Abstract: A low voltage electrical switchboard comprising a supporting structure having vertical uprights and horizontal crossbars and further comprising a busbar compartment housing one or more busbars and an apparatus compartment housing one or more electrical apparatuses, said busbar compartment and said apparatus compartment being separated by a partitioning and insulating wall, characterized in that said partitioning and insulating wall has a first surface facing said busbar compartment which is provided with a plurality of retaining and supporting means for said busbars, and a second surface facing said apparatus compartment which is provided with a plurality of openings for insertion/extraction of first connection means between said busbars and said one or more electrical apparatuses through said partitioning and insulating wall, said first connection means being provided with first insulation means that cooperate with said partitioning and insulating wall to increase the distance in air between the phases durin

Abstract: The present application provides a residual-current protection device and a tripper. The residual-current protection device comprises: a flux transformer receiving a residual-current signal; a tripping output element outputting ON/OFF signals; an energy storage mechanism adapted to switch between an energy storage state and an energy release state, the energy storage mechanism having a locking unit that locks the energy storage mechanism in the energy storage state; and a transmission mechanism braked by the flux transformer, which drives the tripping output element to move and drives state of the energy storage mechanism to switch; the transmission mechanism comprising: a first rack cooperating with the locking unit, a second rack driving the tripping output element, and a reduction gear with a big gear engaged with the first rack and a small gear engaged with the second rack.

Abstract: A compartment-partitioning and busbar-supporting device for a cabinet for a low voltage electrical switchboard an insulating body having a substantially rectangular shape with a first surface configured for coupling with one or more busbars and a second surface configured for coupling with one or more electrical apparatuses, said first and second surfaces being delimited by a first and a second opposite side substantially parallel to each other and configured for coupling with a vertical uprights or horizontal crossbars of the supporting structure of the low voltage electrical switchboard, and a third and a fourth opposite sides substantially parallel to each other and perpendicular to said first and second opposite sides and configured for allowing vertical stacking of a plurality of said compartment-partitioning and busbar-supporting devices in correspondence of said third and fourth opposite sides, said first surface being provided with a plurality of retaining pairs of first and second retaining means fac

Abstract: The present disclosure relates to a withdrawable base module for a switch. The withdrawable base module comprises a base coupled to a busbar for electrically connected to the switch; a conversion assembly coupled to the base and comprising a drive mechanism, a first female contact and a carrying mechanism adapted to carry the switch; and an auxiliary assembly being slidable relative to the conversion assembly and comprising a first male contact electrically connected to the switch; wherein the drive mechanism is operable to drive the auxiliary assembly to cause the first male contact to move towards and contact the first female contact. The withdrawable base module according to embodiments of the present disclosure can provide a test circuit for the switch, and can achieve the rocking-in or rocking-out of the switch without additional human intervention after completion of the test.

Abstract: A computerized system for managing the operation of an electric power distribution grid wherein it includes: at least an accessory device operatively coupled with or comprised in an electronic protection relay of the electric power distribution grid, wherein the accessory device is configured to gather grid data, which are related to the operation of the electric power distribution grid, from one or more electronic devices of the electronic protection relay or operatively connected with the electronic protection relay, which are in communication with the accessory device, wherein the accessory device is configured to transmit the grid data through the Internet; a computerised platform capable of communicating and interact with the at least an accessory device through the Internet; and a configuration computerized unit capable of communicating with the accessory device and the managing platform through the Internet, the configuration computerized unit being adapted to execute a configuration method of the at l

Abstract: Systems, methods, techniques and apparatuses for configuring load shed controllers are disclosed. One exemplary embodiment is a method comprising providing a graphic user interface on a computer display; providing first, second, third, and fourth graphic resources on said graphic user interface; checking whether said load shedding controller meets minimum operating requirements to operate; if said load shedding controller meets said minimum operating requirements, transmitting configuration information including at least first and second configuration values to said load shedding controller; and controlling, with the load shedding controller, the one or more of the electric loads based on the first and second configuration values. The third graphic resources assist a user in providing first configuration values to configure grid operating parameters. The fourth graphic resources assist a user in providing second configuration values to configure load operating parameters.

