With the comprehensive promotion of standardization, intelligence, and lean transformation of urban and rural distribution networks in China, the shortcomings of traditional fixed cable terminals, such as complicated operation and maintenance, slow fault isolation, and large power outage range, are becoming increasingly prominent. Separable cable terminals that are suitable for uninterrupted operation and rapid maintenance scenarios have ushered in a large-scale popularization cycle and become the core supporting products for the upgrading and transformation of 10kV-35kV medium voltage distribution networks. The current intelligent distribution network construction focuses on efficient operation and maintenance, safe power supply, cost reduction and efficiency improvement. A series of products such as plug-in detachable terminals, shielded detachable connectors, T-shaped detachable cable terminals, and European style detachable terminals have been developed to completely reconstruct the application system of medium voltage cable terminals and fully adapt to the modern distribution network operation and maintenance needs.
As a core category of prefabricated cable accessories, detachable cable terminals adopt an integrated prefabricated silicone rubber structure, modular plug-in design, and stress cone balancing technology. They do not require open flame construction or winding auxiliary materials, and rely on pre installed molding technology to achieve tool free quick installation, quick disassembly, and quick replacement. Compared with traditional cold shrink and heat shrink fixed terminals, this type of product has core advantages such as repeatable plugging and unplugging, live operability, fast fault isolation, stable insulation performance, and zero partial discharge operation, effectively solving industry pain points such as difficult maintenance, cumbersome replacement, and susceptibility to secondary faults of traditional cable terminals. Simultaneously equipped with insulation sealing structure and interface nano processing technology, the interface bonding strength is greatly improved, and hidden dangers such as interface air gap, creepage, and flashover are eliminated.
In the renovation of urban core distribution network, industrial park distribution, and municipal power network, detachable cable terminals can be adapted to mainstream distribution equipment such as ring main units, branch boxes, and switch stations, which can flexibly realize cable branching, transfer, and reserved expansion, greatly reducing the duration of maintenance power outages and improving the reliability of distribution network power supply. With the normalization of uninterrupted power operation in the distribution network, separable cable terminals with fast operation and maintenance, safe isolation, and maintenance free long-term operation characteristics have become a necessary product for upgrading the quality of intelligent distribution networks, continuously promoting the standardization and efficient innovation of distribution operation and maintenance modes.