| 摘要 |
PURPOSE:To enable even a general consumer to utilize a pulse converter for a watt-hour meter by providing a calculating circuit which performs prescribed calculation by receiving a pulse input, a digital display part, and a time measuring circuit which decides on whether calculating time is short or long. CONSTITUTION:Output currents and output voltagew of the 1st and the 2nd generators 3 and 7 are detected by current transformers 4 and 8, and a voltage transformer 11 for instruments and supplied to watt-hour meters 5 and 9 with pulse transmitters respectively. Pulse outputs of those watt-hour meters 5 and 9 are supplied to a pulse converting device 14, and an calculating circuit 18 calculates the total power of the 1st and the 2nd generators and outputs it from a terminal 17. A digital power display part 19, on the other hand, displays the power of the 1st generator, the power of the 2nd generator, and the total value of the both selectively with an input point changeover switch 20, and a time measuring circuit 21 and a time changeover switch 22 regulate the calculating time of the calculating circuit 18. |
