AIR SPARK GAP FOR DETERMINING THE MAXIMUM VOLTAGE AT A VOLTAGE SURGE SUPPRESSOR

摘要

The present invention relates to an air spark gap for defining a maximum voltage of an aged voltage surge suppressor of the type having an electrode arrangement in a capsule filled with an inert gas. The voltage surge suppressor is disposed in a voltage surge protection plug. The air spark gap is disposed between two contact members parallel to the voltage surge suppressor. One of the contact members is electrically connected with a contact element resting, in the plugged-on condition of the voltage surge protection plug, resiliently on a surface portion against the other one of the contact members. To prevent electrical connection, an electrical insulation foil having a given thickness is arranged between the contact element and the other one of the contact members; the electrical insulation foil has an opening forming an air gap therebetween.