Abstract: A gas-insulated switchgear device which has a first bushing which accommodates a first terminal, a second bushing which accommodates a second terminal, a first enclosure which contains an interruption unit, and at least one first disconnection unit which has a first fixed contact electrically connected to the interruption unit and a second fixed contact at ground voltage, a first moving contact which is electrically connected to the first terminal and can be coupled to the first and second fixed contacts, the moving contact being fixed to a rotary operating element and rotating rigidly therewith, the fixed contacts that can be coupled to the moving contact lying on the rotation plane of the moving contact.

Abstract: A gas-insulated switchgear device for high- and medium-voltage applications, comprising an enclosure which contains a disconnection unit which is electrically connected to a first electric terminal and is arranged in the enclosure in a substantially central position, and a first interruption unit and a second interruption unit which can be connected electrically to the disconnection unit and, respectively, to a second electric terminal and a third electric terminal, the first and second interruption units being arranged mutually opposite with respect to the disconnection unit.

Abstract: A pole of a high- and/or medium-voltage circuit breaker, including an insulating housing, at least one, interruption chamber which is positioned inside the insulating housing and contains at least a moving contact and at least a fixed contact. A device for measuring the electric current flowing through the pole, and a dielectric gas, the particularity of which is the fact that said device for measuring the electric current flowing through the pole includes an optical current sensor arranged within a volume of the pole that is occupied by the dielectric gas.

Abstract: An actuation and control device for opening and/or closing high- and medium-voltage circuit breakers having at least one fixed contact and at least one moving contact, comprising actuation means which are operatively connected to the moving contact and supply the energy for performing the opening/closure movement, the particularity of which consists of the fact that the actuation means comprise a servomotor, an electronic control and power supply unit, and elements for transmitting motion, and that the actuation means and/or the coupling between the fixed contact and the moving contact are such as to achieve a desired speed of the moving contact at the instant in which it separates from the fixed contact.

Abstract: A gas-insulated switchgear device. A casing is provided with a first connection terminal and a second connection terminal, an interruption unit, and a disconnection unit. The disconnection unit includes a first fixed contact connected to the second connection terminal. A second fixed contact is at ground potential. A third fixed contact is connected to the first connection terminal. A first moving contact can be coupled to the third fixed contact. A second moving contact can be coupled to at least one of the first and second fixed contacts, and is electrically connected to the interruption unit. The second moving contact is rigidly fixed to a rotating actuation element. At least one of the first and second fixed contacts lies on the rotation plane of the second moving contact. The interruption unit includes an interruption chamber having a rotating case with a stationary contact and a mobile contact. A longitudinal axis of the interruption chamber is aligned with the rotating actuation element.

Abstract: A high- and medium-voltage gas-insulated switchgear device having a casing. The casing includes an interruption unit having at least one fixed contact and one moving contact that can couple with each other, and a first actuator that is operatively connected to the moving contact. The casing also includes a disconnection unit electrically connected to the interruption unit. The disconnection unit has at least one fixed contact and one moving contact that can couple with each other, and a second actuator that is operatively connected to the moving contact. At least one of the actuators includes a motor with position control.

Abstract: A control and actuation device for opening and/or closing an electric switching device having at least one fixed contact and at least one movable contact, which includes an actuating device operatively connected to the movable contact and which supplies energy to perform opening/closure. The actuating device includes a motor with position control, which is operatively connected to the movable contact, and a power and control electronic unit which, following a tripping command, sends to the motor electrical signals for driving the motor so that the movable contact achieves a predefined rule of motion.

Abstract: A module for a high- and medium-voltage electric station, comprising: a supporting frame, which has a fixed part and a movable part; first actuation means, which are suitable to move said movable part; first and second sets of three insulating posts, arranged on the fixed part along two corresponding rows; first and second disconnection contacts being respectively associated with the insulating posts of the first and second sets and being electrically connectable, in input and in output with respect to the module, to corresponding electric terminals.

Abstract: An interruption and disconnecting device for high or medium voltage applications including a disconnection chamber and an interruption pole having a casing that delimits a free volume accommodating an interruption chamber. The interruption chamber contains a moving contact and a fixed contact. The interruption pole and the disconnection chamber contain dielectrically insulating fluids. The interruption chamber is sealed with respect to a remaining part of the interruption pole.

Abstract: An actuation and control device for opening and/or closing high- and medium-voltage circuit breakers having at least one fixed contact and at least one moving contact, comprising actuation means which are operatively connected to the moving contact and supply the energy for performing the opening/closure movement, the particularity of which consists of the fact that the actuation means comprise a servomotor, an electronic control and power supply unit, and elements for transmitting motion, and that the actuation means and/or the coupling between the fixed contact and the moving contact are such as to achieve a desired speed of the moving contact at the instant in which it separates from the fixed contact.