Patent ID: 8772963
Filing Date: 2014-07-08
Classification: H02J,Y02B,Y04S

Abstract:
1. A device for supplying uninterruptible power, said device comprising: input connections for connection to a primary DC voltage supply device; standby-power connections for connecting a standby power source; first-output connections for connecting a load; a supply output that is connected in parallel with the first-output connections; a device for decoupling the input connections from the first-output connections and from the supply output in the event of a fault in the primary DC voltage supply device, wherein the device for decoupling comprises a first diode that has i) an anode connection that is directly electrically connected to one of the input connections and ii) a cathode connection that is directly electrically connected to one of the first-output connections; a first controllable switching device for connecting the standby power source to the first-output connections and to the supply output in a controlled manner in the event of a fault in the primary DC voltage supply device, the first controllable switching device comprising a power transistor; a control device that is i) assigned to the first controllable switching device and ii) directly electrically connected to the gate terminal of the power transistor; a current limiter for limiting current to the supply output, wherein the current limiter restricts the flow of current to the supply output to a certain amount, and wherein the current limiter is connected in series with a second diode that is directly electrically connected to the supply output, wherein the second diode passes current from the current limiter to the supply output and blocks current coming from the supply output in order to prevent feedback to the device for supplying uninterruptible power; a second-output connection for connecting a state signalling device; a connection contact for connecting the supply output with the second-output connection, wherein the connection contact is arranged at a predetermined distance from the supply output, and wherein the supply output and the connection contact are capable of being short-circuited by a predefined insertable contact bridge; and a second controllable switching device configured to connect, to each other, and disconnect, from each other, the connection contact and the second-output connection, wherein the second controllable switching device is controlled by the control device.