Cable Diameter and Insulation Design: Power cables have thicker diameters, commonly with 3 or 4 cores, thick inter-phase insulation, and metal armor protection, meeting the requirements of high current transmission. Control cables are relatively thinner with thinner insulation, but feature an added shielding layer to reduce signal interference and meet the requirements of low-voltage environments.
Voltage Level Differences: Power supply voltages are typically above 1000V (cable rated voltage 600/1000V), suitable for high-power transmission. Control supply voltages are lower (generally below 450V, cable rated voltage 300/500V), specifically designed for low-voltage signal transmission to avoid high-voltage interference with precision control signals. In practical engineering, the distinction between these two voltage levels is crucial.