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Branch cable is a new generation of middle-and-low-voltage electricity-supplying wire system successfully developed by electric power system in a few advanced industrial countries in the late 1990s. The advantages of being safe and trustworthy in electricity supply, low-cost to use, easy to install, needing low environmental requirements and no maintenance makes it popular and widely applied.
According to promising development of branch cable and the reform of the power industry, our company has employed relevant senior engineers and experts, under whose guidance we have developed "Chongchao" brand branch cable by absorbing foreign advanced technology and summarizing the domestic advanced experience.
due to its reasonable structure, advanced technique, strict inspection and a higher level of quality than the other products in the same line, "Chongchao" brand YFD branch cable can be widely used in electricity distribution systems of residential, high-rise office buildings, tunnels, hotels, hospitals, shopping malls etc, and can also be used in the lighting systems that have requirements for branches in the trunk. (Roads, bridges, tunnels and airport runways).
the main characteristics of YFD series branch cable
1, insulation resistance is over 200 M Ω.
2, insulation pressure endurance is over 3.5 kv/5min.
3, the allowable long-term working temperature for PVC insulated cable is 70 ℃, XLPE insulated cable up to 90 ℃.
4, the auto off time of the sheathing of fire-retardant branch cable is less than 12 s, which complies with the requirements of GB/T19666-2005.
5, the fire-resistant type not only can supply power under the normal working conditions, but also can maintain the normal operation for 90 min in case of fire, which meets the requirement of GB/T19666-2005.
6, it is well endurable to corrosion of inorganic halogen, oil, alkaline, acids and organic solvents.
7, XLPE branch cable has excellent thermal stability and ageing resistance.
1、 Advantages of the FYD series branch cable
a good reliability in power supply
1, the trunk cable conductor has no joints and a good continuity, thus reducing possible failures.
2, all branch joints are made mechanically, thereby connecting joints are of so good quality and the contact resistance is so weak that they are not expanded by heat and contracted by coldness.
3, the branch joints finish sheathing in a short period of time to avoid the exposing of copper conductor at the joint in the air, which causes the change of contact resistance.
Evidently reducing electricity distribution costs
1, compared with the cable slot transmission, it can reduce the construction cost and has high technical and economic indicators and significant comprehensive economic benefits.
2, branches with no joints can be made within a certain length scope in accordance with designing requirements.
many varieties and specifications, freely chosen and arbitrarily combined
1, the main cable from 10 mm2 to 500 mm2 and the branch cable from 10 mm2 to 240 mm2 can be freely chosen and combined.
2, the cable has many varieties such as VV, ZR-VV, NH-VV, YJV, ZR-YJV, NH-YJV, which can be chosen accordingly.
3, the branch joints can set arbitrary positions for branches according to the need of floors, tunnels, forks in a road, highway lights.
Low requirements of installing environment, convenient construction
1, with no requirements on the space size of land building, it occupies a small building area and is easy, convenient and labor-saving to be installed.
2, the length of branches can be settled according to the load use requirement, thus reducing transferring junction boxes. Branch wires for lighting can be directly laid, which can save such items as bracket and reduce investment.
3, it can be laid in an appended manner, which requires the conductor directly connect with load distribution counter (box) through the branch point.
4, it can work in bad environment and can meet the requirements of being flame retardant and fire-resistant.
5, the small bending radius of the branch wire reduces difficulties in installation and the cost of materials, and also narrows the space dimension.
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