The invention relates to a
flame-retardant and cold-resistant power feeding and
signal cable and a preparation method thereof. The
flame-retardant and cold-resistant power feeding and
signal cable includes a center conductor, a liner layer, two or more sets of three-core
twisted pair conductors, two or more sets of two-core
twisted pair metal shielding conductors, an
isolation layer and an outer sheath layer, wherein the liner layer wraps the center conductor, the three-core twist pair conductors and the two-core
twisted pair metal shielding conductors are located at the periphery of the linerlayer, the
isolation layer wraps the three-core twisted pair conductors and the two-core twisted pair
metal shielding conductors, and the outer sheath layer is located outside the
isolation layer. The
flame-retardant and cold-resistant power feeding and
signal cable of the invention has the advantages of compact structure, stable performance, high torsion resistance, high tensile resistance, highflexibility, high stability, small
dielectric loss, strong transmission signal capability, high anti-interference performance, high reliability in transmitting weak analog signals or digital signals,and can be widely used in systems or devices for the detection and control of power generation,
metallurgy,
petroleum, chemical,
textile sectors and other sectors and can be used under harsh
field conditions under temperature of -50 to 100 DEG C.