Shallow seabed symmetric audio communication cable and manufacture method thereof
An audio communication, symmetrical technology, applied in submarine cables, cable/conductor manufacturing, cables with double-stranded/quad-stranded, etc. problems such as the influence of signal transmission, to achieve the effects of excellent physical and mechanical properties, high mechanical strength, and stable communication signal transmission
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[0019] The shallow sea submarine symmetrical audio communication cable of the present invention is manufactured according to the following steps in sequence: (1) A high-pressure polyethylene insulating layer with a nominal thickness of 1.0 mm is extruded on a solid circular copper conductor with a diameter of 1.2 mm to form an insulating core 3a; The nominal thickness of the high-pressure polyethylene insulation layer is 1.0mm and the minimum thickness is not less than 90% of the nominal thickness, the maximum thickness is not greater than 110% of the nominal thickness, and the diameter deviation measured by any vertical section does not exceed 10%.
[0020] (2) Twisting four insulated wire cores 3a of different colors into a star stranded group 3, and the two on the diagonal form a working pair; wrap different color ribbons 3b outside the star stranded group, and then combine the four The star-quad groups are arranged tangentially in a circular array on the outer periphery of ...
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