Gas discharge tube for overvoltage diverter - has two electrodes inside insulating tube, with graphite ignition strip covering part of tube length

摘要

The tube has an inert gas filled case with electrodes opposite to each other gas tightly inserted in the ends of an insulating tube. At least one conducting strip is provided as an ignition device, extending over a part of the tube length from one electrode to the other. The insulating tube is made of glass or quartz, or at least is glazed on its inner side, and the ignition strip (4) is made of a specially soft graphite adhering to glass and applied dry on the insulating tube.