Abb Schweiz Ag

Abb S.p.a.

Abb Service S.r.l.

Paolo Antonello

Luca Ghezzi

Salvatore Brandonisio

Walter Patruno

John Samuel Beniston

Willy Schwarz

Yu Du

Taosha Jiang

Agostino Butti

Rostan Rodrigues

Franco Colombo

Mauro Guerra

Fabio Vallarino

Claudio Ascari

Matteo Chiaravalli

Sergio Valagussa

Solid state switching device including: a pair of line terminals including first and second line terminals for electrical connection with a corresponding phase conductor of an electric line; a switching assembly including one or more solid state power switches, the switching assembly having a first and second power terminals electrically connected with the first and second lines terminals, respectively; a heat sink element in thermal coupling with the switching assembly to adsorb heat from the switching assembly; an additional heat extraction arrangement to extract heat from the switching assembly and convey at least a portion of the adsorbed heat along the phase conductor through the first and second line terminals.

Solid state switching device

An electronic protection device for a LV electric line including at least a phase conductor and a neutral conductor, comprising: input terminals and output terminals, at which said electronic protection device is electrically connected respectively with an electric power source and with an electric load through said phase and neutral conductors; a control unit comprising a controller including data processing resources; one or more pairs of main contacts electrically connected with corresponding one or more input and output terminals and adapted to be mutually coupled or separated; one or more pairs of auxiliary contacts electrically connected with corresponding one or more input terminals and with said control unit and adapted to be mutually coupled or separated; a handle movable in a first position corresponding to a closed state of said electronic protection device, in a second position corresponding to a tripped state of said electronic protection device or in a third position corresponding to an open state of said electronic protection device; an operating mechanism adapted to operate said main contacts, said auxiliary contacts and said handle; a tripping unit adapted to actuate said operating mechanism in response to an activation by said control unit. Said main contacts and said auxiliary contacts are coupled when said electronic protection device is in said closed state with said handle in said first position. Said main contacts are separated and said auxiliary contacts are coupled when said electronic protection device is in said tripped state with said handle in said second position. Said main contacts and said auxiliary contacts are separated when said electronic protection device is in said open state with said handle in said third position.

Electronic protection device

The present invention refers to a low voltage circuit breaker with a control device for re-closing said low voltage circuit breaker. The control device is provided with an actuating element, comprising a shape memory material and operatively associated with maneuvering means for the circuit breaker. When this shape memory material performs a state transition, the actuating element causes the movement of said maneuvering means from a first operative position, associated with an open configuration of the circuit breaker, to a second operative position, associated with a closed configuration of the circuit breaker.

Low voltage circuit breaker with a control device for re-closing said low voltage circuit breaker

An electronic device () for measuring a differential current (ID) in an electric line () having a plurality of conductors, said electronic device comprising: a sensing circuit () comprising: a current transformer () having a magnetic core () through which the conductors of said electric line pass, a secondary winding () and an excitation winding () along which an excitation current (IE) circulates to polarize said magnetic core (); an output circuit section () electrically connected to said secondary winding () and configured to provide a first signal (V). The electronic device () further comprises: a first signal processing block () configured to process said first signal (V) and provide a second signal (VD) indicative of said differential current (ID); a second signal processing block () configured to process said second signal (VD) and provide a first measurement signal (IDCM) indicative of the absolute value of a time-invariant component of said differential current (ID); a third signal processing block () configured to process said first signal (V) and provide third and fourth signals (S, S) indicating whether said magnetic core () operates in a positive and/or in a negative saturation region of the hysteresis loop of said magnetic core; a fourth signal processing block () configured to process said third and fourth signals (S, S) and provide a second measurement signal (SDC) indicative of the direction of the time-invariant component of said differential current (ID).

Electronic device for measuring a differential current in an electric line

An electronic leakage current device a low-voltage power line, comprising:

Electronic earth leakage current device

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Arluno, Italy

Paolo Antonello