| 摘要 |
PURPOSE:To calculate mean electric energy at every inputting of a pulse having unit electric energy with high accuracy, by storing the input of the pulse of unit power from a watthour meter together with the time information thereof for a prescribed time and calculating mean power. CONSTITUTION:The pulse of unit power and the time information thereof from a clock part 4 are stored for a prescribed time, that is, a pulse integration time DELTAT in a storage device 3 at every inputting of the pulse of unit power from a watthour meter 1 to an input device 2. The counting of the number of pulses, the integration of the count value and the unit power and further the division by the time DELTAT are accomplished in an arithmetic circuit 5 in accordance with said storage, and mean electric energy is calculated. Thereafter, the mean electric energy is calculated similarly at every inputting of the pulse of the unit electric energy. Even the time DELTAT is set long, the mean power is calculated at every pulse of the unit electric energy and the mean electric energy is measured with high accuracy. |
