[Chai Jin cable tray to recommend the star product - bridge] bridge fire fire protection zones, you must use steel or non-flammable, fire-retardant materials. I produced a series of cable tray are BJⅢ fire bridge. V. Ground 1, the bridge system should have a reliable electrical connection and ground (only metal tray). 2, while allowing the use of the bridge when the grounding line loop system configuration meets the following requirements. The connection resistance between the ends of the bridge should not exceed 0.00033 ohms, grounding hole should remove the insulation coating. [Chai Jin cable tray to recommend the star product - bridge] support and hanger configuration 1, the indoor branch, hanging a short span generally take 1.5-3m. Outdoor column in the span generally taken 6m. 2, support and hanger configuration on non-linear segment following principles. When the tray width 300mm, except subject to the following conditions, in the middle of a non-linear segment also added support and hanger. 3, multi-set bridge center distance between the layers 200, 250, trough cable tray, 300,350mm. 4, the bridge line segment should remain joints every 50m 20-30mm (metal bridge). [Chai Jin cable tray to recommend the star product - the choice of bridge] bridge 1.1 in the engineering design, the bridge shall be arranged comprehensive comparison based on economic rationality, technical feasibility, operational security, and other factors to determine the best programs, cable tray, also fully meet the construction and installation, maintenance, repair and cabling requirements. 1.2 bridge laying height from the ground level is generally not lower than in 2.5m, Cascade cable bridge, 1.8m following section should be added to protect the metal cover from the ground vertically laid, but laid in the electrical rooms except when. Cable tray laid in the mezzanine level of the troops or the road and less than 2.5m, should take measures to protect the ground. Cable tray | Chai Jin cable tray | cable tray from the Tianjin Datong Chai Jin cable bridge Limited. Chai Jin Tianjin Cable Bridge Co., Ltd. (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.