| 摘要 |
<p>The present specification relates to a three-phase connection detection apparatus and an in-phase detection method and, more particularly, to a three-phase connection detection apparatus and an in-phase detection method which can check accurate in-phase between a three-phase voltage and a three-phase current, by checking accurate in-phase by judging in-phase of the three-phase voltage and the three-phase current, by comparing power factor relationship between the three-phase voltage and the three-phase current, and can realize the function of a reverse phase detector and an in-phase checker together, and can detect the three-phase voltage and the three-phase current accurately.</p> |
