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Safety and protection of intellectual cable

Information Source:Henan Huadong Cable Co., Ltd Release date:2014-03-08

Safety requirements

1 cable cross each other, the high-voltage cable should be below the low voltage cable. If one of the cable at the cross points before and after 1m within the scope of protection or are separated by a baffle plate in the tube, the minimum allowable distance is 0.25m.

2 cable and pipeline approach or cross, such as thermal insulation, parallel and minimum distance cross are 0.5m and 0.25m.

3 Wear tube protection cable and the railway or road crossing, protection tube shall be extended outside the track or pavement 2m.

4 basic cable and building distance, should make sure that the cable is buried in the water outside the building; wear pipe protecting cables into buildings, protection tube should be beyond the water outside the building.

5 direct buried between underground cables and grounding device should be at 0.25~0.5m; direct buried cable buried deep underground, the general should not be less than 0.7m, and should be buried in the frozen soil layer.

Protective measures

With the rapid development of power cables buried underground engineering, put forward the higher requirements for the cable, cable protection sleeve is the use of polyethylene PE and high quality steel pipe after sandblasting preprocessing, dip coating, heating curing process produced. It is the protection of wire and cable, a kind of the most commonly used electrical insulating tube. Because it has good insulation properties, high chemical stability, no rust, no aging, can adapt to the harsh environment and widely applied.

Use the cable protection sleeve to protect the cable can achieve the following advantages: 1, good corrosion resistance, long service life, and can be used in the wet saline. 2, flame retardant, good heat resistance, can be used in 130 degree heat without deformation, fire is not burning. 3, high strength, high rigidity. Used in buried directly under the road without a protective layer of concrete, can roll fast cable engineering construction schedule. 4, cable protection sleeve both pipe or fittings with certain flexibility, can resist the external stress and settlement of foundation damage. 5, has good performance of anti external interference. 6, the inner wall is smooth, do not scratch the cable. The design adopts a socket connection type, convenient installation and connection. The joints with rubber sealing ring seal can adapt to the thermal expansion and contraction, and prevent sand entering.

Storage method

Cable if stored for a long time, according to the position of cable, should make the following considerations:

1, under the eaves. Cable only when not exposed to direct sunlight or ultra high temperature, standard LAN cable can be applied, recommend the use of pipeline.
2, on the wall. Avoid direct sunlight walls and man-made damage.
3, the pipe (plastic or metal). As in the pipe, pay attention to heat damage and metal pipe plastic pipe.
4, application of suspended / overhead cable. The cable sag and the pressure, to adopt what kind of binding, the cable is Yang High temperature (flame retardant) power cable

Direct sunlight.

5, directly in the underground cable trench laying, the environment is the control of the minimum range. Cable trench installation must be periodically dry or moist degree examination.
6, the underground pipeline. In order to facilitate future upgrades, cable replacement and surface pressure and the surrounding environment isolation, auxiliary pipeline isolation, auxiliary pipeline is a better method. But don't expect to pipeline will always keep dry, it will impact on the cable type selection.

Quality discrimination

The purchase of electricity, how to identify the quality of

The state has explicitly using copper wire should be in new residential. But the copper wire, copper wire is inferior, the copper core selection of recycled copper, contains many impurities, and some poor electrical property of copper wires or even as wire, extremely easy to cause electrical accident. The cable market more varieties, specifications, price confusion, consumers choose difficult. Frequently used in the household decoration alone 2.5 square mm and 4 mm square two copper core prices, the same specifications as a line, because different manufacturers, the price may be a difference of 20%~30%. As for the quality, length is required, consumers are difficult to determine.

According to industry sources: wire is the huge price differences, is because the raw materials used in the production process caused by different. The main raw material for production of electrolytic copper wire, insulation and sheath material. The market of raw materials on the electrolytic copper per ton in 50000 yuan, and the recycling of copper per ton is only 40000 yuan; insulation quality products price per ton of material and the sheath material is in 8000 yuan ~10000 yuan, while the price of defective products is only 4000 yuan per ton ~5000 yuan, more wide spread. In addition, insufficient length, insulator glue content is not enough, but also caused significant price differences. Each disc line length, high-class product is 100 meters, and defective only 90 meters; insulating glue content high-class products accounted for 35%~40%, while the defective products only 15%. By contrast, the consumer is not difficult to see the finished product line sales price differences are caused by the material maoni.

HUADONG Henan Huadong cable group is specialized in the research,development,and production of ABC Cable,Rubber Cable, mv medium voltage power cable,Control/Instrumentation Cable,Mining Cable, Bare Conductor(AAC/AAAC/ACSR/ACS), Huadong Cable Supply the price of 16mm armoured cable,Mc Interlocked Cable, 4 core 240 mm cable price at competitive.
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