[Chai Jin cable tray to recommend the star product - bridge] at 1KV and below neutral grounding system, grounding neutral grounding powered devices connected to the system. Cut off the power supply when mounted on the fixed cable tray which sell equipment Xuan, bridge prefects direction of the metal cross-sectional area shall not be less than the specified value. 3, along the full length of the bridge lay another grounding line Cascade cable bridge, each (including non-linear segment) should be at least a little bridge a reliable connection with the grounding line. 4, vibration place for cable tray, at the junction of the grounding site should be installed coil. [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. Tray cable tray cable tray price _ _ Tianjin Songjiang bridge provided by the Tianjin factory Chai Jin Chai Jin cable bridge Limited. Chai Jin Tianjin cable bridge Limited (www.tjcjdlqj.com) strong, credible, in Tianjin metal building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chai Jin cable tray and you hand into the brilliant, for a better future!