| 摘要 |
PROBLEM TO BE SOLVED: To flexibly cope with an increase/decrease of a branch breaker and to obtain highly accurate power consumption information.SOLUTION: A power measurement device includes: a plurality of input terminals 21 for inputting current information of each branch electric path; an electric path connection section 31 for obtaining electric path voltage information; a power measurement IC 26 for calculating power consumption of each branch electric path and a memory 27 for storing the calculated power information. The power measurement device is formed to be separated into a first unit 2 with the input terminal 21 and a second unit 3 with the electric path connection section 31. The first unit 2 includes a terminal 22b for transmission connected to the second unit 3 and a relay terminal 22a for connecting the first unit 2 to be additionally installed. The second unit 3 includes a Micro Controller Unit (MCU) 33 for obtaining power information from the directly connected first unit 2 and the additionally installed first unit 2. |
