Monitoring system
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United States of America Patent
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Oct 24, 2017
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N/A
app pub date -
Jul 16, 2014
filing date -
Jul 16, 2013
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Abstract
A monitoring system having a monitoring unit and a circuit element that are integrated in an enclosure for protecting connections between the monitoring unit and the circuit element. The monitoring unit monitors the circuit element via a first electrical quantity, and the monitoring unit has a control unit and a first circuit unit and a second circuit unit. The first current is essentially or precisely equal in amplitude to the first current, and the first current and the second current flow simultaneously in the two line sections. The first current direction is opposite to the second current direction, and the first circuit unit ascertains a first voltage drop at the first line section, and the second circuit unit ascertains a second voltage drop at the second line section. The control unit ascertains the first electrical quantity from the first voltage drop and the second voltage drop.
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