Abb Schweiz Ag

Abb Technology Ag

Andrea Farina

Stefano Magoni

Francesco Belloni

Huihuang Yang

Riccardo Furia

A contact assembly for connecting electrically and mechanically a first terminal of a first apparatus to a second terminal of a second apparatus, wherein at least one of the first and the second apparatus is movable with respect to the other along a connection/disconnection direction, includes: a plurality of electrically conducting contact-finger-elements, each including a main contact portion configured for engaging the second terminal and an auxiliary contact portion for engaging the first terminal, wherein the finger-contact-elements are supported by a support frame of the contact assembly connectable to the first terminal or are configured for being directly connectable and supportable by the first terminal; one or more spring elements configured for acting on the contact-finger-elements so to urge the main contact portions against the second terminal when the first and the second apparatus are connected. The main contact portions of at least two of the plurality of contact-finger-elements are shifted one relative to the other in such a manner so to engage the second terminal in subsequent moments when the first apparatus is being connected to the second apparatus by a relative movement thereof along the connection/disconnection direction.

Contact assembly for electrically and mechanically connecting a first terminal of a first apparatus to a second terminal of a second apparatus

An apparatus comprises a switchgear having at least one couple of stationary conducting terminals and a switching device, such as a circuit breaker, having at least one couple of corresponding movable conducting terminals. The switching device is movable with respect to the switchgear along a connection/disconnection direction between a connection position, wherein the switching device is electrically and mechanically connected to the switchgear by engagement of the movable conducting terminals with the corresponding stationary contacting terminals by means of contact assemblies coupled either to the movable conducting terminals or to the stationary conducting terminals, and a disconnection position, wherein the switching device and the switchgear are electrically and mechanically disconnected. The apparatus further comprises at least one vibration-limiting device integrally coupled to either one movable conducting terminal of said at least one couple of movable conducting terminals or to one corresponding stationary conducting terminal of said at least one couple of stationary conducting terminals and conformed such that: when the switching device is approaching the connection position moving along said connection/disconnection direction, the vibration-limiting device does not interfere with the other of the one movable conducting terminal or the one corresponding stationary conducting terminal; when the switching device is in the connection position, in case of vibrations of the one movable conducting terminal transversal to said connection/disconnection direction, the vibration-limiting device interferes with the other of the one movable conducting terminal or the one corresponding stationary conducting terminal so to limit the vibrations amplitude.

Vibration-limiting device for an apparatus comprising a switchgear and a switching device, such as a circuit breaker, and apparatus comprising said vibration-limiting device

A switchgear apparatus () comprising a switching unit () comprising one or more electric poles (), a truck assembly (), on which said switching unit is mounted, said truck assembly being movable with respect to a supporting frame (), actuation means () for moving said truck assembly, said switching unit being reversibly movable between an insertion position (A), at which said switching unit is electrically connected to an electric line, and a withdrawal position (B), at which said switching unit is electrically disconnected from said electric line and an electro-mechanical signalling arrangement () that is mounted on said truck assembly, said electromechanical signalling arrangement interacting with said actuation means to provide electric signals indicative of the position of the switching unit at said insertion position (A), at said withdrawal position (B) or at an intermediate position (C) that is different from said insertion position and said withdrawal position. The electro-mechanical signalling arrangement comprises an auxiliary contact device () of the rotational type and a first and second signalling mechanism () to actuate said auxiliary contact device.

Switchgear apparatus of the withdrawable type

A support-assembly suitable for a micro-switch of a switching device, including bracket-support-means suitable for being connected, in a stationary position, to a frame portion of the switching-device, coupling-protrusion-component shaped for being provided at an end of an operating-shaft of the micro-switch and for movably engaging with the bracket-support-component. The coupling-protrusion-component and the bracket-support-component being configured for enabling a rotation of the operating-shaft around a rotation-axis and for preventing a movement of the operating-shaft transversely to the rotation-axis.

Growing community of inventors

Monza, Italy

Andrea Farina