A direct current electric circuit interrupting switch assembly is disclosed that comprises a pyroswitch assembly, which comprises at least two pyroswitches, which are connected in parallel with each other and are each per se integrated in its respective electrically conductive branch together forming a second branch of the primary electric conductor the switch assembly, with a first, preceding pyroswitch and a second, subsequent, or last pyroswitch. Each of said pyroswitches comprises an interrupting member, by means of which each circuit with each of the pyroswitches is either connected during normal operation or is interrupted by displacing each corresponding interrupting member into another position, when a pre-determined condition is met.

The present invention relates to a contactor device for high voltage applications, an energy storage system comprising the contactor device and a corresponding method for controlling the contactor device. A contactor device (100) comprises at least one fixed contact (106), at least one moveable contact (108), which is configured to move between an open position and a closed position, wherein in the closed position, the at least one moveable contact (108) electrically contacts the at least one fixed contact (106), and at least one first actuator (110, 120), which is configured to reversibly move the at least one moveable contact between the open position and the closed position. The contactor device (100) further comprises at least one second actuator (202) which is configured to move the at least one fixed contact (106) into a fired position, wherein in the fired position, the at least one fixed contact (106) is permanently disconnected from the at least one moveable contact (108).

A fusing apparatus including a main connection member provided on a main path and having one side and the other side electrically connected to the main path, respectively, a sub connection member provided on a sub path and having one side and the other side electrically connected to the sub path, respectively, and a shifting member provided between the main connection member and the sub connection member and configured to be moved and coupled from the main connection member to sub connection member to shift a connection relation from a connected state of the main connection member to a connected state of the sub connection member.

An electric circuit breaker device includes: an igniter; a projectile that is disposed in a movement path, the projectile formed to be movable by actuation of the igniter; and a conductor piece that forms one portion of a predetermined electric circuit, the conductor piece having both end portions connected to respective other portions of the predetermined electric circuit, the conductor piece having a first portion between both the end portions arranged to traverse the movement path. A sensor is connected to a first part positioned between both the end portions and to a second part that is between both the end portions and is different from the first part, the sensor configured to detect current flowing through the conductor piece between both the end portions, the sensor disposed to be integrated with the conductor piece. The actuation of the igniter is controlled, based on the current detected by the sensor.

The present disclosure refers to a switch for interrupting of a circuit in which two voltage sources and at least one load are connected, wherein the switch actuate quickly in an emergency. The switch includes a main conductor connecting both electric voltage sources and said load, bridged by a supplemental conductor which is in parallel with the two voltage sources and the load, and prior to activation of the switch, interrupted and electrically open. A branch with an integrated fuse is in parallel with the main conductor and linked at two connecting points between the two electric voltage sources while the connecting points includes a movable section which under pre-determined conditions moves from contact with the main conductor into an alternate position in contact with the supplemental conductor, resulting in an open circuit across the main conductor and a closed circuit across the supplemental conductor.

The invention relates to a current breaker in which a busbar (18) passes through a cavity (25) in which a piston (14) can be moved. By moving the piston (14), a circuit board (19) is broken out of the busbar (18), thus interrupting the current flow. The current breaker has at least one metal filter element (16) which, according to the invention, extends up to the cavity (25). This ensures that the disconnected circuit board (19) touches the at least one filter element (16) during tripping. After the circuit board (19) is separated from the busbar (18), an electric arc is formed which, due to the filter element (16) being touched by the circuit board (19), switches over to the metal filter element (16) when the circuit board (19) continues to move, as a result of which the energy from the system inductance is converted into heat loss in the filter element (16). When suitably designed, there is only a moderate increase in pressure in the current breaker and thus practically no external effect. Additionally, an extinguishing agent, e.g. a silicone oil or a silicone-containing grease, may be provided. The housing can be sealed and the filter elements (16, 16′) can be insulated from the exterior.

A circuit breaker system is provided; the circuit breaker system comprises of a transformer, a capacitor, a pulse generator, a EBWF fuse and a VCB, the circuit breaker system can interrupt rated load current, overload current, surge load current and short-circuit load current within 100 microseconds. The on-state voltage drop of the circuit breaker system is below 0.1V. The circuit breaker system interrupts load current by injecting a non-resonant pulse current to reduce the current between the contacts of the VCB, and circuit breaker system interrupts higher load current by detonating the EBWF fuse to force an open-circuit. The EBWF fuse comprises a detonator in the low terminal and a contacting bellows in the upper terminal. The EBWF fuse can be engaged and dis-engaged by a fuse holder system.

In one aspect, the application provides an electrical system including a conductor, a ground, an arrester electrically connected to the conductor, and a disconnector assembly electrically connected between the arrester and the ground. The disconnector assembly includes an isolator configured to perform an operating function in response to the occurrence of an event and a housing configured to surround the isolator. The isolator includes a first terminal electrically connected to the arrester by a first wire and a second terminal electrically connected to the ground by a second wire. The housing includes a first opening through which the first terminal extends, a second opening through which the second terminal extends, and a retention mechanism configured to hold the isolator in place relative to the arrester.

Summary

The present invention relates to a process for providing a predetermined pyrotechnic energy output, comprising a pyrotechnic material that pyrotechnically converts at a material-specific conversion temperature, and communicating heat to the pyrotechnic material to convert the pyrotechnic material at an ambient temperature of the pyrotechnic material that is less than the conversion temperature.

A circuit breaker system is provided; the circuit breaker system comprises of a transformer, a capacitor, a pulse generator, a EBWF fuse and a VCB, the circuit breaker system can interrupt rated load current, overload current, surge load current and short-circuit load current within 100 microseconds. The on-state voltage drop of the circuit breaker system is below 0.1V. The circuit breaker system interrupts load current by injecting a non-resonant pulse current to reduce the current between the contacts of the VCB, and circuit breaker system interrupts higher load current by detonating the EBWF fuse to force an open-circuit. The EBWF fuse comprises a detonator in the low terminal and a contacting bellows in the upper terminal. The EBWF fuse can be engaged and dis-engaged by a fuse holder system.