Analysis and Application of a 66 kV Self-extending Cable Joint

In addition to external force damage, most transmission cable accidents are due to poor joint production and installation. When the cable balance is insufficient, an additional connector is required to replace the faulty connector to complete the cable line repair work, resulting in an increase in risk points and a rush to grab. In order to improve the quality and efficiency of emergency repair, a self-extending quick repair joint is adopted, which changes the original metal connection pipe structure and prolongs the connection distance of the cables at both ends, and the maximum extension distance is 460 mm. At present, the joint has been used in Dalian and other regions to realize the “one-for-one” solution of the intermediate joint, which greatly improves the emergency repair efficiency and the quality of joint production and installation. Ensure the safe and stable operation of the cable.