The 11 kV standard emerged largely from the early British electrical system. It was seen as an efficient and manageable voltage for local distribution networks, striking a balance between minimizing power loss over medium distances and maintaining safety. The decision to use 11 kV, and subsequently its multiples, became a de facto industry standard because it simplified the manufacturing of equipment like transformers, switchgear, and insulators. Once a standard was established, it was far more practical and cost-effective to continue using it rather than redesigning all the equipment.

At Ningbo Changshi, we provide a wide range of equipment and tools that are compatible with both traditional standards and modern systems, including specialized products for overhead and underground power line projects that operate at these standard voltage levels.