Home field installation cases

The first generation of quartz clock controlled time-sharing watt hour meter was mainly produced in the early stage. This kind of electric energy meter drives the electromagnetic counter of peak and valley respectively by connecting wires with quartz clock at different time periods, and displays the peak and valley electric quantity and the total electric quantity respectively. Deducting the peak and valley electric quantity according to the total electric quantity is the electricity quantity in the normal period. Due to the poor reliability of the time-sharing billing watt hour meter. The accuracy of time division is too low (the minimum segmentation is 5min), and it is easy to be interfered. The adjustment of time period is also troublesome. The function is single, and it can not meet some special requirements in time-sharing billing. At present, it has been basically eliminated.
The second generation of time-sharing watt hour meter with Mechatronics structure. This kind of electric energy meter is based on the 1.0 induction system. It uses infrared photoelectric converter, pulse output and CPU, single chip microcomputer circuit. It uses the attached keyboard programming or infrared wireless keyboard to set various requirements, clock, time period and weekend. It can protect the maximum demand of this month, the maximum demand of last month and the peak, flat and valley of this month Maximum demand display and storage. With pulse output and RS-232 serial communication port, it is convenient for data remote transmission and monitoring. The performance of the instrument is relatively precise and reliable, the function can meet the demand of time-sharing billing in China at present. The production process is relatively mature and the price is competitive. It is the most widely used generation of products in China. However, the disadvantage is that each manufacturer develops its own special MCU, which has the disadvantages of poor product compatibility and difficult maintenance. The common products in this series include df68, df93, dtf33, DF86, dsf20, dif2, DF32, dtf864, MRZ, dsd66, etc.