Lightning surge detector, surge protective device, and management system for surge protective device
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United States of America Patent
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May 20, 2014
Grant Date -
Apr 4, 2013
app pub date -
Jul 27, 2012
filing date -
Sep 30, 2011
priority date (Note) -
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Abstract
A lightning surge detector 1 includes a first terminal unit 3 connected to a ground-side terminal unit of a surge protective device, a second terminal unit 4 connected with a ground wire, a conducting coupling bar 5 adapted to couple the first terminal unit 1 and the second terminal unit 4, a detection coil 7 placed in a vicinity of the conducting coupling bar 5 and adapted to detect a lightning surge current flowing through the conducting coupling bar 5, a waveform processing unit adapted to stretch a voltage waveform of the detected lightning surge current and thereby output a waveform-modified voltage, a computation control unit adapted to produce a calculation result of the lightning surge current from the waveform-modified voltage, and a display unit 40 adapted to display the calculation result, wherein all the above components are unitized by being housed in a casing 2.
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