Abstract: A system having a field bus coupler, a first module and a second module is provided. The field bus coupler includes a first field bus interface to a field bus and a first sub-bus interface to a sub-bus. The first module includes a control interface for connection to a control bus, a second sub-bus interface for communication with the field bus coupler and a first control output. The second module includes a control input and a power output. The first module is configured to derive a control signal from a signal which is received via the control interface during operation, and the second module is configured to control the power output of the second module in coordination with the control signal received via the control input.

Abstract: A multi-level power converter comprising: n input stages (Ein_n), n being at least equal to 1, each input stage comprising n+1 identical input converters (CONVx_En) connected together, the input converters (CONVx_En) exhibiting an identical topology, chosen from among the architectures of the NPC (Neutral Point Clamped), ANPC (Active Neutral Point Clamped), NPP (Neutral Point Piloted) and SMC (Stacked Multicell Converter); an output stage (Eout) connected to the input stage of rank 1 and comprising an output converter (CONVs) supplied with a differential voltage (Vfloat) resulting from a first electrical potential applied to the output of a first input converter of the input stage of rank 1 and from a second electrical potential applied to the output of a second input converter of the input stage of rank 1, the output converter (CONVs) exhibiting a topology chosen from among an architecture with floating capacitor (FC), SMC (Stacked Multicell Converter), NPC (Neutral Point Clamped), NPP (Neutral Point Piloted

Abstract: A rocker switch unit (1) with fuse comprising a housing (2); a rocker switch (3) lodged pivotally in the housing (2); at least a fuse lodged in the housing (2) and at least two connection elements (9) for connecting the rocker switch unit (1) with an external apparatus, wherein the two connection elements (9) are connected to each other by the fuse, when rocker switch (3) is in an ON-position. According to the invention the housing (2) provides at least one blind hole (4) for accommodating the fuse, wherein one terminal of the fuse serves as a first connection element for connecting the rocker switch unit (1) with the external apparatus. The rocker switch unit 1 can be used in any apparatus, in a network filter or as IEC entry plug.

Abstract: A multi-pole load break switch having two sets of contacts in each pole connected in series to isolate its fuse. Also disclosed is a circuit incorporating the switches of the invention in a double-ended switch board having two power supplies normally isolated from each other.

Abstract: A circuit breaker for an electric device has a pair of switching pieces, an electric circuit for supplying electric power to the device, an arrangement for opening the electric circuit, an arrangement for locking the switching pieces to normally close the electric circuit, a drive connected in parallel with the power source via a gate for releasing the locking arrangement, and a terminal piece located in the device and connected to the electric circuit by a cord. The cord picks up leakage current in the device to turn the gate on by the leakage current when the device becomes immersed in water. The turning on of the gate effects the release of the locking arrangement, so that the switching pieces open the electric circuit.

Abstract: A high current switch includes first and second contact plates, each having a contact surface. The contact plates are moved between a closed position with the contact surfaces in contact and an open position with the contact surfaces separated. An electric bridge has opposite ends connected to the contact plates and spans the contact surfaces. During opening of the switch, the electric bridge, in the form of a fuse, remains integral and provides a secondary electrical connection between the contact surfaces, thus preventing arcing therebetween. Upon complete opening of the switch, the electrical bridge ruptures.

Abstract: A circuit interrupting device is disclosed. A stationary contact is mounted within a stationary hollow insulator and connected to one side of an electrical circuit. A movable contact normally engages the stationary contact and is mounted for movement within the stationary hollow insulator. The movable contact is connected by a contact rod that extends through an opening in the insulator to a set of spring detent fingers. The spring detent fingers electrically and mechanically engage the end of a movable conductive element, such as a power fuse or disconnect switchblade, which is connected to the other side of the electrical circuit. A spring biases the movable contact toward engagement with the stationary contact. When the movable conductive element is moved away from the device, the spring detent fingers grip the element and cause the movable contact to move to disengage the stationary contact.

Abstract: This load-break fuse equipment comprises two draw-out fuse assemblies, one of the load-break type and one of the non-load-break type, each removably mounted in its own individual receptacle. The load-break fuse assembly and its receptacle comprise a load-break switch and a fuse electrically connected in series with each other. The non-load-break fuse assembly comprises a fuse, and this fuse is electrically connected in parallel with the fuse of the load-break fuse assembly and in series with said load-break switch.

Abstract: A lightning arrester is mounted on one end of a rigid insulator bar, the other end of which is mounted by a metal bracket to the grounded casing of an electrical distribution transformer. The ground terminal of the arrester is electrically connected with a terminal on the insulator bar intermediate the arrester mounting and the transformer mounting. A switch is remotely operable to establish electrical communication between the transformer casing and the intermediate terminal, and thus to the ground terminal of the lightning arrester.