Singe-phase, multi-user active watt-hour meter for power administration network

The utility model relates to an ammeter for measuring quantity of electricity consumption, in particular to a single-phase multi-user active electric energy meter used in electric energy managerial grids applying network management. The multi-user metering circuit of the utility model amplifies and converts sampling signals to voltage signals by a live wire (DWIV) through a current sampling resistance switch-in end (IV01-16), communicates with the sampling voltage signals in turn under the control of a single chip microcontroller signal (ZGO-7), divides voltage with switched-in zero line voltage (DWLIO) and multiplies with adjusted phase signals, then is switched- in with a voltage-controlled oscillator to create impulse signals, and is switched-in with a single chip microcontroller circuit (DF01) to count through a terminal (PBI). A display circuit (DFB02) is provided with an LED digital tube and an LED diode, wherein the LED digital tube displays a subscriber number, date, and energy consumption data, and the LED diode indexes categories of the energy consumption data in colorful translucent mode. All series ammeter types of the utility model apply the circuit scheme of a specially designed micropower integral type multiplier with low cost combined with the micropower single chip microprocessor, thereby have high reliability.