Measurement of a resistance of a switching contact of an electrical circuit breaker
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United States of America Patent
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Apr 26, 2016
Grant Date -
Nov 14, 2013
app pub date -
Apr 23, 2013
filing date -
May 10, 2012
priority date (Note) -
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Abstract
The present invention relates to a measuring device (10) for measuring a resistance of a switching contact (5) of an electrical circuit breaker (1). The measuring device (10) comprises a high-current generating unit (11) for generating a measurement current for the resistance measurement, and a measuring unit (12) for registering a measurement signal at the circuit breaker (1) during the opening or closing of the switching contact (5), and for determining a time-based resistance course of the switching contact (5) during opening or closing, in dependence on the measurement current and the measurement signal.
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