Hierarchical Protection Of Lightning Arresters

Implement 400 kv lightning arrester graded protection according to the hierarchical structure of the electrical system, for example, install Class B 66 kv lightning arrester in the main distribution cabinet, Class C 66kv surge arrester in the secondary distribution cabinet, and Class D 69 kv lightning arrester.9kv 5ka lightning arrester at the terminal equipment. Multi-level protection can more effectively disperse and absorb lightning energy.