Lightning arrester.

摘要

A lightning arrester for discharging electricity from an electrode (22) in a container (20) of the ground voltage level filled with electric insulation fluid when an excessive voltage is imposed on the electrode. The arrester (28) has characteristic elements (38) for selectively discharging electricity and an insulation tube (30) for enclosing the characteristic elements. The insulation tube is so arranged as that part of the characteristic elements are inserted in the container and some of them project out. The characteristic elements are connected to the electrode in the container, and selectively connected and disconnected to the ground.