| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide surge low-reflection equipment wherein an impedance matching portion is connected to a line between a feeder cable and the equipment so that a suppression effect of a surge voltage is sufficiently obtained without causing high cost, and the equipment is constituted so that its effect may be confirmed. <P>SOLUTION: The surge low-reflection equipment includes an AC motor 2 in which each end of the feeder cable 4 for electric power is connected to external terminals 6u, 6v, 6w, the impedance matching portion 3, and an indication circuit 10, wherein the impedance matching portion is connected to the external terminals 6u, 6v, 6w of the AC motor 2, and impedance matching between the AC motor 2 and the feeder cable 4 is performed by providing an impedance matching circuit 9, and the indication circuit 10 is provided at the impedance matching portion 3, and indicates when the surge voltage of a predetermined voltage or more is applied to the AC motor 2. <P>COPYRIGHT: (C)2007,JPO&INPIT |
