Triggering circuit of overvoltage protection with an asymmetric element
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United States of America Patent
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May 2, 2017
Grant Date -
Nov 10, 2016
app pub date -
Dec 9, 2014
filing date -
Jan 3, 2014
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Abstract
A triggering circuit of an overvoltage protection device with an asymmetric element, specified for actuating a spark gap in symmetric or asymmetric arrangement of main electrode I, connected to input terminal I, of main electrode II, connected to input terminal II, and the auxiliary electrode, includes main electrode I of the spark gap, which is connected via a thermo-sensitive disconnector, and also via a parallel combination of varistor II and capacitor I to electrode I of the asymmetric three-pole lightning arrester, whose middle electrode is connected via the primary winding of the transformer to 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 the secondary winding of the transformer to main electrode II of the spark gap, and at the same time, the thermo-sensitive disconnector is coupled via the thermal coupling with varistor II and, at the same time, the voltage at the asymmetric three-pole lightning arrester is as follows: static ignition voltage U1 between electrode II and the middle electrode is higher than static ignition voltage U2 between the middle electrode and electrode I.
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