| 摘要 |
In a circuit (1) for the power supply of a multitude of consumers (3) who are connected to the same voltage source (M, V+), an operating state switch (45) being provided for each consumer, arranged between him and the voltage source, and the circuit comprising a fuse device (26, 28, 37) which, in the event of excess current or voltage, prevents damage from excessive current consumption from the voltage source, in order rapidly to overcome overvoltage or short-circuit wipers, the consumers are connected to the voltage source via a common main connection line (23, 5; 24, 5), in which there is a controllable, fast-reaction circuit breaker (28), connected in series with the consumers, which circuit breaker (28) opens briefly, automatically, in the event of a defect and is then closed again. If a long-term fault is present, the fast-reaction circuit breaker is opened again and is then not closed again until the consumer exhibiting the fault is isolated from the power supply. The operating state switches can be controlled via switching electronics units (10) from a central unit (37), in accordance with output signals from, e.g. manually operated command keys (8). <IMAGE> |
