What is mineral fireproof cable
Mineral fire-rated cables are known as MI cables, and when used for cabling are referred to in domestic practice as mineral or fire-rated cables. Mineral fire-rated cables consist of inorganic materials such as copper conductors, mineral insulation, and copper or other metal jackets.
In 1996, a serious fire occurred in the Channel Tunnel connecting Britain and France, and the mineral-insulated cable system installed in the tunnel withstood the blazing fire and high temperatures even after the reinforced concrete and welded rails were destroyed to provide emergency lighting for the refugees. Mineral fire-rated cables are becoming more and more widely used because they offer quality and performance that cannot be matched by ordinary cables.
Mineral Fireproof Cable Mineral Insulated Cable Manufacturer Fireproof Cable
At present, there are 3 kinds of common fireproof cables in China
Copper core copper sheath magnesium insulated cable: solid copper rods, magnesium insulation, seamless copper sheath. (except external external BTTZ, BTTQ, external external BTTVZ, BTTVQ, WD-BTTYZ)
Flexible inorganic mica tape mineral insulated cable: composed of copper stranded, fluorine mica tape insulation, copper tape longitudinally encapsulated continuous welded sheath. (No external external external external YTTW, RTTZ, external external YTTWV, WD-YTTWY, RTTZV, WR-RTTZY, BTTW and BTTRZ).
Flexible Isolated Aluminium Sheathed Mineral Insulated Cables (NG-A, BTLY):Consisting of copper stranded, gold mica tape insulation, seamless aluminium tube sheathing, oxygen separating filler, fire-resistant insulation, and low-smoke, halogen-free sheathing.
Among the above three kinds of cables, the BTTZ series with the best fire resistance is currently the only internationally recognised mineral insulated cable, with highly conductive solid copper wires as conductors, highly compressed powdered magnesium oxide (MgO) as insulation, seamless copper pipes as sheaths, and modern construction cables and special industrial (metallurgy, chemical, petroleum, etc.) cables manufactured through special processes.
Mineral Fireproof Cable Mineral Insulated Cable Manufacturer
Advantages of fireproof cable
Lifespan up to 100 years;
Does not burn, does not support combustion, does not release toxic gases, does not release zero combustion energy;
Continuous working temperature up to 250, short-term working temperature up to 1083 .
Good fire resistance, the cable can be reused after fire.
Cable terminals and intermediate couplings are installed together with the cable, which improves the reliability of the fire resistance of the cable.
In case of fire, the cable can withstand extremely high temperatures, the impact of falling objects and fire water sprinklers.
The cables can be used at high temperatures.
Waterproof, moisture-proof, oil-proof and corrosion-proof;
There is no ageing and the cable performance is very stable.
The metal sheath of the cable can be used as a grounding circuit.
Suitable for installation environment with good mechanical strength, good bending performance, complex structure and narrow space.
High current-carrying capacity due to the special characteristics of the cable structure.
The outer diameter of the cable is small, easy to install, low comprehensive cost, the cable does not need tube protection. Good explosion-proof performance and good nuclear radiation characteristics;
Electromagnetic shielding performance and electromagnetic compatibility may be good.
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