To provide an electrical energy measuring system which eliminates processes requiring expert knowledge and works by special qualified persons, such as, electrical engineers during installation.
The electrical energy measuring system 10 includes a current-measuring apparatus 20 and a voltage-measuring apparatus 30. The current-measuring apparatus 20 measures the effective value of current passing through a service wire 3, connected to a distribution switch board 2 and wirelessly transmits the measured effective value of current. The voltage-measuring apparatus 30 measures the effective value of voltage supplied from the distribution switch board 2 via service wires 3, 4, receives the effective value of current transmitted from the current-measuring apparatus 20, calculates the electric power value, on the basis of the measured effective value of voltage and the received effective value of the current, and calculates the electrical energy by multiplying the calculated electric power value by time which is a predetermined measurement period.
YAMAZAKI MIKIO
YAMAMOTO MASAKI
ENDO KUNI
KIZUGAWA NAOKI
NIPPON TELEGRAPH & TELEPHONE
| JPH11237414A | 1999-08-31 | |||
| JPH1164401A | 1999-03-05 | |||
| JPH06300790A | 1994-10-28 | |||
| JP2000193696A | 2000-07-14 | |||
| JP2001281274A | 2001-10-10 | |||
| JP2003098199A | 2003-04-03 |