RTTZ Flexible Mineral Insulated Fire-Resistant Cable Product Details The "Flexible Fire Barrier Flame Retardant Fire-Resistant Wire and Cable" independently developed by the group in 2009 obtained an exclusive invention patent certificate issued by the State Intellectual Property Office in 2013. Since its full promotion and market launch in 2013, the product has received unanimous praise from a wide range of users. Applications: 1. Power supply for firefighting equipment and fire elevators in various buildings; 2. Power supply for equipment and lighting systems in important buildings or densely populated structures, such as convention centers, exhibition centers, hotels, airports, hospitals, shopping malls, parking lots, and other 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 critical locations, such as petrochemical plants and coal mines; 5. Power supply for equipment in environments requiring high cleanliness and hygiene, 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. Flexibility: The cable conductors utilize mature stranding technology, and the sheath is made of specially processed soft copper, providing resistance to mechanical impact while maintaining flexible bending characteristics. This avoids the common issues of terminal connections and delivery lengths encountered with rigid mineral insulated cables like BTTZ during design and installation. 2. Fire Resistance: Both the conductor and sheath are made of copper, which has a melting point of 1080°C. The insulation and other auxiliary materials use minerals with a melting point as high as 1375°C or above, enabling the product to meet the standards of GB12666.6 and BS6387. 3. Low Smoke: Smoke emission tests conducted according to IEC1034 and GB/T17651.2-1998 (determination of smoke density of cables and optical cables under specific burning conditions) show a light transmittance of over 80% (standard requirement is 60%). 4. Halogen-Free: Since the insulation and sheath of the mineral cable are made of inorganic materials without conventional PVC, no acidic gases are produced even under fire conditions. Tests according to GB/T17650.2-1998 (test on gases evolved during combustion of materials from cables) show a pH value of 5.0 or higher (standard requirement ≥4.3) and a conductivity of around 1.0 (standard requirement ≤10.0). 5. High Temperature Resistance: The cable can operate long-term in environments up to 125°C, replacing low-smoke halogen-free flame-retardant cables rated for 125°C. It can also operate short-term at 1080°C in emergencies. 6. Corrosion Resistance: The cable insulation uses inorganic mineral materials, requiring no additional measures during installation. 7. High Current-Carrying Capacity: Compared to cables of the same cross-section, conventional cables often fail due to insulation issues during overload or short circuits, where conductors heat up and insulation deteriorates, leading to short circuits. The mineral insulated fire-resistant cable uses insulation with a melting point of 1375°C, resisting aging or delaying it in the short term, allowing higher current transmission and greater overload tolerance. 8. High Mechanical Strength: YTTW (BTTE)/NG-A, BTLY (BTLE) copper, aluminum, and other metal-sheathed mineral insulated fire-resistant cables have metal sheaths with high melting points, providing strong resistance to mechanical impact under fire conditions. BBTRZ non-metallic flexible isolated fire-resistant cables feature a unique isolation layer material that forms a honeycomb-like rigid structure during combustion, effectively resisting external mechanical impact. 9. Customizable Length: As this product series consists of flexible mineral insulated fire-resistant cables, they can be coiled onto cable reels for packaging, inherently allowing unlimited manufacturing lengths. Thus, the factory can supply products based entirely on the design length requirements provided by customers. 10. Stable Insulation Performance: The unlimited length of the product eliminates the need for joints due to insufficient length during installation. Fewer joints mean higher insulation performance and reduced susceptibility to moisture. Traditional BTTZ joints are more prone to moisture. Product Specifications: Model: YTTW, RTTZ, BTTE Voltage Rating: 0.6/1kV Specifications: 1×1.5~1×630mm2 2×1.5~2×400mm2 3×1.5~3×400mm2 4×1.5~4×400mm2 5×1.5~1×400mm2 3×2.5+1×1.5~3×400+1×240mm2 4×2.5+1×1.5~4×400+1×240mm2 3×2.5+2×1.5~3×400+2×240mm2 4×2.5+2×1.5~4×400+2×240mm2