The 230 kV cable intermediate connector, whose voltage typically corresponds to the 127/220 kV rated voltage, is a critical component in high-voltage power transmission lines. It is mainly divided into two functional types and widely used in prefabricated structure.

Intermediate cold shrink couplings for voltage 110 kV are ready-made insulating products designed for connecting cable lines with voltage 110 kV. They provide elastic shrinkage thanks to cold shrink technology, providing reliable insulation, sealing and mechanical protection. Their main characteristics include low maintenance, ease of installation and a high degree of adaptability, allowing them to be widely used in tunnels, substations and other places.

Rated voltage: 66 kV, lightning impulse withstand voltage ≥ 250 kV, power frequency withstand voltage ≥ 125 kV (continuously for 30 minutes); partial discharge capacity ≤ 5 pC (complies with IEC 60840 standard).

Suitable for 33kV AC three-phase systems, designed using double-layer cold-shrink silicone tube with built-in stress cone to distribute the electric field evenly, local discharge capacity ≤ 10 pC; The connection of conductors is carried out by crimping, and the copper tube is suitable for cable cross-sections from 50 to 1000 mm².

Conductor Connection: Uses crimping or welding technology to securely connect two cable cores, which ensures good electrical conductivity between conductors, reduces contact resistance and minimizes energy loss. The insulating layer is made of silicone rubber, which has excellent insulating properties and corona resistance. It can withstand 24 kV voltage, preventing current leakage and short circuit.

Definition: It is a device installed in the middle of a 20 kV power cable line and used to connect two cables to ensure continuous transmission of electricity. The base material, ethylene propylene rubber, performs functions such as insulation, sealing and mechanical protection.