Detailed explanation of fireproof bridge products
Fireproof Cable Tray is a cable support system that can maintain structural integrity and smooth wiring under fire conditions. It is mainly used in places with high fire protection requirements such as fire power distribution, emergency lighting, and data centers. Its core characteristics are long fire resistance time (usually ≥ 60 minutes), low smoke and halogen-free, and resistance to high temperature deformation.
1. Core technology of fireproof bridge frame
(1) Fire prevention principle
(2) Fire resistance rating standard
China GB fire resistance time: 60/90/120 minutes Test conditions: GB/T 8624-2012
2. Key performance parameters
Fire resistance time - ordinary bridge frame: not fireproof | fireproof bridge frame (typical value): ≥ 60 minutes (EI60)
Smoke density - ordinary bridge frame: with smoke | fireproof bridge frame (typical value): light transmittance ≥ 60% (low smoke)
Toxicity index - ordinary bridge: halogen containing | fireproof bridge (typical value): halogen-free (combustion gas pH ≤ 4.3)
Load bearing capacity - ordinary bridge frame: conventional load bearing | fireproof bridge frame (typical value): reinforced structure (+20% load)
Fireproof bridge is a key facility to ensure continuous power supply during a fire, and the selection should focus on:
1. Fire resistance time (matching the building's fire rating);
2. Environmental adaptability (humidity/corrosion/explosion-proof requirements);
For high-end scenarios such as nuclear power plants, it is recommended to choose a fully enclosed bridge with stainless steel substrate and composite fireproof board.
