Cables for fire alarm systems
Fire-resistant cable with low smoke and gas emission is the best option for installing a fire alarm. Such cables ensure the functionality of fire, security, warning, evacuation and other systems in the event of a fire. They can be laid inside and outside buildings, but in the latter case the cables must be protected from atmospheric influences and solar radiation.
The main role of maintaining the operability of fire alarm cables (fire-resistant) in fire conditions is ensured by the use of ceramic-forming silicone rubber as insulation.
At high temperatures that occur during a fire, the resulting silicon dioxide remains on the conductor in the form of an electrical insulating layer. Thanks to this property, the cable continues to conduct electric current in fire conditions.
Cable products for the installation of fire protection systems have a number of undeniable advantages. These cables:
- do not spread fire when laid in groups;
- have a high level of fire resistance;
- have low oxidative activity;
- emit a minimum amount of smoke and gaseous combustion products;
- during a fire they remain operational for 30–180 minutes (depending on the brand).
Thanks to these qualities, fire-resistant cables remain operational for a long time - sufficient to evacuate people even from large multi-storey buildings.