[Chai Jin cable tray to recommend the star product - Bridge] cable tray Description: Cable tray tray tray cable bridge is petroleum, chemical, light industry, telecommunications and other aspects of the application of the most widely used one. It is light weight, load, attractive appearance, simple structure, easy installation, and other advantages. It shall apply to the installation of cable tray power cable specifications, but also for control cable laying. [Chai Jin cable tray to recommend the star product - the bridge] 1.7 different voltage cables for different purposes should not be laid in the same layer of cable tray: (1) 1kV and above and below 1kV cables: (2) the same path power to a load of double-circuit cable; (3) emergency lighting and other lighting cables: (4) power, control and telecommunications cables. [Chai Jin cable tray to recommend the star product - bridge] (2) ladder to the tray unit resistance values ??in Table 2. Table 2 in units of resistance ladder tray (3) cable channel unit resistance values ??in Table 3 (4) When the cable tray installation and connection process as a whole, the ladder each side (or each cable channel) of resistance: R = L (r + 1 / 3r ') where: R-- ladder side, i.e., (cable trays) Length total resistance (mΩ); r-- ladder side resistance per unit length (mΩ / m) r' - Direct plate bolt contact resistance. Standard cable tray, cable tray known manufacturers Chai Jin (certified), provided by the Tianjin, Hebei Chai Jin cable tray cable tray Limited. Chai Jin Tianjin cable bridge Limited (www.tjcjdlqj.com) is Tianjin, metal building materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chai Jin leader in cable tray with the staff warmly welcome all inquiries negotiations to create Chai Jin cable tray a better future.