Abstract: A circuit breaker (100), in particular a medium voltage circuit breaker, having a current (20) and/or a voltage measuring device (30) integrated thereon. The integration can be functional and/or physical. The functionally integrated current and/or voltage measuring device provides primary current and voltage representative signals to an on-board electronic device (50) in order to realize the measure, process, and protection functions as a whole.

Abstract: A method for calibrating voltage sensors in a switchboard, using a communication bus which comprises the following steps: i. performing a measurement using a first voltage sensor; ii. transmitting an information derived from said measurement to an electronic device, through the communication bus; iii. using said information to calibrate a second voltage sensor.

Abstract: A fault current limiting system includes switching means for providing a fast switching operation; a parallel current path comprising a limiting fuse; and a switching system to automatically replace a blown set of fuses with an unblown set of fuses after a fault current limiting operation has occurred. A method of limiting fault current includes providing a fast switching operation; providing a parallel current path comprising a limiting fuse; and automatically replacing a blown set of fuses with an unblown set of fuses after a fault current limiting operation has occurred.

Abstract: A method for designing a power factor controller apparatus for a power distribution network comprising the phases of: configuring, in a predefined computerised support, an interactive computerised environment (2) dedicated to the management of data and/or programming commands (reference 1); and acquiring, in said interactive computerised environment, data related to said power factor controller apparatus (reference 3); and acquiring and/or calculating, in said interactive computerised environment, data related to the power distribution network (reference 4) wherein said power factor controller apparatus is installed; and based on said phase e), calculating, in said interactive computerised environment, the optimal chasing of a power factor target for said power factor controller apparatus (reference 5).

Abstract: A medium voltage switching device includes an electromagnetic actuation chain and a power supply which provides electric power to the electromagnetic actuation chain. The power supply includes at least a first power supply device which is electrically connected to a medium voltage power distribution line, so as to drain electric power directly from the distribution line, and a second circuit configured to store at least the electric energy drained from the medium voltage power distribution line, and to thereby provide the electromagnetic actuation chain with electric power.

Abstract: A method for calibrating voltage sensors in a switchboard, using a communication bus which comprises the following steps: i. performing a measurement using a first voltage sensor; ii. transmitting an information derived from said measurement to an electronic device, through the communication bus; iii. using said information to calibrate a second voltage sensor.

Abstract: A circuit breaker (100), in particular a medium voltage circuit breaker, having a current (20) and/or a voltage measuring device (30) integrated thereon. The integration can be functional and/or physical. The functionally integrated current and/or voltage measuring device provides primary current and voltage representative signals to an on-board electronic device (50) in order to realize the measure, process, and protection functions as a whole.

Abstract: A fault current limiting system includes switching means for providing a fast switching operation; a parallel current path comprising a limiting fuse; and a switching system to automatically replace a blown set of fuses with an unblown set of fuses after a fault current limiting operation has occurred. A method of limiting fault current includes providing a fast switching operation; providing a parallel current path comprising a limiting fuse; and automatically replacing a blown set of fuses with an unblown set of fuses after a fault current limiting operation has occurred.

Abstract: An electric power distribution switchboard (I) in which one or more functional units are equipped with a switching device compartment (3) that integrates primary and secondary functions. Within the switching device compartment (3) are included, together with the switching device (37), the current and voltage sensors (36), the position sensors for interlocking, a human machine interface (HMI) and an Intelligent Electronic Device (IED) (4) and the related local configuration point (32) to configure the IED (4). The IED (4) realizes functional unit supervision, control, protection, communication and monitoring and acts as a concentrating point of functional unit information and decisions. The switchboard (1) of the invention further comprises power supply section, an I/O section and a communication system.

Abstract: An actuation and control device for opening and/or closing an electric switchgear which is connected to an electrical network and has at least one fixed contact and at least one movable contact. The actuation and control device includes an actuator operatively connected to the movable contact to supply the energy to perform opening/closing operations. A measuring mechanism detects the voltage and/or the current of at least one of the phases of the network. The actuator includes a motor with position control, which is operatively connected to the movable contact, and an electronic control and power supply unit which receives information from the measuring mechanism and, following an operation command, sends to the motor electrical signals for driving the motor so that the movement of the movable contact is controlled in relation to a predetermined operation time and to the received information.

Abstract: A medium voltage switching device comprising an electromagnetic actuation chain and power supply means for providing electric power to said electromagnetic actuation chain. The power supply means comprise at least a first power supply device which is electrically connected to a medium voltage power distribution line, so as to drain electric power directly from it, and second circuit means for storing at least the electric energy drained for the medium voltage power distribution line, and for providing said electromagnetic actuation chain with a power supply.

Abstract: A method for controlling the closing operation of a switching device, which is disposed on an electrical network connected to an inductive component. The method requires first data related to the electrical characteristics of the inductive component and the electrical network. Based on the first data, on a predefined first storage device containing opening and closing operation sequences, a first predefined opening operation sequence is selected. Then, based on the first predefined opening operation sequence, on the first storage device, a first predefined closing operation sequence is selected.