De Bortoli, Eros

A monitoring arrangement for monitoring pressure and/or density of an insulating gas in a sealed tank of an electrical apparatus for electric grids or systems, said monitoring arrangement comprising: - a propeller unit arranged in an internal volume of said sealed tank, wherein said propeller unit comprises an inner rotor member rotatable about a rotation axis (A) and at least partially made of a ferromagnetic material, wherein said propeller unit comprises a propeller member mechanically coupled to said inner rotor member in such a way to rotate about said rotation axis together with said inner rotor member, said propeller member having one or more blades immersed in said insulating gas; - a magnetic field generation unit arranged outside said sealed tank and operatively coupled to said propeller unit, wherein said magnetic field generation unit is structured to generate a rotating magnetic field enchaining with said inner rotor member and causing said inner rotor member to rotate about said rotation axis together with said propeller member; - a sensing unit arranged outside said sealed tank and operatively coupled to said magnetic field generation unit, wherein said sensing unit is structured to provide first detection data indicative of the electric power absorbed by said magnetic field generation unit to generate said rotating magnetic field; - a power and control unit arranged outside said sealed tank and operatively coupled to said magnetic field generation unit and to said sensing unit, wherein said power and control unit is structured to drive said magnetic field generation unit so that said magnetic field generation unit generates said rotating magnetic field and causes said inner rotor member to rotate about said rotation axis together with said propeller member, wherein said power and control unit is structured to receive and process said first detection data and generate first measurement data indicative of at least one between density and pressure of said insulating gas based on said first detection data.

A switch pole for a low voltage switching device comprising:- an insulating casing defining an internal space with a contact region and an arc extinguishing region of said switch pole;- a first pole terminal and a second pole terminal couplable with corresponding line conductors of an electric line;- a fixed contact assembly and a movable contact assembly positioned in said contact region and including fixed contacts and movable contacts, respectively, which can be mutually coupled or uncoupled.Sais movable contact assembly comprises an insulating baffle protruding towards said fixed contact assembly and slidingly inserted, at least partially, in a receiving recess defined by said insulating casing.Said insulating baffle is interposed between one or more first fixed contacts and one or more second fixed contacts of said fixed contact assembly and being interposed between one or more first movable contacts and one or more second movable contacts of said movable contact assembly.

A contact assembly for circuit interrupters, which comprises first and second contact members positioned facing each other along a longitudinal axis and movable relative to each other along said longitudinal axis between an open position and a closed position. Said contact assembly comprises a carved shield member formed by a hollow piece of conductive material positioned coaxially relative to said second contact members along said longitudinal axis and spaced apart from said first and second contact members.

A switch pole for a low voltage switching device comprising: - an insulating casing defining an internal space with a contact region and an arc extinguishing region of said switch pole; - a first pole terminal and a second pole terminal couplable with corresponding line conductors of an electric line; - a fixed contact assembly and a movable contact assembly positioned in said contact region and including fixed contacts and movable contacts, respectively, which can be mutually coupled or uncoupled. Said movable contact assembly comprises an insulating cover at least partially covering one or more conductive portions of said movable contact assembly. Said insulating cover is hinged on a supporting structure of said movable contact assembly in such a way to move together with said supporting structure, and reversibly move relative to said supporting structure, when said movable contact assembly moves about said rotation axis, during a manoeuvre of said switch pole.

Battery assembly for industrial machinery, characterized by comprising: - a battery pack comprising one or more battery cells; - a containment tank housing said battery pack; - a closing lid for said containment tank; - a plurality of first power connectors fixed to said closing lid and electrically connected to the battery cells of said battery pack; - an electronic unit suitable for controlling the operation of said battery pack; - a plurality of second power connectors fixed to the containment casing of said electronic unit and electrically connected to power circuits (51) of said electronic unit; - first reversible electrical connection means for electrically connecting, in a removable manner, said first power connectors to said second power connectors; - first reversible fastening means for removably fixing the containment casing of said electronic unit to said closing lid.

