BTTVZ Mineral Insulated Fire-Resistant Cable Product Details Introduction Magnesium oxide cable (BTTZ) is a type of fire-resistant cable that uses magnesium oxide as the mineral insulation. In 2018, the company invested heavily in establishing a specialized production line capable of manufacturing long-length magnesium oxide cables (BTTZ). Traditional cables are limited to 50-100 meters per piece, while the new type can reach up to 1000 meters per piece. This significantly overcomes the drawbacks associated with short lengths and numerous joints, greatly reducing project investment costs for users, improving installation speed, and ensuring stable product operation. Applications: 1. Power supply for firefighting equipment and fire-resistant elevators in various buildings. 2. Power supply for equipment and lighting systems in important or densely populated buildings, such as convention centers, exhibition halls, hotels, airports, hospitals, shopping malls, parking lots, and urban complexes. 3. Power supply for equipment in high-temperature environments, such as steel plants, smelters, and glass factories. 4. Power supply for equipment in flammable and explosive environments, such as petrochemical plants and coal mines. 5. Power supply for equipment in clean and hygienic environments, such as hospitals and food factories. 6. Power supply for critical military, defense, aerospace, and satellite base equipment. 7. Power supply for essential equipment in power plants and nuclear power stations. 8. Power supply for modern rail transit lines, such as subways, high-speed rails, and light rails. Key Features and Advantages: 1. Fire Resistance: The cable is composed entirely of inorganic materials, making it non-combustible and incapable of igniting fires. Even under external fire conditions, the cable can continue to operate normally. If the flame temperature remains below the melting point of copper, the cable can be reused after the fire is extinguished without replacement. 2. High Temperature Resistance: Due to the melting point of magnesium oxide insulation being significantly higher than that of copper, BTTZ mineral insulated magnesium oxide cables can operate at temperatures up to 250°C. They can also function temporarily at temperatures close to the melting point of copper (1083°C). 3. Overload Protection: When overloaded, plastic cables may experience insulation heating or breakdown due to excessive current or voltage. For BTTZ mineral insulated magnesium oxide cables, as long as the heat does not reach the melting point of copper, the cable remains undamaged. Even if a momentary breakdown occurs, magnesium oxide at the breakdown point does not form carbides. After the overload is eliminated, the cable’s performance remains unchanged and it can continue to operate normally. 4. High Current-Carrying Capacity: Due to the unique insulation material and structure, BTTZ mineral insulated magnesium oxide cables have a high current-carrying capacity. Compared to traditional plastic cables, they can transmit the same current with one to two smaller cross-sectional grades. 5. Radiation Resistance: Since the cable is made entirely of inorganic materials, its electrical and mechanical properties remain unchanged after exposure to nuclear radiation. 6. Long Service Life: Composed of inorganic materials, the cable does not age and has a minimum service life of several hundred years. 7. Small Diameter and Light Weight: The outer diameter and weight of BTTZ mineral insulated magnesium oxide cables are significantly reduced compared to plastic cables of the same specifications, saving space and facilitating installation. 8. Safety and Environmental Friendliness: The cable is made entirely of inorganic materials and contains no organic substances. Even at temperatures above 1000°C, it produces no smoke, halogens, or toxic gases. 9. High Mechanical Strength: The cable features high strength and toughness, capable of withstanding bending, crushing, and twisting. It can continue to operate normally even when crushed to 1/3 to 2/3 of its original outer diameter. 10. Excellent Bending Performance: After thorough annealing, the cable can be bent repeatedly and multiple times, offering bendability unmatched by ordinary plastic cables. The minimum bending radius is only 2 to 6 times the cable’s outer diameter. 11. Superior Shielding Performance: The copper sheath of the cable serves as an excellent shielding layer, preventing interference from the cable to other cables and blocking external magnetic fields from interfering with itself. o Good Grounding: The copper sheath of the BTTZ mineral insulated magnesium oxide cable acts as a grounding conductor with very low grounding resistance, eliminating the need for a separate grounding wire. o Waterproof, Corrosion-Resistant, and Explosion-Proof: The cable uses a seamless copper tube as its sheath, with the conductor, insulation, and sheath forming a compact, solid structure. This not only protects against water, moisture, oil, and certain chemicals but also prevents the spread of flammable oil vapors, gases, and flames. Product Specifications Model: BTTVZ, WD-BTTYZ Voltage Rating: 750V Specifications: 1×6~1×400mm2 2×1.0~2×25mm2 3×1.0~3×25mm2 4×1.0~4×25mm2