Advantages of BTLY Mineral Insulated Cable
1. Fire resistance meets the three requirements of BS6387:
a) No breakdown under 950°C flame for 3 hours;
b) Withstands water spray for 15 minutes at 650°C after 30 minutes (direct immersion is also acceptable);
c) Withstands impact and vibration for 15 minutes at 950°C flame without damage, thus fully meeting the fire resistance standards of BTTZ.
2. This product is available in sizes of 1.5-6 square meters with 3-61 cores, 95-240 square meters with 1-5 cores, and 240-630 square meters with single cores. Lengths can be customized and delivered as whole reels without joints.
1) No additional conduit is required for installation, and the cable offers the same waterproof and impact resistance as BTTZ cable.
2) It offers excellent rodent, ant, and radiation protection, ensuring cable stability, longevity, and durability.
3. Low operating temperature, low line loss, strong overload resistance, long service life, and high safety make them particularly suitable for use in projects with environmentally friendly requirements.
4. Explosion-proof (The highly compacted insulation material in the cable and the cable terminals with specially sealed sleeves prevent steam, gas, and flames from entering the electrical equipment connected to the cable, making them suitable for use in explosion-hazardous areas and for connecting various explosion-proof equipment and devices.)
5. The metal sheath of the corrosion-resistant (BTLY) series mineral insulated cables is highly corrosion-resistant, eliminating the need for additional protective measures for most installations. Even in locations where the cable's metal sheath is susceptible to chemical corrosion or severe industrial pollution, the cable remains safe due to the protection of the outer plastic sheath.
6. High mechanical strength: The cables are rugged and durable, capable of operating even when deformed by one-third of their diameter. Even severe mechanical damage will not compromise their electrical performance. 7. Using aluminum as the primary material for metal tube extrusion instead of copper drawing not only simplifies the process and improves efficiency, but also significantly reduces product costs (aluminum costs only 1/10 of copper). The reason aluminum tubes can replace copper tubes and remain resistant to high-temperature flames is due to the intumescent refractory layer extruded over the tubes. Under the attack of flames, the intumescent layer foams and solidifies, forming a thick barrier that blocks direct flame impact. This not only preserves the integrity of the aluminum tubes but also reduces the heating temperature of the mica tape to below 600°C, undoubtedly improving the insulation stability of the mica tape (the insulation resistance of mica tape increases with decreasing temperature). 3.8 BTLY mineral insulated cables have been widely used in fire-resistant cable systems in many key projects nationwide, including the Shanghai Tower, China's tallest building; the Shanghai Benin Star Hotel; the Phase II Business Office Building (Business Operations Center) of the Industrial and Commercial Bank of China Head Office in Beijing; and the podium and basement projects of Buildings A and B of Beijing Broad Economic Development Construction Co., Ltd. This product has passed testing by the National Fireproof Building Materials Quality Supervision and Inspection Center based on the following criteria:
1) BS 6387:1994, "Performance Requirements for Cables to Maintain Circuit Integrity Under Fire Conditions," including the simple fire test (Category C) per BS 6387:1994 Annex D2: (950°C, 180 min). Under rated voltage, a 3A fuse did not blow.
2) BS 6387:1994 Annex D3, fire test with water spray (Category W): Fire test at 650°C with water spray for 15 min. Under rated voltage, a 3A fuse did not blow. 3) BS 6387:1994 Appendix D4 Fire resistance test with impact (Category Z): Fire at 950°C plus mechanical impact for 15 minutes. When the rated voltage is applied to the specimen, the 3A fuse does not melt.
