The testing scope for hybrid cables covers multiple dimensions, including electrical performance, mechanical performance, environmental adaptability, and material properties.
Main testing items include: conductor DC resistance testing to verify the conductivity and cross-sectional area compliance of the conductor material; insulation resistance testing to evaluate the insulation characteristics of the insulation material under rated voltage; power frequency withstand voltage testing to verify the insulation system's ability to withstand overvoltage; partial discharge detection to identify potential internal defects in the insulation; capacitance and inductance parameter measurement to ensure transmission characteristics meet design specifications; shielding effectiveness testing to evaluate electromagnetic compatibility performance; mechanical bending testing to verify the cable's flexibility and structural integrity during installation and use; flame retardant performance testing to assess the fire safety characteristics of the cable material; and environmental aging testing to simulate durability under actual use conditions. For hybrid cables containing fiber optic units, optical parameters such as fiber attenuation, bandwidth, and geometric characteristics must also be tested.