Abb Schweiz Ag

Vittorio Cozzi

Agostino Butti

Antonio Currá

Luca Ghezzi

Yannick Maret

Matija Varga

Antonio Currà

An arc fault detection device for detecting an arc fault in an electric line includes a first terminal and a second terminal for connecting the arc fault detection device to a conductor of the electric line. A sensor is adapted for generating a sensor signal from a current through the electric line; and a controller is adapted for detecting the arc fault from the sensor signal. The sensor includes an inductor connected to the first terminal and the second terminal and a capacitor connected in parallel with the inductor. The inductor and the capacitor form a resonant circuit with a resonance frequency, the resonance frequency determining an impedance behavior of the resonant circuit; wherein the inductor and the capacitor are chosen such that the impedance behavior of the resonant circuit corresponds to a desired impedance behavior over a relevant frequency range of the current through the electric line.

Arc fault detection device with wideband sensor

An electronic protection device () for a LV electric line () including one or more conductors (P, N), comprising: Said signalling arrangement comprises a first signalling device () adapted to provide light signals (L, L, L) indicative of the operating conditions for said electronic protection device, when said electronic protection device is in a closed state.

Electronic protection device

An electronic protection device for a LV electric line including one or more conductors, comprising: one or more pairs of electric contacts adapted to be electrically connected with corresponding conductors of the electric line, the electric contacts being operatively coupleable or decoupleable from one another; and a control unit adapted to control the operation of the electronic protection device; wherein the control unit includes an electronic arrangement to detect and determine arc fault conditions in the electric line.

An electronic protection device for a LV electric line, the protection device being provided with a control unit comprising a controller including digital data processing resources clocked by a first clock source adapted to provide a first flock signal with a first nominal clock frequency. The control unit comprises a clock testing arrangement adapted to check whether the first clock source is properly operating.

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Vittuone, Italy

Vittorio Cozzi