Measuring device for checking an electrical circuit breaker
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United States of America Patent
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Sep 22, 2015
Grant Date -
Nov 14, 2013
app pub date -
Apr 18, 2013
filing date -
May 10, 2012
priority date (Note) -
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Abstract
Measuring device for checking an electrical circuit breaker includes a current generating unit designed to generate a measurement current for a continuity measurement of a switching contact of the circuit breaker. The measuring device furthermore includes a measuring unit for registering a measurement signal at the circuit breaker, an energy supply unit for supplying a control drive of the circuit breaker with electrical energy, and a control unit, which has a timer. The control unit is able output to the control drive, via the control output, a signal for opening or closing the circuit breaker, and to determine a time-based switching behavior of the circuit breaker in dependence on the measurement signal. Further, the control unit is designed, in the case of the circuit breaker being closed, to determine the resistance of the switching contact in dependence on the measurement current and the measurement signal.
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