1. From the measurement principle, it can be divided into: induction electric energy meter (mechanical meter), electromechanical integrated electric energy meter, and electronic electric energy meter.
2. From the model, it can be divided into: DD28 (single-phase), DT862 (three-phase four-wire), DS862 (three-phase three-wire), DX 862 (three-phase reactive power) DSSD (three-phase three-wire electronic multifunction) Three-phase four-wire electronic multifunction) where the first letter D stands for electric energy meter; the second letter D stands for single active power, X stands for three-phase reactive power, S stands for three-phase three-wire active power, and T stands for three-phase four-wire active power; The third letter S stands for fully electronic; the fourth letter D stands for multi-function; the number behind is the serial number. At present, the electric energy meters that our company has used in classified metering projects belong to all-electronic multi-function electric energy meters; their models are DTSD719, 720, and DTSD341.
3. In terms of specifications, it can be divided into: Three-phase three-wire system: Reference voltage 3×100V
Three-phase four-wire system: reference voltage 3×57.7V/100V, 3×220V/380V
Single-phase system: reference voltage 220 V
4. From the wiring method, it can be divided into: through the transformer access type and direct access type;
The current specifications connected through the current transformer: 3×0.3(1.2)A 3×0.5(2)A 3×1.5(6)A 3×5(10)A, etc.
The current specifications for direct access are: 3×5(20)A 3×10(40) A 3×20(80)A, etc. At present, most of the current specifications of electric energy meters are designed to be wide load, such as 3×5 (20) A, where 5 represents the rated current and (20) represents the maximum rated current. The maximum rated current is 4 times the rated current.
5. From the measurement accuracy, it can be divided into: active power 0.2S class 0.5S class 0.5 class 1.0 class 2.0 reactive power 0.5 class 1.0 class 2.0
6. From the purpose of use, it can be divided into: single-phase electric energy meter, three-phase active electric energy meter, three-phase reactive electric energy meter, maximum demand meter, multi-rate electric energy meter (time-sharing), multi-function electric energy meter, and voltage loss timer Meter, copper loss meter, iron loss meter, prepaid electric energy meter, etc.