1. Mineral insulated cables are made entirely of inorganic materials, are non-flammable, and produce no toxic or harmful gases. They are truly environmentally friendly and safe, eliminating inherent safety hazards inherent in the cables and reducing unnecessary personal injury. Large amounts of smoke and toxic gases are extremely corrosive to computer control systems and communication systems.
2. Mineral insulated cables resist aging and have a lifespan of over 50 years, requiring no maintenance or replacement, and can last as long as the building. Manufacturers can sign contracts guaranteeing 50 years of undamaged service in the absence of human intervention. Fire-resistant cables, on the other hand, are prone to aging and have a short lifespan. They require frequent maintenance and replacement after a period of use, resulting in high ongoing costs.
3. Mineral insulated cables are classified as fire-resistant cables, offering a higher level of protection than fire-resistant cables. In a one-hour simulated real-world fire cable performance test conducted by the Sichuan Fire Research Institute of the Ministry of Public Security, exposed mineral insulated cables maintained their ability to power electrical equipment. They also withstood the impact of a falling heavy object and the impact of water spray, restoring the relevant power supply equipment to normal operation. Experiments have shown that mineral insulated cables can withstand temperatures of 950-1000°C for up to three hours without damage, while fire-resistant cables, when laid bare, in conduits, or exposed on fire-resistant bridges, can sustain power for less than 30 minutes.
4. High-temperature resistance: The cables can withstand long-term use at temperatures up to 250°C without copper oxidation. GB/T16895.15-2002 stipulates that mineral insulated cables operate at temperatures up to 105°C, while fire-resistant cables can reach up to 90°C under special conditions.
5. Mineral insulated cables have a significantly greater current carrying capacity than fire-resistant cables, reducing the need for at least one to three equal cross-sections. This reduces the space required for installation and the weight of mineral insulated cables. When laid in bundles, current carrying capacity calibration is not required.
6. Mineral insulated cables are waterproof and corrosion-resistant, suitable for use in water and other harsh environments. They also possess a certain strength and resistance to mechanical damage.
7. The copper sheath of mineral insulated cables can be used as PE conductor, saving wire and reducing project costs. The cable has a small bending radius and is easy to bend.
8. Mineral insulated cables can be laid openly without any protection, eliminating the costs of conduit, fire-resistant bridges, coatings, and construction. However, fire-resistant cables increase other auxiliary costs for fire protection lines by at least 20%.
Product Standards:
GB13033.1-3-91 Mineral insulated cables and terminals for rated voltages up to 750V
GB/T16895.15-2002 Selection and installation of electrical equipment for electrical installations in buildings, and current carrying capacity of wiring systems.
99D163 Ministry of Construction Standard Atlas "Laying of Mineral Insulated Cables"
