1. The main difference between WDZ and WDZN cables is that the conductor of WDZN fire-resistant cable is wrapped with a layer of mica tape, so that the cable can maintain normal power supply for a period of time in case of burning.
2. The main feature of WDZ flame-retardant cable is that the cable is not easy to catch fire or the flame delay is only limited to a certain range when it catches fire. It is suitable for power stations, subways, tunnels, high-rise buildings, large industrial and mining enterprises, oil fields, etc. where cable laying is intensive. Coal mines and other places.
3. The main feature of WDZN fire-resistant cable is that in addition to transmitting power under normal working conditions, the cable can still maintain normal operation for a certain period of time when burning. It is suitable for nuclear power plants, subways, tunnels, high-rise buildings, etc. and fire safety Places related to firefighting and lifesaving.
4. The principles of fire-resistant cables and flame-retardant cables are different: the flame-retardant principle of halogen-containing cables relies on the flame-retardant effect of halogen, while the flame-retardant principle of halogen-free cables relies on the precipitated water to lower the temperature to extinguish the fire; fire-resistant cables rely on the flame retardant effect of the fire-resistant layer. The fire-resistant and heat-resistant properties of mica material ensure that the cable will work normally even in the event of a fire.
5. The price of WDZ cable is slightly lower than WDZN cable by 10~20%. This depends on the process and cost price of each cable factory.
