Medium-voltage fire-resistant cable

• Main Authors: ZHANG XIAOHUAN, LI GUANGBO, SHENG JUNKAI, SU YUNCHENG
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

The invention provides a medium-voltage fire-resistant cable, and belongs to the field of cables. The medium-voltage fire-resistant cable comprises an outer sheath, a plurality of fire-resistant wire cores, a thermal deformation piece and a tensile rope. The outer sheath is flat and is made of a thermosetting refractory material, a breakage-proof net surrounding the side wall is embedded in the outer sheath, and an elastic inward bending part is arranged at the corner of the side wall; the plurality of fireproof wire cores are arranged in the outer sheath and are arranged along the long axis of the outer sheath; the thermal deformation part is arranged along the inner wall of the inner bending part and is suitable for expanding the inner bending part after being heated; the tensile rope has an electrothermal effect, is arranged in the inner bending part, is in heat conduction connection with the thermal deformation part and is suitable for heating the thermal deformation part; the temperature required for exp