| 摘要 |
PROBLEM TO BE SOLVED: To provide a distribution board capable of improving conditions of PLC communication between a smart meter and a distribution board by modifying installation mechanism of a PLC communication adapter.SOLUTION: The distribution board includes a communication unit which performs communication with an external watthour meter having a communication function. The communication apparatus includes: a first terminal connected to a commercial power line; a second terminal connected to the load side; a conductive path that connects the first terminal and the second terminal thereacross; and a communication section including a modem circuit being insulated from the conductive path, which converts a power line transmission signal into a digital signal via the modem circuit and overlaps a digital signal from the external with the power line transmission signal via the modem circuit. |
