Superior fire resistance of mineral insulated cables

Superior temperature and fire resistance

Since ordinary wires and cables are made of organic polymer materials for insulation, they are easily carbonized under flame conditions to lose insulation. Since the main material of the flexible mineral insulated fireproof cable is composed of mineral compounds, it does not cause fire itself, and it is impossible to burn or support combustion. These materials generally have a higher melting point above 1500 ° C, so the fire-resistant cable can play a normal power transmission function even under flame conditions, and is a true fire-proof cable. And can pass the BS6387 C, W, Z test.

The mineral insulated flexible fireproof cable truly achieves the effect of no short circuit, short circuit and no combustion, can supply power normally in a sudden fire environment, gain time for the scene personnel to escape, provide power support for rescue and start fire extinguishing equipment, reduce fire damage and personnel Casualties; secondly, the copper sheath has good electrical conductivity and can be connected to the PE grounding wire, which greatly improves the sensitivity and reliability of the grounding protection.

Strong overload capability

The mineral insulated flexible fireproof cable not only has large current carrying capacity, but also has strong line overload capability. According to the relevant electrical design requirements, the cable surface temperature is usually not higher than 70 °C. If there is no combustible material around, the long-term working temperature of the fireproof cable can reach the overload. 250 ° C.

Good bending characteristics

The traditional rigid fireproof cable (BTTZ) is more difficult to bend. The sharpness of the cable with a bending radius of 6 to 10 times is reduced by the sharp ocean mineral insulated flexible fireproof cable, which reduces the installation layout space, reduces the installation cost, and is easier to lay.

Irradiation resistant, non-aging

The mineral insulated flexible fireproof cable uses inorganic mineral insulating material as the insulation. Compared with the conventional organic insulated cable (YJV, VV), it is not affected by the irradiation. The material will not deteriorate and the insulation properties will not change. At the same time, the outer sheath of the cable is The copper embossed form has excellent sealing, moisture proof and anti-corrosion, and the cable life can reach more than 70 years.

High mechanical strength and impact resistance

The metal sleeve isolated flexible fireproof cable has a layer of aluminum metal on the outside of the mineral insulation layer, which has the effects of temperature isolation, heat insulation, fire blocking and water blocking, and also prevents objects in the fire environment from colliding and damaging the cable insulation. In addition, the porcelain fire-retardant layer of the cable will form a strong shell at 350 °C, which effectively strengthens the protection function of the cable.

Green features

The material of the cable structure is made of inorganic mineral materials. The cable is in the burning flame, does not release smoke, and does not release toxic gases. The discarded cables can also be recycled and reused without polluting the natural environment.

Continuous production length is longer

Due to the continuous mechanized production, whether it is single-core or multi-core cable, its length can fully meet the needs of power supply length, the continuous length can reach more than 1000m, no intermediate connection point is needed, which greatly reduces the safety hazard caused by the connection point of the engineering line.

Reduce investment costs for users

Metal-sheathed, mineral-insulated, flexible fire-resistant cables are less expensive to purchase directly than traditional rigid fire-resistant cables (BTTZ), and the products are more cost-effective. The copper sheath can be used for PE wire grounding. It can replace the 5-core (YJV) cable with 4 cores, and the price difference is greatly reduced. The metal threaded sheath has a certain self-supporting capacity and can be directly laid, eliminating the need to install accessories such as pipes and bridges, which greatly saves installation costs.