Fire-resistant and flame-retardant wire and cable
Fire-resistant and flame-retardant wire and cable
Fire-resistant and flame-retardant cables can maintain the integrity of the circuit in the event of a fire and ensure the functional safety and normal operation of key emergency systems. It is widely used abroad for fire alarm systems, smoke detection systems, emergency lighting power systems and public broadcasting systems in large shopping malls, hospitals, offices, stations, airports, residential buildings and other buildings.
Features and uses
Fire-resistant and flame-retardant cables can maintain the integrity of the circuit in the event of a fire and ensure the functional safety and normal operation of key emergency systems. It is widely used abroad for fire alarm systems, smoke detection systems, emergency lighting power systems and public broadcasting systems in large shopping malls, hospitals, offices, stations, airports, residential buildings and other buildings.
Feature
1. Compared with traditional fire-resistant and flame-retardant cables, the amount of acid gas smoke is less, and its fire-resistant and flame-retardant properties are greatly improved, especially when burning, accompanied by water spray and mechanical shock and vibration, the cable can still maintain the integrity of the line properties (that is, the line works properly).
2. Compared with inorganic mineral insulated cables, it also has the following significant advantages:
a. The new type of fire-resistant and flame-retardant cable adopts a twisted or twisted structure, which can significantly improve the clarity and transmission speed of data transmission.
b. Due to the use of shielding structure, the anti-interference performance is greatly improved, especially in the frequency range of 1-100MHz, the attenuation can be reduced by 30-35db.
c. Since the core-to-core and core-to-shield capacitances of the newly developed cable are significantly reduced, longer cables can be used in the fire alarm circuit, that is, the installation length is not limited. Here, the low capacitance of the cable is a very valuable performance parameter when installing the line.
Main performance indicators
1. Rated voltage: 300/500v;
2. Working temperature: -40°C--+90°C (can not bend when the temperature is lower than 0°C);
3. Minimum bending radius: 6 times the outer diameter of the cable.
4. Circuit Integrity Fire Test: Pass BS6387 Class C, W, Z; Code C means: burn at 300 volts level at 950°C for 3 hours without breakdown. Code W means: apply 300 volts at 650°C and burn for 15 minutes, then pour water and burn for 15 minutes without breakdown. Code Z means: apply a voltage of 300 volts at 950 ° C while burning and mechanical shock every 30 seconds without breakdown for 15 minutes.
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