 15 times of the diameter; the power cable should be separated from the signal and control wires; the outdoor equipment should be connected to the cable, because the wiring is connected from the lower part of the equipment; the cable is selected according to the required length of each segment to...
发布时间:
2019
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04
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16
Browse times：43
Check the insulation performance of the cable and verify that the insulation properties of the supplier are stable. How to check the insulation of the cable?For large-volume cable products, sampling inspection methods can be used to check the tensile strength, elongation at break, dielectric strength, volume resistivity, volume resistivity, oxygen index and density of the product.Check the parameter data on the insulation package of the circuit. The national standard genuine circuit insulation package has clear indication: the name of the manufacturer, the type and name of the material, the da...
发布时间:
2019
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04
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16
Browse times：129
The service life of the cable has an important impact on the safety of the cable system. The service life of the cable mainly depends on the oxidation induction period of the sheath material. Although the effective use period of the ordinary cable is theoretically 20 years, the actual service life is far more than the actual service life. this. The cause of cable aging in life is that the insulation is reduced and the breakdown is caused. The insulation of the conductor cable is reduced, which is the fuse that causes the cable to be physically damaged and the life is shortened.。What are the fa...
发布时间:
2019
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04
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16
Browse times：114