Fire-Resistant Cable
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In modern buildings and industrial facilities, Fire-Resistant Cable are not only the carrier of power transmission, but also a key component in safeguarding life and property. Whether in high-rise buildings, subway tunnels, or petrochemical plants, fire-resistant cables ensure the continuous operation of emergency systems at critical times. This article will provide you with an in-depth analysis of the structure, standards, classification, application scenarios and selection of fire-resistant cables, to help you make a wise choice in the project.
What is a fire-resistant cable?
Fire rated cable is a type of cable designed to maintain the integrity of electrical circuits during a fire. They provide electrical support for critical equipment such as fire pumps, emergency lighting, and alarm systems, even under extreme conditions of heat, flame, and water spray. These cables are typically constructed with copper conductors, clad with mica tape (Mica Tape) as a fireproofing layer, and insulated and sheathed with cross-linked polyethylene (XLPE) or low-smoke, zero-halogen (LSZH) materials. They are designed to extend the operation of critical systems in the event of a fire, buying valuable time for evacuation and fire fighting.
Structural Components of Fire-Rated Cables
A typical fire rated cable consists of the following components:
Conductor: usually made of copper, which has excellent electrical conductivity and heat resistance.
Fireproof layer: commonly used mica tape, which can still maintain structural stability at high temperatures.
Insulation: mostly XLPE or silicone rubber, with good thermal stability and electrical properties.
Sheathing: Common materials include low-smoke, non-halogen (LSZH) or flame-retardant PVC, which produces less smoke and toxic gases when burned.
In addition, some high-end products will also add a steel tape armor (DSTA) layer to enhance mechanical strength and compression resistance.
