| 摘要 |
<p>The invention relates to an overvoltage arrester (1) having a gas-filled housing wherein, spaced from one another by a tubular insulator (5), electrodes (3,4) are disposed opposite one another and at the inner surface of the insulator at least one ignition line (6) extends in direction from the one electrode to the other electrode, whereby the arrester (1) is surrounded by a concentric socket (2). With this arrester (1) the electrical influence of this socket (2) is to be utilized to provide arresters with even further improved life span. For this the invention provides that the socket (2) is at ground potential, that the ignition line (6) is electrically conductively connected to the electrode (3) which is formed as a wire or pin electrode and ends in a rear space of the other electrode (4) in which low vapor deposition occurs, the electrode being formed as a perforated or hollow electrode, whereby the two electrodes (3,4) are arranged in such a way that an approximately equal spacing is formed between the electrodes (3,4) and between the perforated electrode (4) and the ignition line (6). The invention is used with gas discharge overvoltage arresters.</p> |
