Three phase three wire electronic energy meter

1Three phase electricity meterPurpose and Scope of Application
The DTS/DSS three-phase electronic active energy meter is a high-quality three-phase energy metering product launched by our company. Due to the use of advanced specialized large-scale integrated circuits and SMT manufacturing processes from abroad, its accuracy and stability are reliably guaranteed. This product complies with all technical requirements for three-phase energy meters in GB/T17215-2002 "Static AC Active Energy Meters for Class 1 and Class 2" standard, and is suitable for measuring three-phase AC active energy with a rated frequency of 50Hz and a rated voltage of 220V.
The working conditions are an ambient temperature of -40~+60 ℃ and a relative humidity of no more than 85%.
twoThree phase electricity meterFunction and characteristic
Three phase active energy metering, long-term operation is not smooth and calibration is required
Three phase power supply, one or two phases of power outage, measurement accuracy is not affected.
Wide working temperature range
Capable of remote control and power testing signal output
IIIThree phase electricity meterSpecifications and main technical parameters
3.1 Model
Three phase three wire: DSS
Three phase four wire: DTS
3.2 Basic voltage and current
Basic voltage: 3X100V; 3x220/380V
Basic current: 3X1.5 (6) A; 3X5（20）A; 3X10（40）A;
3x15（60）A; 3X20（80）A; 3x30（100）A
3.3 Accuracy level: Level 1, Level 2
3.4 Rated frequency: 50Hz
3.5 Power consumption: Voltage circuit ≤ 1W and 4VA
Current circuit 0.6 ≤ VA
3.6 Environmental conditions:
Standard operating temperature: -20~+45 ℃
Extreme working temperature: -40~+60 ℃
Relative humidity: Annual average: ≤ 75%
30 days, 95% of which are naturally distributed throughout the year
Sometimes reaching 85% at other times
3.7Three phase electricity meterWeight: Approximately 2Kg

4、 Working principle diagram
The principle diagram is shown in Figure 1. The three-phase voltage and current are measured and converted into corresponding signals by their respective sampling circuits, which are then output to the three-phase bidirectional energy metering chip. Its output is a frequency pulse signal proportional to the measured power, which is divided and drives the stepper motor meter and electric energy test pulse output to achieve three-phase electric energy measurement.