Combined isolation/earth switch high voltage installation having knife edge contacts forming branch/earth connections and metallic screens isolation position covering free knife ends.

摘要

The combine switching installation has connections (36a-c) to knife edge contacts (64a-c) providing branch and earth connections. Each pole has two metallic screens (80a-c,82a-c) which are fixed and parallel. In the isolation position the free knife edge ends are held between the screens.