1. Superior high temperature resistance and fire resist […]
1. Superior high temperature resistance and fire resistance
Since the general wire and cable are insulated with organic polymer materials, they are easily carbonized under flame conditions and lose their insulation. Since the main materials of the flexible mineral insulated fireproof cable are composed of mineral compounds, it will not cause a fire by itself, and cannot burn or support combustion. These materials generally have a relatively high melting point above 1500°C. Therefore, fire-resistant cables can perform normal power transmission functions even under flame conditions, and are a true fire-resistant cable.
The mineral insulated flexible fireproof cable truly achieves the effect of burning without short circuit and short circuit without burning. It can supply power normally in sudden fire environment, buy time for on-site personnel to escape, provide power support for rescue and start fire extinguishing equipment, and reduce fire loss and personnel Casualties; secondly, the copper sheath has good conductivity and can be used as a PE ground wire connection, which greatly improves the sensitivity and reliability of grounding protection.
2. Strong overload capacity
Mineral insulated flexible fireproof cable not only has a large current carrying capacity, but also has a strong line overload capacity. According to the relevant electrical design requirements, the surface temperature of the cable is usually not higher than 70℃. If there is no combustible material around, the long-term working temperature of the fireproof cable can reach 250°C
3. Irradiation resistant and non-aging
Mineral insulated flexible fireproof cables use inorganic mineral insulating materials as insulation. Compared with conventional organic insulated cables (YJV, VV), they will not be affected by radiation. The materials will not deteriorate and the insulation characteristics will not change. At the same time, the outer sheath of the cable is The copper embossing form has excellent sealing, moisture-proof and anti-corrosion, and the service life of the cable can reach more than 70 years.
4. High mechanical strength and impact resistance
Metal sheathed isolated flexible fireproof cable The mineral insulation layer of the cable is provided with an aluminum metal layer, which has the effects of temperature insulation, heat insulation, fire prevention and water resistance, and can also prevent objects in the fire environment from hitting the cable insulation In addition, the ceramicized fireproof layer of the cable will form a solid shell at 350℃, which effectively strengthens the protection function of the cable.
6. Green environmental protection features
The cable structure is made of inorganic mineral materials. The cable does not release smoke or toxic gas in the burning flame; the discarded cable can also be recycled and reused without polluting the natural environment. The continuous production length is longer.