The present invention relates to a residual current device (500) for low-voltage electrical systems. The residual current device (500) comprises:- a detection stage (2) that, in operation, is coupled to an electric line (100), wherein said detection stage (2) is configured to detect a residual current in said electric line (500) and provide a detection signal (V(t)) indicative of said residual current;- an electronic stage configured to receive and process said detection signal;The electronic stage (3) comprises a signal processing unit (30) configured to process said detection signal (V(t)) and, possibly, determine whether the electric line is subject to an earth leakage fault. According to further aspects, the present invention relates to a method for detecting a residual current in an electric line (100) and a method for determining the presence of an earth leakage fault in an electric line (100).

A detection arrangement for DC grids, characterized in that it comprises:- a first detection module configured to detect a line current flowing along an Electric line and provide a first detection signal indicative of said line current;- a second detection module configured to detect said line current along said Electric line and provide a second detection signal indicative of a magnitude variation rate over time of said line current;- a plurality of signal processing modules to process said first and second detection signals and provide a detection signal indicative of the behaviour of said line current.

The present invention refers to a padding arrangement (1) for helmet, said padding arrangement being adapted to cover, at least partially, the user's head during use of said helmet, said padding arrangement comprising a first layer (11), having a first surface (111) and a second surface (112) opposite each other, and a second layer (12) having a third surface (123) and a fourth surface (124) opposite each other, wherein said first and second layers (11, 12) are superimposed so that the second surface (112) of said first layer (11) and the third surface (123) of said second layer (12) face each other; wherein said padding arrangement further comprises a first structure (13) made of thermoplastic material, joined to said first layer (11) and protruding from the second surface (112) of said first layer (11), and a second structure (14) made of thermoplastic material, joined to said second layer (12) and protruding from the third surface (123) of said second layer (12), wherein at least one of said first and second structures (13, 14) made of thermoplastic material is elastically deformable; wherein said first structure (13) made of thermoplastic material and said second structure (14) made of thermoplastic material respectively comprise first connection portions (130b) and second connection portions (140b) mutually coupled so as to join said first and second structures (13, 14) made of thermoplastic material to each other.

The present invention relates to a method for probing a circuit breaker electrically connected between a first line section and a second line section of an electric line. The method comprises the following steps: - a first step of injecting one or more first signals at a first point of said electric line, wherein said one or more first signals have frequency content at least partially included in a predefined frequency range; - a second step of detecting one or more second signals at a second point of said electric line, wherein said one or more second signals are detected with a detection frequency band calculated based on said frequency range; - a third step of calculating a frequency response function of said electric line in said frequency range based on the detected one or more second signals.

The present invention relates to a method for probing a circuit breaker electrically connected to an electric line. The probing method comprises the following steps: - injecting (101) a first signal (S1(t)) at a first point (A) of said electric line, wherein said first signal has a predefined frequency content and a predefined frequency band and is injected during an injection time interval (TJ) having a predefined time duration; - detecting (102) a second signal (S2(t)) at a second point (B) of said electric line, wherein said second signal is detected during a detection time interval (TD) including at least partially said injection time interval (TJ); - processing (103) a first portion of said second signal (S2(t)), which refers to a first portion (TJ) of said detection time interval (TD), during which said first signal (S1(t)) is injected, to calculate a first signal value (GJR) indicative of the signal power of said second signal (S2(t)) in the frequency band of said first signal S1(t), during the first portion (TJ) of said detection time interval (TD); - processing (104) a second portion of said second signal (S2(t)), which refers to a second portion (TN) of said detection time interval (TD), during which said first signal (S1(t)) is not injected, to calculate a second signal value (GN) indicative of the signal power of said second signal (S2(t)) in the frequency band of said first signal S1(t), during the second portion (TN) of said detection time interval (TD).