CIRCUIT ASSEMBLY FOR ELECTRONICALLY ACTUATING TRIGGERABLE SURGE ARRESTERS
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United States of America Patent
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Issued Date -
Jul 19, 2018
app pub date -
Jun 16, 2016
filing date -
Jul 27, 2015
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Abstract
The invention relates to a circuit assembly for electronically actuating triggerable surge arresters, such as spark gaps, multi-electrode gas arresters, or similar means. At least one power semiconductor is activated by a switching stage upon detecting a surge event, and the output side of the power semiconductor is connected to a trigger input of the surge arrester. According to the invention, the switching stage is designed as a control and analysis unit for detecting transient surge events and has first a pulse detection stage which allows a detection of pulses in a level-sensitive or increase rate-dependent manner and second a microcontroller or similar means for evaluating events. The output side of the microcontroller leads to the control input of the power semiconductor, and a quick-switching rectifier is provided between the output of the power semiconductor and the trigger input of the surge arrester.
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