[Chai Jin cable tray to recommend the star product - bridge] install cable tray installation, refer to the standards issued by the China Architecture Design & Research JSJT-121 National General Building Standard Design - Electrical equipment standards Atlas "cable tray installation" 04D701 -3. Eight, the design requirements 1, the bridge system path floorplan; 2, about the cross-sectional view of the bridge system. 3, the bridge system uses corrosion-resistant materials and the necessary straight, elbow, schedules branch (hanging) the size and number of racks and the necessary instructions, connecting plate and screws, headgear according to the above requirements fully serviced by the manufacturer. 4, non-standard technical instructions or diagrams special requirements. 5, within the scope of a limited budget, the design needs to meet the safety requirements. [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, West fire bridge, in addition to meeting 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, strong electrical fire bridge, 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 -] bridge cable bridge design uses all have to follow a certain formula, introduced the following specific formula: the design calculations, the actual load capacity if the cable bridge with G Total said: then: G total = n1g1 n2g2 n3g3 ...... formulas: g1 g2, g3 ...... are various models of the inner tray cable weight per unit length. Unit (kg / m) n1, n2, n3 is the number of the same model specification cable. Strong electrical fire tray | Chai Jin cable tray (Online) | Fengtai fire bridge provided by the Tianjin 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.