Flame-retardant power cable refers to the cable that is burned under the specified test conditions. After the test fire source is removed, the flame spreads only within the limited range, and the residual flame or residual burn can be extinguished by itself within a limited time. The fundamental characteristic is that it may be burnt out in the event of a fire and cannot operate, but it can prevent the spread of fire. In layman's terms, in the event of a fire, the wires can be confined to a local extent without spreading, and other equipment can be saved to avoid further losses.

(1)In the same channel, it is not appropriate to arrange the general cable(such as xlpe 4 core power cable and 0.6/1kv pvc cable) and the flame-retardant cable in parallel.

 (2) The following places or circuits that need to be energized for a certain period of time outside the external fire, the cable to be applied should be fire-resistant or use a fire-resistant cable. Such as fire, alarm, emergency lighting, DC power supply for interrupter operation and power supply for emergency shutdown of generator set; computer monitoring, dual relay protection, security power supply and other dual-circuit sharing one channel when the same channel is not isolated from each other.

(3)When the number of cables is small, fireproof coatings, tapes may be applied to the cables or the cables may be passed through the refractory tubes. When there are many cables in the same channel, it should be laid in the refractory tank box, and the power cable should be ventilated. In the environment without flammable dust, the semi-enclosed type can be used. When the cable protection section is laid on the bridge, the cable protection section is not long. A fire retardant bag can be used.