| 摘要 |
PROBLEM TO BE SOLVED: To provide a different-phase coupler capable of being installed in an existing distribution panel even when a branching breaker has little installation space.SOLUTION: A different-phase coupler 1 includes: a communication relay section; and a connection section. The communication relay section relays among the apparatuses so that the apparatuses, which are connected across different-phases commercial power supply of a single-phase three wires, performs power line carrier communication. The connection section includes plural contacts which electrically connect an electric circuit to the communication relay section to which plural apparatuses performing the power line carrier communication are connected. The plural contacts are connected to plural electric circuits between the main breaker 3 and the branching breaker 4 in a one-to-one manner so that the communication relay section is disposed between the main breaker 3 and the branching breaker 4 in the distribution panel 2. |
