Zanoli & Giavarini S.p.A.

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.

The present invention relates to a vacuum-tight valve (1), in particular for high vacuum applications. The valve comprises a valve body (2) which includes a first head (21) and a second head (22) opposite each other, wherein said valve body (2) defines an inner cavity (200) which extends between said heads (21, 22), where each head (21, 22) comprises a respective opening (221). The valve further comprises a closure member assembly (3) housed in the valve body (2), where such an assembly comprises a closure member (31) and a sealing seat (32). Said closure member (31) can be rotated around a rotation axis (105) with respect to the valve body (2) between an opening position, for which the openings of the two heads (21, 22) are communicating, and a closing position, in which said closure member (31) cooperates in a sealing manner with said sealing seat (32), preventing communication between said openings. According to the invention, the valve is provided with two bellows members (51, 52) arranged inside said cavity (200) so as to define an annular chamber coaxial to a reference axis (101) identified by the opening (211) defined through the first head (21), wherein for each of said bellows members (51, 52), a first end is connected to the first head (21) and a second end is connected to the sealing seat (32), wherein the pressure inside said annular chamber is adjustable to cause a movement of the sealing seat (32) along a direction parallel to said first reference axis (101). The valve according to the invention further comprises a guiding assembly arranged inside said cavity (200) and operatively connected to the sealing seat (32) to guide said movement along said direction parallel to said reference axis (101).

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 device (1, 1', 1") for reading the profile of a blade (5B) of a key (5). This device comprises a chamber (10) in which said blade (5B) can be positioned through an inlet section (9). The device (1, 1', 1") comprises a support assembly (30) including at least one support element (31) that supports a flat surface (300) for supporting a portion of the key (5), where this flat surface (300) defines a reference plane (100). The device (1, 1', 1") further comprises a lighting assembly (20) operatively associated with the chamber (10) to illuminate the blade (5B) and an optical assembly (40) configured to provide at least one image (IP) of the profile of the blade (5) and at least one image (IC) of the blade (5B) captured on the reference plane (100). According to the invention, the support element (31) is rotatable about an axis of rotation (501) orthogonal to said reference plane (100) and the device (1, 1', 1") is provided with a drive unit (50) to rotate said support element (31) about the axis of rotation (501). The device (1, 1', 1") comprises an electronic control unit (ECU) operatively connected to the optical assembly (40) and to the drive unit (50), where this electronic control unit (ECU) is configured to acquire an image of said blade (5B), determine misalignment of the blade (5B) with respect to a reference direction (101) predetermined as optimal for acquiring the profile image (IP), drive the drive unit (50) so as to correct said misalignment and acquire, following correction of the misalignment, the profile image (IP).

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 kit (1) for installing a control assembly (100) of a toilet flushing tank, wherein said control assembly (100) comprises an outer plate (21) provided with at least one push button (21A, 21B) and with a guide unit (22) to guide the movement of said at least one push button (21A, 21B). The kit according to the invention comprises a mounting frame (10) connectable to a body of said toilet flushing tank. This frame (10) comprises a first portion (11) to which the outer plate (21) can be connected and a second portion (12) defining a space in which the guide unit (22) can be at least partially housed. The kit according to the invention comprises a plurality of drive pins (5A, 5B, 5C, 5D), each of which can be used to operatively connect the push button (21A, 21B) to a specific model of said toilet flushing tank. The kit further comprises a plurality of adapter bodies (40A, 40B) each provided with a guide (51A, 51B) to support and guide at least one of the pins (5A, 5B, 5C, 5D). According to the invention, the frame (10) further comprises a reference opening (30A, 30B) for the passage of at least one of the pins (5A, 5B, 5C, 5D). Each of the adapter bodies (40A, 40B) can be connected to the frame (10) at the reference opening (30A, 30B) according to at least one possible connection mode that establishes a corresponding operating position for the guide (51A, 51B) with respect to the frame (10).