Answer: The jointing and termination of 220kV cables are a crucial and highly technical phase of any project, requiring specialized accessories and skilled execution. This is where the cable connects to the substation or another cable section, and any fault here can lead to system failure.

Common methods and equipment include:

• Pre-molded Jointing Kits: These kits use silicone rubber components that are factory-tested and ready for installation. This method offers high reliability and a reduced installation time, as the parts are pre-engineered to fit the cable precisely.

• Heat Shrink and Cold Shrink Terminations: These technologies provide a robust seal and stress control for the cable's termination point. Heat shrink requires a controlled heat source, while cold shrink uses a removable core that allows the material to shrink onto the cable, making it ideal for hazardous environments.

• Link Boxes and SVLs: For long cable runs, link boxes and Sheath Voltage Limiters (SVLs) are essential. They manage induced sheath voltages and provide a point for cross-bonding, which minimizes losses and prevents dangerous overvoltages, especially during lightning strikes or fault conditions.

At Ningbo Changshi, we provide a complete range of overhead and underground tools, including the necessary equipment for the precise installation of these advanced jointing and termination accessories.