| 摘要 |
<p>PURPOSE:To stably and certainly perform triggering and to simplify the title apparatus by taking out the flashover current flowing from a voltage source to a switch tested as trigger pulse voltage by an impedance element. CONSTITUTION:A trigger gap 10 is equipped with a main electrode 11, a perforated main electrode and a trigger pin 13 and the connection point of the trigger pint 13 and the impedance element 6 of a voltage supply circuit is connected to one end of an impedance 9 while the other end of the impedance element 9 is connected to a breaker 4 tested in series. The connection point of the impedance element 9 and the breaker 4 tested is connected to the effective main electrode 12 of a trigger gap 10 by a conductor 14 and a condenser 15 is provided to a transformer 5 on the secondary side thereof in parallel. The flashover current of the breaker 4 tested is taken as voltage by the impedance element 9 and, from this voltage, the pulse voltage necessary for triggering the trigger gap 10 is obtained and the high current necessary for triggering is directly supplied from a voltage source. By this method, the apparatus is simplified and triggering can be performed stably and certainly.</p> |
