| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a watthour meter which eliminates the need for a new space and construction for installing a power supply filter part separately by incorporating a filter part for removing noise from a power supply in a watthour meter part. <P>SOLUTION: The watthour meter including the watthour meter part including an electric power measurement part which measures electric energy consumed by a load connected to a power line and a power supply part which supplies electric power to the electric power measurement part; a power line communication part which communicates using the power line as a transmission line; a separation blocking filter part which separates a signal of power line communication into a power supply side and the load side; and a filter part which is built in the watthour meter part, and removes noises of the power supply part, thereby eliminating the need for the new space for installing the power supply filter part separately. <P>COPYRIGHT: (C)2012,JPO&INPIT |
