Eaton Intelligent Power Limited

Adam Gabriel

Tomas Drabek

Jeremy Kramer

Tomás Drábek

A current measuring arrangement includes a first electrical conductor having a first resistance and a second electrical conductor switched in parallel and having a second, higher resistance, wherein both the first resistance and the second resistance are each below 0.1&#x3a9;. The arrangement further includes a hall sensor, which is prepared to measure a current through the second electrical conductor, and a calculation unit, which is connected to the hall sensor and which is designed to calculate a total current through the first electrical conductor and the second electrical conductor based on the current measured by the hall sensor. A switching device provides a comparable functionality.

Arrangement and switching device with contactless current measuring capability

A switch includes: at least one conducting line led through the switch; switching contacts arranged in the at least one conducting line; at least one measurement transformer arranged at the at least one conducting line; an electronic trip unit, a measurement-input of the electronic trip unit being electrically connected to a measurement transformer secondary winding of a measurement transformer; a power supply unit; at least one power transformer arranged at the at least one conducting line, the at least one power transformer including a power transformer secondary winding which is electrically connected to the power supply unit in order to supply the electronic trip unit; a signal generating unit for generating a test signal with at least a first predefined frequency, with an output of the signal generating unit being electrically connected to the power transformer secondary winding; and a self-test unit electrically connected to the measurement transformer secondary winding.

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Prague, Czechia

Adam Gabriel