| 摘要 |
PURPOSE:To obtain an electronic watthour meter which can adjust errors automatically. CONSTITUTION:When the output signal from a power generation source 2 is fed to a meter to be adjusted (an electronic watthour meter). it is converted to a frequency signal which is larger than a frequency corresponding to the power by a W/F converter 6. On the other hand, a compensation value operation part 11 calculates the difference between the reference pulse signal from a master meter 3 and the frequency signal from the W/F converter 6 and then transmits it to a compensation part 7 via a compensation storage part 12. Then, the compensation part 7 compensates the frequency signal from the W/F converter 6 based on the signal and then output it to a frequency-dividing part 8. |
