| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a voltage compensator for compensating voltage variation of a load 3 by superposing a compensation voltage outputted from a compensation circuit 2 on a power supply voltage in which unnecessary voltage compensation operation is stopped by quickly detecting turn-off of a breaker provided in the upstream. <P>SOLUTION: A voltage detecting section 5 for detecting a power supply voltage has a means for detecting the phase of the power supply voltage. When the phase of the power supply voltage varies more than a predetermined amount from a reference phase during compensation operation, a decision is made that a breaker in the upstream is turned off and compensation operation is ended. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
