| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic watt-hour meter not affected by a magnetic field from an external magnet even if the external magnet is placed in proximity to the electronic watt-hour meter. <P>SOLUTION: An embodiment includes a current transformer 104 operatively coupled to an electronic watt-hour meter 102; a first shield 110 on a first side of the current transformer 104; and a second shield 120 on a second side of the current transformer. The second side is substantially parallel to the first side. The first shield 110 and the second shield 120 each include a substantially magnetically permeable and conductive metal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
