Flame-retardant B1-level environment-friendly medium-voltage power cable for building fire safety

The utility model relates to a flame-retardant B1-level environment-friendly medium-voltage power cable for building fire safety, which comprises a plurality of insulating wire cores which are twisted to form a cable core, fillers are arranged in gaps of the cable core, a wrapping layer is arranged outside the cable core, an oxygen barrier layer is arranged outside the wrapping layer, an armor layer is arranged outside the oxygen barrier layer, and a sheath layer is arranged outside the armor layer. An isolating layer is arranged outside the armor layer, an outer sheath is arranged outside the isolating layer, each insulating cable core comprises a conductor, a conductor shielding layer is arranged outside the conductor, an insulating layer is arranged outside the conductor shielding layer, an insulating shielding layer is arranged outside the insulating layer, a metal shielding layer is arranged outside the insulating shielding layer, and the metal shielding layer is arranged outside the metal shielding laye