The present disclosure relates to a relay examination device and a battery management system including the same, the relay examination device includes a first resistor unit having one end connected to one end of a relay, a second resistor unit having one end connected to the other end of the first resistor unit, a power unit connected to the other end of the second resistor unit and configured to supply power, and a control unit configured to receive a voltage signal applied between the first resistor unit and the second resistor unit and to examine whether the relay is open or closed or whether the relay has malfunctioned.

A load management system including a number of sensors structured to sense characteristics of a managed area, a controller including a processor structured to estimate occupancy of the managed area based on outputs of the number of sensors and to implement a load management scheme, a number of circuit breakers, at least one of the number of circuit breakers being electrically connected to a corresponding load circuit and including a metering circuit structured to meter energy provided to the load circuit and a device control unit structured to control one or more load devices electrically connected to the load circuit based on the load management scheme. The processor is structured to implement the load management scheme based on outputs of the sensors and metering information of one or more of the circuit breakers.

Systems, devices, and methods including: a relay, the relay including: at least one contact; a reflector attached to at least one contact; a sensor, the sensor including: an emitter configured to emit a pulse; a detector configured to receive a portion of the emitted pulse; where the reflector may be configured to reflect at least a portion of the emitted pulse to be received by the detector when the at least one contact may be in at least one of: an open position and a closed position.

Systems, apparatuses, and methods are described for thermal fuse circuit breakers. The thermal fuses described herein may be disposed in a connector, so that, should an overheating condition occur, for example, due to an arc discharge across or inside of the connector, the heat of the arc discharge melts a portion of the fuse, thereby preventing a potentially catastrophic event, such as fire, or damage to a component which may be more expensive than the thermal fuse itself.

A smart switch allows distributed generators to “ride through” non-three-phase faults by very quickly detecting a non-three-phase phase fault, locating the fault, identifying the “responsive sectionalizer switches” that will be involved in clearing or isolating the fault, and selecting one of the responsive sectionalizer switches to direct back-feed tie switch operations. The responsive sectionalizer switches trip only the faulted phase(s), and the selected sectionalizer switch instructs a back-feed tie switch to close to back-feed the distributed generators prior to conducting the typical fault response operation. This typically occurs within about three cycles, and is completed before the normal fault clearing and isolation procedures, which momentarily disconnect all three phases to the distributed generators from the normally connected feeder breaker. The looped connection to an alternate feeder breaker during these operations allows the distributed generators to “ride through” the normal fault clearing and isolation procedures.

A foot switch (1, 26) for use with a medical device (16, 27, 28) comprises an interface (10) for a communications link between the foot switch (1, 26) and a control unit (12) of the device (16, 27, 28) and comprises at least one pedal (2, 3) for operating the foot switch (1, 26) using a foot. An operation sensor (17) captures an operation of the foot switch (1, 26) for switching a function of the medical device (16, 27, 28). The control unit (12) assigns the function to the pedal (2, 3) via the interface (10) and the assigned function is displayed on the foot switch (1, 26) by a multicolor LED (4, 5).

A redundant and dissimilar system for monitoring the status of contactors of an aircraft control stick. This monitoring system comprises at least one electrical power source, at least one processor and several circuits for monitoring the status of the switches of the contactors. Each monitoring circuit comprises and electrical power source, a switch for each contactor, the switches of a contactor being connected to each other, and an electronic assembly provided with receivers arranged in series with each other. Each switch is arranged in parallel with at least one receiver so as to short-circuit the at least one receiver when the switch is in the closed state. Each processor measures and analyses an electrical feature of the electronic assembly, such as a mains voltage VE as the terminals of the electronics assembly, in order to determine the status of each switch.

An apparatus for an electrical control assembly having at least one control member that is electrically connected to an electrical component, the at least one control member supported by an attachment assembly, which is disposed in a cavity of the electrical control assembly and includes a recess, the at least one control member movable between a first position and a second position is disclosed. The apparatus includes a structural assembly that is removably insertable in the recess of the attachment assembly, a through-beam emitter having an emitter member that is attached to a first end portion of the structural assembly and a receiver member that is attached to a second end portion of the structural assembly, the emitter member aligned to emit a light beam along a straight line of sight to the receiver member, and an electrical circuit.

An electrical disconnecting device comprising a housing, a first terminal lug (4a) inserted into the housing, a second terminal lug (4b) inserted into the housing, a current path forming between the first and second terminal lugs (4a, 4b) in a closed state, a separation point (6) spatially located between the terminal lugs, the separation point (6) disconnecting the current path between the terminal lugs (4a, 4b) in the separated state, a actuator (8) influencing a separation of the separation point (6), a channel formed in the housing between the actuator (8) and the separation point (6), the actuator closing the channel on a side facing away from the separation point, and a connecting element which is arranged on the side of the actuator facing away from the channel and accommodates at least two electrical connections of the actuator, characterized in that the connecting element accommodates at least two contact elements of a switching path, in that the contact elements are each guided into the channel via connecting webs and are short-circuited to one another in the channel at a connecting point in such a way that, when the actuator is triggered, the connecting point is moved away from the contact elements, so that the connecting webs are mechanically disconnected.

The invention relates to a system (1) comprising a medical technology device (10) controllable via a foot switch (20), and a foot switch (20), wherein the foot switch (20) comprises a transmitter and the medical technology device (10) comprises a receiver for the wireless transmission of unambiguously assignable signals for the control from the foot switch (20) to the medical technology device (10), and wherein the receiver of the medical technology device (10) is designed to measure the signal strength of signals from the foot switch (20), and the medical technology device (10) is designed to emit a warning if the measured signal strength or the signal-to-noise ratio lies below a predefined threshold value.