| 摘要 |
PURPOSE: To construct a high voltage electric circuit changeover device in a small size so that it occupies a small space and also reduce the costs by furnishing a plurality of circuit opening/closing means which are each equipped with input terminals where a high voltage power supply is connected and output terminals where a load circuitry is to be connected. CONSTITUTION: Each of a plurality of circuit opening/closing means is equipped with input terminals 3a, 4a, where a commercial primary high-voltage power supply 1 of AC 6600V as a high voltage power supply and a primary high- voltage power supply 2 as a generator used for oneself are connected, and output terminals 3b, 4b where a common load circuitry 5 at a factory etc., is connected. The arrangement further includes a plurality of vacuum breakers 3, 4 as circuit opening/closing means capable of making and breaking between the terminals, an interlock circuit 6 as a means to feed current to either of the vacuum breakers 3 and 4, and a cubicle 7 which accommodates the breakers 3, 4 and circuit 6. The device can be embodied small and at a low cost by installing these circuit opening/closing means and interlock means in one cubicle 7, and it is possible to suppress the installation space at a factory and the like. |
