▎ 摘　　要

NOVELTY - The cable has a power cable (1) and a signal cable (2). A power core (8) is provided inside the power cable. A signal wire core (12) is provided inside the signal cable. A connecting portion is provided between the power cable and the signal cable. A connecting portion includes a first suction portion (9) and a second suction portion (13). The power cable and the signal cable are both provided with a shielding layer (5). The shielding layer includes graphene and radiation cross-linked polyethylene. The graphene is a single-layer graphene or a multi-layer graphene, and the radiation cross-linked polyethylene is provided on the outer layer of the graphene. The outer side of the shielding layer is coated with a nickel oxide coating. USE - Internal power and signal transmission cable of railway locomotive. ADVANTAGE - The magnetic field generated by the electromagnetic coil in the connecting portion is counteracted with the induction magnetic field of the power cable. The magnetic flux in the signal cable range is reduced, and the electromagnetic interference of the power cable to the signal cable is reduced. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross-sectional structure view of the internal power and signal transmission cable. Power cable (1) Signal cable (2) Shielding layer (5) Power core (8) First suction portion (9) Signal wire core (12) Second suction portion (13)