| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an uninterruptible loop switcher which confirms that a power supply reliably exists in the other line at the time of making a switching from one line to the other line and executes the switching. <P>SOLUTION: There is provided an uninterruptible loop switcher configured to switch a power supply from one line as a main line to the other line as a preliminary line. In the uninterruptible loop switcher, current detectors 1, 5 configured to detect a direction of a current are connected to a power-supply side of the lines, and a second power-receiving interruptor 6 is provided. When a direction of a current detected by a current detector 5 of said another line is a forward direction from the power-supply side to a load side, the uninterruptible loop switcher opens the first power-receiving interruptor 2, and executes a power-supply switch from said one line to the other line. <P>COPYRIGHT: (C)2013,JPO&INPIT |
