Analysis Of The Reasons For High Starting Voltage In Cold Shrink Cable Accessories

The high starting voltage of Cold Shrink Cable Accessories stems from the synergistic effect of materials and structure: the pre-stretched elastomer (such as EPDM/silicone) generates continuous compressive stress at the insulating interface after retraction, suppressing local field spikes. The built-in electric stress control layer (stress cone or high dielectric constant Hi-K material) alters the electric field distribution, reducing electric field concentration at the semiconductor fracture.