Patent ID: 9640951
Date: 2017-05-02
CPC Classifications: H01T,H02H

Claim:
1. A triggering circuit of an overvoltage protection device with an asymmetric element, specified for actuating a spark gap in a symmetric or an asymmetric arrangement of a main electrode I, connected to an input terminal I, of a main electrode II, connected to an input terminal II, and an auxiliary electrode, comprises a main electrode I of a spark gap, which is connected via a thermo-sensitive disconnector, and also via a parallel combination of a varistor II and a capacitor I to an electrode I of an asymmetric three-pole lightning arrester, whose middle electrode is connected via a primary winding of a transformer to the main electrode II of the spark gap, whose auxiliary electrode is connected via varistor I to electrode II of the asymmetric three-pole lightning arrester, which is connected via a secondary winding of the transformer to the main electrode II of the spark gap, and at the same time, a thermo-sensitive disconnector is coupled via a thermal coupling with varistor II and, at the same time, a voltage at the asymmetric three-pole lightning arrester is as follows: static ignition voltage U 1 between electrode II and the middle electrode is higher than static ignition voltage U 2 between the middle electrode and electrode I.