An Electrostatic Discharge (ESD) protection circuit includes a first discharge path and a second discharge path. The first discharge path is located between a first potential terminal and a second potential terminal. The second discharge path is located between the first potential terminal and the second potential terminal, and is connected to the first discharge path in parallel. The first discharge path and the second discharge path are used for discharging electrostatic charges. At least one of the first discharge path and the second discharge path includes a Silicon Controlled Rectifier (SCR).

Techniques for enabling multi-pack and component connectivity detection are provided. In some configurations, individual PCMs can test the connectivity between components of a device without the need to operate the components. For example, PCMs configured in accordance with the present disclosure can test the connectivity between a motherboard, a display circuit, a camera, and a number of battery packs without the need to operate the motherboard, display circuit, camera, etc. In some configurations, conductors that are part of cables and connectors used to connect the components can be used to determine the state of one or more connections. When a signal that runs through the conductors meets one or more criteria, the PCMs of a device cause a predetermined delay prior to enabling one or more components. By testing the connectivity between components before each component transitions to an operational state, other problems caused by faulty connections can be mitigated.

In some examples, a device includes a memory configured to store a pre-warning threshold level for a parameter of a power switch. The device also includes a logic circuit configured to receive a signal from a controller and set the pre-warning threshold level in response to receiving the signal from the controller. The logic circuit is also configured to determine that a magnitude of the parameter of the power switch does not satisfy the pre-warning threshold level. The logic circuit is further configured to output an alert to the controller in response to determining that the magnitude of the parameter does not satisfy the pre-warning threshold level.

A system for a wind turbine that includes a protection system interfaced to a circuit breaker system and a sensing system. The protection system is configured to determine an operational mode of the wind turbine by monitoring at least two parameters determine a parameter set comprising a plurality of operational parameters based on a determined operational mode, and an associated set of expected values corresponding to the parameter set, determine actual values corresponding to the determined parameter set, identify a fault condition in the event that the determined set of actual values of the operational parameters do not correspond to the determined set of expected values of the operational parameters, and implement a protection action based on the identified fault condition.

In a method for protecting lines, in which a reactor device for reactive power compensation is provided on an electrical line, a resonant current is measured on the line side of the reactor device by a first measuring device after an opening of a circuit breaker. A voltage is measured by a second measuring device after the opening of the circuit breaker. A current in the reactor device is calculated by an evaluation device on a basis of the measured voltage, and the calculated current is subtracted from the measured resonant current by the evaluation device in order to obtain a corrected current.

An electronic circuit breaker provides waveform data wirelessly and alters a breaker code wirelessly. The breaker comprises a transceiver to wirelessly transmit information including waveform data, a microcontroller including a processor and a memory and computer-readable firmware code stored in the memory which, when executed by the processor, causes the microcontroller to: monitor in real-time breaker functional parameters to determine parametric modifications, wirelessly transmit the information that was saved previously in the electronic circuit breaker about the one or more breaker functional parameters to a remote device with a graphical user interface, alter a breaker algorithm after analyzing load data of problematic electrical loads in a mobile application (APP) of the remote device to treat the problematic electrical loads as normal and safe and test the computer-readable firmware code with a problematic electrical load to make sure the electronic circuit breaker doesn't still trip on the problematic electrical load.

A flexible circuit breaker includes at least two semiconductor switches, at least one input and at least two outputs. Each of the at least two semiconductor switches can carry a defined current, and each of the at least two semiconductor switches is monitored individually in relation to the current flowing therethrough, the first output is assigned to a first semiconductor switch, where by a selection using a selection device on the flexible circuit breaker, one can select whether the current flowing through a second semiconductor switch is assigned to the second output or the first output.

An overcurrent detector with an electric line and a sensor for monitoring an electric current in the line and outputting a measurement signal, and an integral-unit adapted to integrate an interval of consecutive values of the measurement signal and outputting an integrator-signal, the detector comprises a comparator unit for comparing a value of the integrator-signal with a threshold level and outputting a trigger signal, with the detector further comprises a threshold level determination unit, an input being connected to the sensor for receiving an actual measurement signal, and with an output being connected to the comparator unit, proving the comparator unit with the threshold level, and that the threshold level determination unit is adapted to determine the threshold level in dependence on the value of the actual measurement signal.

Methods and apparatus to implement safety applications associated with process control systems are disclosed. An apparatus includes a configuration controller to: provide a plurality of available safety applications for implementation by a safety trip device to a user for selection, a first one of the safety applications associated with a first set of I/O signals, a second one of the safety applications associated with a second set of I/O signals, the first safety application implemented based on first pre-programmed instructions stored in memory of the safety trip device, the second safety application implemented based on second pre-programmed instructions stored in the memory; and, in response to a user selection of the first safety application, prompt the user to specify values for configuration settings associated with the first safety application. The apparatus also includes an I/O analyzer to implement the first safety application.

An electrical circuit protection device a processor-based controller configured to operate at least one solid state switching element in a manner responsive to a variety of different time-current conditions to protect a plurality of different electrical loads. A field deployable adaptor device is configured to communicate with the controller. The controller is configured with at least one pre-preprogrammed control algorithm or at least one selected setting for a control algorithm executable by the controller. At least one pre-preprogrammed control algorithm or at least one selected setting are predetermined by a manufacturer of the circuit protector device.