Ehang low smoke halogen-free 35KV and below prefabricated branch cables

Product Introduction
Prefabricated branch cables are a new generation of wire and cable products formed by pre-setting several branch cables on the main cable through special equipment and special production processes. It has the characteristics of safe and reliable power supply, convenient installation and maintenance-free, low overall cost and relatively beautiful appearance. The series of prefabricated branch cables produced by Jincheng Wire and Cable Co., Ltd. are mainly suitable for power supply trunks in mid- and high-rise buildings with rated voltage and below, to replace the closed bus duct that is still commonly used in my country. It can be widely used in power distribution systems such as factories, shopping malls, residential areas, office buildings, mines, etc., as well as lighting systems in bridges, tunnels, highways, and airports. This product uses type or type plastic insulated power cables as the main cable and branch cable. The structural form is mainly single core and single branch. There are also single core multi-branch and multi-core multi-branch options. According to user needs, we can also produce prefabricated branch cable products with special properties such as flame retardant, fire-resistant, low smoke and low halogen, low smoke and halogen-free.
Implementation Standards
Refer to the relevant provisions and corporate standards of the "Copper and Aluminum Core Plastic Insulated Power Cables with Rated Voltage and Below" standard.
The main advantages of prefabricated branch cables
1. Excellent power supply reliability
The main cable conductor is continuous and has no joints, reducing failure points
Branch joints are produced centrally in the factory and are quality controlled It is strict and has a complete quality assurance system, which solves the problem of difficult process of making branch joints on site and difficult quality control.
The branch joint has a reasonable structure and is produced using advanced technology. The contact resistance of the branch joint is small and concentrated heating will not occur under a current, which improves the operation quality and service life.
2. Significantly reduce power distribution costs
The prefabricated branch cable system consists of prefabricated branch cables, brackets, clamps, and hanging head cross arms. Compared with using bus ducts, it significantly reduces the project cost and ensures normal operation. The prefabricated branch cable system does not require additional maintenance
Easy and flexible installation
The branch connection does not allow the branch position to be set arbitrarily as needed.
3. Excellent seismic resistance, air tightness, waterproofing and other characteristics
Excellent seismic resistance, general mechanical connection busway joints will loosen after the wall is shaken, and prefabricated branches The cable will not be affected, especially when passing through building settlement joints, no measures are required
With good air tightness and waterproofness, it can supply power normally in a humid environment, and can also be laid in the open air or underground
According to different bosses, prefabricated ground cables can be produced with characteristics such as flame retardant, fire-resistant, low smoke and low halogen, low smoke and halogen-free.
Main technical characteristics
Insulation resistance
Insulation withstand voltage/
The ratio of the pre-branch cable joint surface contact resistance to the reference resistance of the branch cable of equal length is less than
Joint short circuit High strength, the bending rate of the contact resistance ratio after short circuit is less than
Good airtightness and waterproofness, the insulation resistance and insulation withstand voltage when immersed in water meet the requirements of Article 1, the maximum operating temperature of the type cable is ℃, the maximum operating temperature of the type cable is ℃
It has excellent corrosion resistance and can be resistant to corrosion by oil, acid and organic solvents
Other properties of the main cable and branch cables comply with the relevant provisions of the standard.