A method of controlling positive and negative contactors in a high voltage electrical system includes sensing current flowing through each contactor prior to opening of the contactor and/or after closing of the contactor. A negative contactor weighted value is computed based at least partially on the sensed current flowing through the negative contactor during opening and/or closing. A positive contactor weighted value is computed based at least partially on the sensed current flowing through the positive contactor during opening and/or closing. The order of opening and/or closing of the contactors is determined utilizing at least one of the negative contactor weighted value and the positive contactor weighted value.

A boat having an electric motor coupled with an electrical store is disclosed. The electrical store includes a storage element, and positive and negative poles in current-conducting connection with the storage element. An isolating circuit element is operatively connected to a user activatable emergency stop switch. The isolating circuit element is configured to, upon activation of the emergency stop switch, isolate the current-conducting connection between the storage element and at least one of the poles.

A power conversion circuit includes a high-side switch and a low-side switch connected in series with one another and configured to control a load current flowing through a load, wherein at least one of the high-side switch and the low-side switch comprise a power relay circuit for switching the load current, and wherein the power relay circuit comprises a micro-electro-mechanical system switch, and a semiconductor power switch, wherein the MEMS switch and the semiconductor power switch are connected in series with the load.

A control system may include a processor that may receive a first dataset associated with a type of load device coupled to a relay device. The processor may then receive a second dataset associated with one or more operations of the load device over a period of time. The processor may also determine a switching profile to control moving an armature of the relay device between a first position and a second position based on the first dataset and the second dataset, such that the switching profile comprises a firing angle for moving the armature with respect to an electrical waveform. The processor may then control a current provided to a relay coil of the relay device based on the switching profile.

Disclosed are a circuit with a timing function and a leakage protection plug. An output terminal of a timing chip U2 is connected to an isolating switch U3; the isolating switch U3 is connected to a rectifier module D3; the rectifier module D3 is connected to a circuit breaker X1; a switch tube Q4 and the switch tube Q3 are connected to a resistor R21, and a second switch terminal of the switch tube Q4 is grounded; an output terminal of a zero sequence current transformer is connected to a first input terminal of a microprocessor U1; and an output terminal of the microprocessor U1 is connected to a control terminal of the switch tube Q4. The leakage protection plug of this disclosure has both leakage protection and timing functions.

A power accumulation system includes a power accumulation device, a relay device provided in a pair of power lines disposed between the power accumulation device and a power conversion device that exchanges power with the power accumulation device, a capacitor provided between the pair of power lines between the relay device and the power conversion device and an electronic control device that controls the relay device. The electronic control device is configured to execute a predetermined foreign matter removal process when it is not possible to bring one of a first relay and a second relay from a power blocking state to a conductive state.

The invention relates to a safety-related switching device (10) which is equipped with an electromagnetic coil (12), a control unit (20) and a first switching means (22). The first switching means (22) is designed to activate and deactivate the electromagnetic coil (12). Moreover, the first switching means (22) is designed to receive a coil control signal (24), a monitoring signal (32) and a first higher-level control signal (26). The safety-related switching device (10) also has a receiver unit (40) for receiving an external control signal (29). The receiver unit (40) is designed to generate the first higher-level control signal (26) and a second higher-level control signal (28) from the external control signal (29). The control unit (20) is designed to receive the second higher-level control signal (28).

A control unit includes: an input portion that receives the positional information of a vehicle; a calculation unit that generates a control signal for controlling an electromagnetic relay; and an output portion that outputs the control signal to the electromagnetic relay. The calculation unit determines whether a location region of the electromagnetic relay is a relay-freeze region, the location region being identified by the positional information of the vehicle, and, when the location region of the electromagnetic relay is a relay-freeze region, performs a freeze inhibiting process for preventing the electromagnetic relay from being frozen or defrosting the electromagnetic relay by opening and closing the electromagnetic relay and causing the electromagnetic relay to vibrate.

A multi-level feedback actuator assembly for a circuit breaker assembly including an interlock system. The interlock system for the multi-level feedback actuator assembly is structured to maintain the multi-level feedback actuator assembly, and elements thereof, in a safe configuration. The interlock system for the multi-level feedback actuator assembly includes an interlock assembly structured to configure the rotary solenoid and at least one of the first actuator or the second actuator in a safe configuration.

When an outlet is shut off, an ECU monitors whether a restoration condition for restoring the outlet is satisfied. When the restoration condition is not satisfied, the ECU shifts a process to return. When the restoration condition is satisfied, the ECU restores the outlet for which the restoration condition is satisfied. As the restoration condition, a condition that an external device connected to the outlet is removed with the outlet being shut off or a condition that the external device connected to the outlet is removed and then the external device is connected to the outlet with the outlet being shut off can be adopted.