Method And Arrangement For Triggering A Series Spark Gap

A method for triggering a series spark gap, in which there are in series at least two partial spark gaps, and supply voltage is distributed over the partial spark gaps by means of first capacitors the method comprising arranging an additional electrode in at least one partial spark gap between first and second main electrodes thereof, setting voltage of the additional electrode to a given level by means of second capacitors, arranging the capacitance of the second capacitors to be lower than the capacitance of the first capacitors and triggering the series spark gap by disturbing the voltage distribution of the second capacitors, whereby the spark gap between the first main electrode of the partial spark gap and the additional electrode will ignite, and consequently the voltage determined by the first capacitors acts over the spark gap that is between the additional electrode and the second main electrode of the partial spark gap and that will also ignite, which further leads to the fact that supply voltage acts over the second partial spark gap alone, and consequently a spark-over also occurs therein.

An arrangement for triggering a series spark gap, which series spark gap comprises at least two partial spark gaps in series, and which arrangement comprises first capacitors for distributing supply voltage over the partial spark gaps, an additional electrode arranged in at least one partial spark gap between main electrodes thereof, second capacitors for setting voltage of the additional electrode to a given level, the capacitance of the second capacitors being lower than the capacitance of the first capacitors, and means for disturbing voltage distribution of the second capacitors.