Abstract: A method for configuring an electronic relay including: providing a graphic user interface on a computer display, the graphic user interface including graphic resources activatable by a user; providing first graphic resources on the graphic user interface to assist a user in providing first configuration values to configure first operating parameters indicative of the operation of at least one of the first and second live electric circuits, the first operating parameters being processed by the electronic relay to provide synchro-reclosing functionalities; providing second graphic resources on the graphic user interface to assist a user in providing second configuration values to configure second operating parameters indicative of first operating conditions requested to the first and second live electric circuits to enable a re-connection between the first and second live electric circuits following a disconnection between the first and second live electric circuits, the second operating parameters being proce

Abstract: A transceiver device comprises a transceiver unit including an RF antenna, a serial communication port operatively coupleable with a further corresponding serial communication port of a protection and control device, a serial communication bus electrically connected between said serial communication port and said transceiver unit and having a transmission line and a reception line, a battery unit, and a feeding unit to feed said transceiver unit with a feeding voltage. The feeding unit comprises a first power supply stage electrically connected with said battery unit to harvest electric power from said battery unit and a second power supply stage electrically connected with the transmission line of said serial communication bus to harvest electric power from said transmission line, when said transmission line is said stand-by condition and takes an high-level voltage value.

Abstract: An accessory device for an electronic protection relay comprising: a first communication port for communication with one or more electronic devices of the electronic protection relay or operatively connected with the electronic protection relay; a second communication port for communication with one or more computerized units through the Internet; a first processing means to manage the operation of the accessory device, the first processing means being operatively coupled with the first and second communication ports. The accessory device is configured to execute a data-gathering procedure (DGP), in which the accessory device polls one or more electronic devices, which are in communication with the accessory device through the first communication port, and receives grid data (D), which are related to the operation of an electric power distribution grid including the electronic protection relay, from the electronic devices in response to the polling.

Abstract: The present application relates to a coil actuator for low and medium voltage applications, which comprise a electromagnet operatively associated with a movable plunger, a power & control unit electrically connected with the electromagnet and first and second input terminals (T1, T2) operatively connected with the power & control unit, wherein an input voltage (VIN) is applied between the first and second input terminals during the operation of the coil actuator. The power & control unit is adapted to provide subsequent launch pulses of drive current (IC) to the electromagnet, which are separated in time by at least a predetermined time interval (TI), in response to subsequent transitions of the input voltage (VIN) from values lower than the first threshold voltage (VTH1) to values higher than the first threshold voltage.

Abstract: Unique systems, methods, techniques and apparatuses of inrush current detection and reduction are disclosed. One exemplary embodiment is a method for transmitting power to a load comprising operating a solid-state switching device of a power distribution network device with a microcontroller-based controller, the solid-state switching device including a gate and structured to receive a signal with the gate so as to control the switching device to receive power from a power source and selectively provide power including an output current to the load; detecting an overcurrent condition in the output current; operating the solid-state switching device in order to determine the load is a capacitive load in a charging condition in response to detecting an overcurrent condition; and operating the solid-state switching device so as to reduce the magnitude of the output current during the charging condition.

Abstract: An electrical quantity measuring system includes an electrical circuit of an electrical distribution network and an electrical quantity measuring apparatus. The apparatus includes a synchronization module structured to generate a synchronization signal; and a first measurement apparatus connectable to an electrical circuit and structured to receive the synchronization signal and provide a first Fourier transform coefficients representing a first electrical quantity associated with the electrical circuit and a first delay value depending on a time offset between a measurement instant associated with the measure of the first electrical quantity and a reception instant of the synchronization signal at the first measurement apparatus. The measuring apparatus also comprises a processing module structured to process the first Fourier transform coefficients and the first delay value and provide first time-shifted Fourier transform coefficients representing a first synchronized measured electrical quantity.