As the term is self-explained, “fire-resistant cable” is a cable that allows safe operation for a defined period under flame-burning conditions. FR wires are widely used in the commercial sector to avoid fire damage to the asset and lives. Moreover, fire-resistant cable protects high-rise buildings, subways, underground shopping malls, power stations, and important industrial and mining enterprises from any unpleasant situation related to fire. FR cable controls power supply wires for fire fighting facilities.
A layman understanding of the term “Fire resistant cable”
For a better understanding of a particular cable type, we let you grasp the ability of a cable continues to operate in a fire.
What makes a cable to be fire resistant?
The particular feature depends on two points.
- The property of its component materials
- Its assembly or structure
What is the duration of survival in working conditions?
According to international standards, 15, 30, 60, 90, and 120 minutes of operation in a standardized fire is the duration of survival of a fire-resistant cable.
What is mineral insulated cable?
Fire-resistant cables function better when the mineral insulated cable is used. For instance, made of copper core, copper sheath, magnesium oxide insulation material processing, referred to as MI (mineral insulated cables) cable. MI cable has the quality to extend the survival duration of fire-resistant cable and can sustain under 250 ℃ high temperature.
Features of Fire-resistant MI cable
- Strong corrosion-resistance
- High flow rate
- High mechanical strength
- Small size
- Long life
Why fire resistant cable is highly-priced?
The reason behind the high price is its complicated process. Moreover, it is difficult to construct in the oil irrigation area, wooden public buildings, high-temperature places, and other places where mere negligence can cause unbearable damage to the asset and the lives of laborers, fire-resistant requirements become obligatory. That’s why the economy can accept the circumstance and use fire-resistant cable.
Specifications of the fire-resistant Cable
- Resistant vinyl polyfluoroethylene insulation and sheath for 70℃ and 105℃ both kinds
- Fluoroplastic insulation and sheathing for 220℃ and 260℃ two kinds
- Low-smoke flame-retardant PVC insulation and sheathing: 90℃ and 125℃ both
- Flame temperature 950℃-1000℃ Flame temperature 750℃-800℃
- Burning time 90min (recommended) Burning time 90min (recommended)
- Additional voltage Rated voltage (min. 100V) Rated voltage (min. 100V)
What is the difference between heat-resistant cable, flame-retardant cable, and fire-resistive cable?
When it comes to withstanding high temperatures or even a full-scale fire, we need to comprehend what separates one wire or cable from another.
- Heat resistant cable
It will operate as normal at high temperatures, but may not operate as normal in the event of a fire
- Flame-retardant cable
The particular cable does not operate within fire conditions though, resists the spread of fire into a new area
- Fire-resistive cable
It maintains circuit integrity and continues to work for a specific time under defined conditions Nafees Cables produce Fire Resistant cable that is compliant with the most stringent international regulations. We are enthused to meet specific local standards or customer specifications.