| 摘要 |
PURPOSE:To indicate the state of installation and operation of an output voltage switching mechanism with accuracy, and enable feeding at a preset output voltage, by connecting a power breaker that can be closed only when the indication of voltage pilot lamps and the signal from a voltage check switch match with each other. CONSTITUTION:Output cables led from the double-star connection of an engine- driven generator and wiring cables from a power breaker, are connected to the rear of a mechanism. When a low voltage is fed, bus bars 1-6 bring into continuity terminals 11 and 12, 21 and 22, 31 and 32, 13 and 14, 23 and 24, and 33 and 34, respectively. When a high voltage is fed, the bus bars 1-3 bring into continuity the terminals 12 and 13, 22 and 23, and 32 and 33, respectively. In this case the bus bars 4-6 are unnecessary, and the push rod 7a of a detection switch 7 is pressed down and the contact 7b is closed. This makes it possible to grasp the level of output voltage with accuracy and to indicate the state of the output voltage switching mechanism. |
