fire-resistant cableWire has now become a type of cable in our daily lives. Due to its outstanding safety performance, people are generally more willing to choose this specification of cable. But there are too many types of such cables, how can we choose the corresponding fire-resistant cable specifications and models correctly according to the specific situation. Next, let me introduce you to heat-resistant cables.
1) Fire resistant cross-linked polyethylene insulated and polyvinyl chloride sheathed power cable (NH-YJV): This type of cable can be laid indoors, in tunnels, and in pipelines. The cable itself can withstand certain laying traction, but this specification of cable cannot withstand external forces. Low smoke and low halogen cables are not allowed to be laid in pipelines with magnetic materials. If the cable needs to withstand mechanical external forces, it must be equipped with steel tape armor. In general, this specification of cable is suitable for occasions with special requirements, such as large capacity power plants, nuclear power plants, underground railways, and high-rise buildings.
2) Cross linked polyethylene insulated and polyvinyl chloride sheathed single core cable (YJV): This type of fire-resistant cable specification can also be laid indoors, in tunnels, and in pipelines. The cable product itself can withstand certain laying traction, but the cable cannot withstand external forces. Single core cables of this type are not allowed to be laid in pipelines with magnetic materials. If it needs to withstand mechanical external forces, it is also necessary to install steel belt armor.
3) Flame retardant PVC insulated and PVC sheathed power cable (ZR-VV): This type of cable can be laid indoors, in tunnels, cable trenches, pipelines, and in flammable or severely corrosive places, but its cable itself cannot withstand mechanical external forces. If this fire-resistant cable specification and model product can withstand mechanical external forces, it also needs to be equipped with steel tape armor. The characteristic of this type of cable is that it can automatically remove the fire source in case of open flame combustion. If the time does not exceed 12 seconds, the flame will automatically extinguish.
4) Flame retardant cross-linked polyethylene insulated and polyvinyl chloride sheathed power cable (ZR-YJV): This type of cable product can be laid indoors, in tunnels, and in pipelines. The cable itself can withstand certain laying traction, but the cable cannot withstand external forces. The single core model of this cable is not allowed to be laid in pipelines with magnetic materials. If the cable needs to withstand mechanical external forces, a steel strip armor device must be added. This type of cable can remove the fire source by itself in the event of an open flame and automatically extinguish the fire source within 12 seconds.
5) Fire resistant PVC insulated and PVC sheathed cable (NH-VV): This type of fire-resistant cable specification can also be laid indoors, in tunnels, cable trenches, pipelines, and in flammable or severely corrosive environments, but its cable itself cannot withstand mechanical external forces. If it is necessary to withstand mechanical external forces, a steel strip armor device must be added. This type of cable product is generally installed in places with special requirements, such as large capacity power plants, nuclear power plants, underground railways, and high-rise buildings.
The various models, specifications, and applicable locations of fire-resistant cables have been introduced to everyone by the editor. I hope everyone can get some help after reading. We can only truly utilize fire-resistant cable products by using them correctly according to their specifications and models.