The present invention discloses a data transmission apparatus of a circuit breaker controller. The data transmission apparatus comprises: a first component having a first power supply and a second component having a second power supply. The first component and the second component share a storage device. The second component is connected to a main circuit of the circuit breaker controller. The second component collects parameters of the main circuit and stores the parameters in the storage device. The second power supply powers the second component and is powered by the main circuit. The first component is connected to a communication device. The first component establishes data transmission between the communication device and the storage device. The first power supply powers the first component and is powered by an external power supply. The second power supply is connected to the first power supply and transmits a control signal to the first power supply.

The method for controlling selectivity of electric equipment comprises: communication of electric equipment settings between at least one electric equipment unit and a data processing device, computation of the selectivity of electric equipment according to said electric equipment settings, storing and communication of data representative of the selectivity settings and data, supervision of changes of settings and/or of changes of equipment, and checking of the compatibility between new settings after a change and the selectivity computation. The device and installation comprise means for implementing the selectivity control method.

The present invention concerns a node of an HVDC grid composed of HVDC nodes and of a plurality of links interconnecting the HVDC nodes, each HVDC node being interconnected to at least one HVDC node of the HVDC grid by a link composed of conductive cables for high voltage direct current transportation and one optical fiber, at least one HVDC node being interconnected to at least two HVDC nodes, each HVDC node comprising, for each link connecting the HVDC node to the at least one other HVDC node, a link module comprising a fault sensing device, a breaker, and an optical transceiver for communicating through the optical fiber of the link.

A method for analyzing power quality events in an electrical system includes processing electrical measurement data from or derived from energy-related signals captured by at least one of a plurality of metering devices in the electrical system to generate or update a plurality of dynamic tolerance curves. Each of the plurality of dynamic tolerance curves characterizes a response characteristic of the electrical system at a respective metering point of a plurality of metering points in the electrical system. Power quality data from the plurality of dynamic tolerance curves is selectively aggregated to analyze power quality events in the electrical system.

In a method of warning of a hazardous electrical condition at a dock with wiring coupled to a voltage source via a dock breaker, an electric voltage between a ground and at least one of the dock frame or the water is detected. A plurality of voltage values of the electric voltage is stored. When at least two successive voltage values of the plurality voltage values exceeds a baseline safe voltage by a preset margin, then a shock warning signal is asserted, a dock breaker is opened and a shock warning indication is transmitted to a remote unit via a communication chipset. When at a voltage is sensed in the dock wiring system after the dock breaker has been opened, then a faulty dock breaker warning indication is transmitted to the remote unit via the communication chipset.

A circuit breaker with a switching path has at least one line interruption apparatus, wherein the circuit breaker has a disconnection unit and a connection unit which are each connected to the line interruption apparatus. The switching device has at least one measuring arrangement for measuring at least one electrical variable on the at least one switching path. The disconnection unit further has a comparison and decision unit, which comparison and decision unit is connected to the measuring arrangement and to the line interruption apparatus. The circuit breaker has a first data interface, which first data interface is designed to receive at least one connection command and/or one disconnection command, and wherein the first data interface is connected to the disconnection unit and the connection unit.

A safety input device for use in a single-wire safety system comprises a fast-switching architecture that allows a safety signal to propagate through the safety device to downstream devices with negligible delay. Rather than placing the signal processor in-line between the signal input and output terminals of the safety device, an electronic switch is placed between the input and output terminals. A signal processor in parallel with the switch monitors the incoming signal and closes the switch if the safety signal is absent, effectively shorting the input and output terminals and allowing the incoming safety signal to pass substantially instantaneously. Loss of the safety signal at the input terminal is immediately reflected by the loss of safety signal output at the output terminal, eliminating processing delay between loss of the safety signal at the input terminal and cessation of the output signal at the output terminal.

Provided is an apparatus and method for protecting against unsafe electric current conditions. A protections circuit may be used in a device, such as an electric grill, that has one or more electric loads, such as heating elements. The protection circuit may protect against various failure scenarios, including, without limitation, instances of ground fault, over current, driver failure, and failure of a microprocessor. The microprocessor may further be in wireless communication with a remote device and wirelessly communicate error codes indicative of an error, and receive control signals from the remote device for controlling temperature or turning the grill off. The remote device may also receive operating parameters and create a log of the electric grill's conditions at the time of an error.

The invention relates to a method for evaluating the state and the quality of low-voltage networks, in the branched system of which there is a plurality of connected loads, by determining network measurement data by means of power quality measuring and testing devices and transferring the network measurement data, by means of a standard interface, to a control system or in retrievable form to a server. According to the invention, the overvoltage protection devices, which are or can be used in the low-voltage system and have a self-diagnosis unit and an existing wireless or wired standard interface for data transfer, are able to determine network measurement data by means of integrated or adapted power quality measuring and testing devices.

A selectivity module for dividing a load current in an installation system includes a housing, a plurality of branches in the housing, a plurality of switching devices, and a control unit. Each of the plurality of switching devices is configured for switching a branch current on and off in a corresponding one of the plurality of branches. The plurality of switching devices serves to output information about corresponding switching states. The control unit is connected to the plurality of switching devices and configured to output a status signal as a function of the output information from the plurality of switching devices. The output information relating to the individual switching states of all of the plurality of switching devices is contained in the status signal in a serial encoded form.