(1) Metering function: It has the functions of forward and reverse active electrical energy and four-quadrant reactive electrical energy measurement. It also includes two functions of cumulative measurement and real-time measurement.

(2) Rate and period function: Using economic leverage, the peak and valley electricity prices of electricity use are different. At least four rates can be set: sharp, peak, flat, and valley, to improve the quality of electricity and economic benefits.

(3) Maximum demand measurement:

(4) Measurement function: It can measure the active parameters, reactive power, power factor, split-phase voltage, split-phase (including neutral) current, frequency and other operating parameters of each split-phase.

(5) Data display function: There are two ways for the intelligent energy meter to display the electricity data: cycle display and fixed display. The display content can be set by programming and has the function of wake-up display after power failure.

(6) Communication function: The physical layer of the communication channel must be independent, and the damage of any one communication channel must not affect the normal operation of other channels; when an important event occurs, it should support active reporting.

In addition, the smart energy meter also has a variety of functions such as event recording function, power failure meter reading function, safety protection function, clock function, freeze function, reset function, alarm function auxiliary power supply function and so on.

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