
This meter was equipped with numeric keyboard interface used to active energy metering and prepayment control. Besides, this meter also has infrared communication, RS485, metering components, real-time-clock device, load controlling switch and other auxiliary equipment.

Rated frequency | 50 Hz |
Nominal current | 10 (100) A |
Rated voltage | 3*230/400 V |
Accuracy level | Active energy: 1 class Reactive class: 2 class |
Working principle: | The voltage and current of the meter, to start with, will respectively collect the sampling by the sampling circuit when it is operating, afterwards, the electric energy processing propriety use integrated circuit will process the multiply operation and send the results to CPU for tackling, ultimately. |
And CPU will issue the processed data on the basis of requirements to output devices such as display section, communication section and so on. | |
Energy meter equipped with digital keyboard can make human-computer interaction through keyboard input information into meter. |


