Power cable performance detection device and detection method thereof

The invention discloses a power cable performance detection device and a detection method thereof, and relates to the technical field of cable performance detection, the power cable performance detection device comprises a support frame plate, and one end, located at the inner side of the support frame plate, of a T-shaped guide plate is provided with a displacement detection member. Through the arrangement of the displacement detection piece, when flame ejected by the flame projector burns out the cable sheath, the T-shaped guide plate can drive the burnt-out cable sheath to move in the direction away from the flame projector under the action of the displacement spring, along with the movement of the T-shaped guide plate, the positioning gear can make contact with and be engaged with the fixed connection rack, at the moment, the T-shaped guide plate continues to move, and the cable sheath is burnt out through the displacement detection piece. When the fire extinguishing device is in use, a positioning gear r