Vertical cables for high-rise buildings
The vertical power supply system of high-rise buildings requires special hanging cables. These cables adopt a reinforced structural design and can withstand the tensile stress caused by their own weight. The conductor is made of annealed copper wire to enhance flexibility and electrical conductivity. The insulation layer is made of cross-linked polyethylene material to ensure electrical stability under heavy load conditions. The cable sheath is made of halogen-free flame-retardant materials to meet the fire protection requirements of high-rise buildings. The new type of vertical cable also integrates optical fiber units, achieving the integration of power transmission and monitoring functions. Special fixing devices and stress relief designs are required during installation.
2. Data composite cables for intelligent buildings
Modern intelligent buildings require data composite cables for transmitting multiple signals. This type of cable adopts a layered shielding structure, integrating power lines, data lines and control lines within a single sheath. Each pair of twisted wires has an independent aluminum foil shield, and the entire pair is also shielded by a braided copper mesh to ensure the quality of signal transmission. The cable sheath is made of low smoke and halogen-free materials, meeting the safety requirements of buildings. When installing, pay attention to the limit of the small bending radius to avoid signal attenuation. The data composite cable supports Gigabit Ethernet transmission and provides 48V DC power supply simultaneously.
3. Waterproof cables for underground pipe galleries
Cables used in urban utility tunnels require special waterproof performance. This type of cable adopts a metal sheath or composite sheath structure, with waterproof glue filled in the gaps between the conductors. The insulation layer is made of cross-linked polyethylene material to ensure electrical performance in a humid environment. The outer sheath is made of corrosion-resistant polyethylene material to resist the erosion of underground chemical substances. The cable design takes into account long-term operational reliability and has passed the 2000-hour salt spray test and waterproof test. When installing, dedicated waterproof joints are required, and a well-designed drainage system should be established within the pipe gallery.
4. Fire-resistant cables for fire protection systems
The cables of the fire protection system must meet strict fire resistance requirements. This type of cable uses a mica tape fire-resistant layer and special heat insulation materials to ensure the circuit remains intact for more than 3 hours in a 950℃ flame. The conductor is made of tin-plated copper wire to prevent oxidation at high temperatures. The outer sheath is made of halogen-free flame-retardant materials to prevent the generation of toxic smoke. The cable has passed a complete fire resistance test, including additional tests such as impact and water spray. When installing, it is necessary to avoid heat sources and use dedicated fireproof cable trays and sealing devices.
