Fire-proof medium-voltage cable

The utility model relates to a fire-proof medium-voltage cable. The fire-proof medium-voltage cable is characterized in that the cable is composed of an outer wrapping layer and an inner core; the inner core is composed of at least one cable wire core; and the outer wrapping layer is composed of a thermal insulating layer, a fire-proof layer, an oxygen barrier layer, an armored shock resistance layer and a sheath. When the fire-proof medium-voltage cable is used, the cable is composed of the outer wrapping layer and the inner core, the outer wrapping layer is provided with the fire-proof layer, and the fire-proof layer is fabricated in a manner of overlapping and wrapping of a ceramic silicone rubber belt, so a fire-proof requirement of the cable is satisfied, material selection, the structure size and electrical performance are taken into account, and the object of cost reduction is achieved at the same time; and, at a rated working voltage, flame temperature of the fabricated cable is not less than 750 DEG C, and a fuse is not broken in fire supply time of 90min. And the cable has no heavy metal, is non-toxic and odorless, and does not generate an influence on a human body and environment; and the heat conductivity coefficient reaches 0.09W/Mk, specially, the internal of the cable after thermal ablation is in the shape of a uniform honeycomb, and the cable has better fire resistance and the better heat insulation property.