The use of cable tray we will see in some laying of cable field occasions, mainly play a role in cable maintenance, some people will worry that if the cable is damaged, the cable tray is not also on fire, in fact, the bridge has fire performance. So what is the fire standard of shandong cable bridge?
Fireproof cable tray is mainly based on the national standard of fireproof cable. The thickness of the fire protection layer must be greater than or equal to 1mm, and the fire resistance should be 30 minutes. This is the standard of fire retardant coating for fire retardant cables. The fireproof material is steel, and the fireproof cable is also covered with fireproof material.
Try to choose the cable tray made of steel or non-combustible flame retardant materials. Fireproof cable tray adopts steel shell, double layer fireproof cover and inorganic fireproof box. The thickness of insulation layer is 25mm evenly, the double cover is ventilated and heat dissipated, and the interior is sprayed with fireproof paint. The fireproof cable tray expands in the event of a fire. During the 60 minute fire test, the cable was not damaged and the supporting structure was in good condition.
The highest standard for fireproof cables is the British standard bs6387. When laying fire Bridges with ordinary cables, pay attention to the following points:
The outer layer is coated with fire retardant paint. After a fire, the fireproof bridge does not burn, thus preventing the fire from spreading. With excellent fire retardant effect, with fire, oil resistance, corrosion resistance, non-toxic, pollution-free characteristics. In fact, the bridge itself was not on fire. It's just a fire. Therefore, fire-resistant cables are now used in many projects to save cable trays and maintenance costs.
Fireproof bridge is sprayed on the surface of ordinary bridge with a layer of fireproof coating, which plays the role of fire prevention and flame retardant. Fire retardant coating fire retardant principle, fire bridge protection thickness according to JB/T10216-2000 "electric control distribution" "cable bridge" table 10 requirements, coating is greater than 12μm, hot dip coating is greater than 65μm, spraying layer is greater than 50μm, fire resistance is greater than 500μm, can be measured by thickness meter.
In addition, the fireproof ability of cable tray is rooted in its material and manufacturing process, and the waterproof ability of different materials and different manufacturing processes is different. Therefore, the standardized setting of the fireproof cable tray of Shandong cable tray manufacturer is particularly important, which can make the fireproof cable tray more unified and reliable.