1. The main difference between WDZ cable and WDZN cable is that the conductor of WDZN fire-resistant cable is wrapped with a layer of mica tape to keep the cable energized normally for a period of time in case of combustion.

2. The main feature of WDZ flame-retardant cable is that the cable is not easy to catch fire or the ignition delay is limited to a certain range. It is suitable for power stations, subways, tunnels, high-rise buildings, large industrial and mining enterprises, oil fields, coal mines and other places with high cable laying density.

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 it is on fire. It is applicable to nuclear power plants, subways, tunnels, high-rise buildings and other places related to fire safety and fire rescue.

4. The principle of fire-resistant cable is different from that of flame retardant cable: the flame retardant principle of halogen-containing cable is based on the flame retardant effect of halogen, and the flame retardant principle of halogen-free cable is based on the temperature reduction of distilled water to extinguish the fire; The fire-resistant cable depends on the fire-resistant and heat-resistant characteristics of mica material in the fire-resistant layer to ensure that the cable can work normally in case of fire.

5. The price of WDZ cable is 10-20% lower than that of WDZN cable. It depends on the process and cost price of each cable factory.