1、 Performance characteristics:

1. High precision measurement of electrical parameters such as three-phase voltage, three-phase current, active power, reactive power, apparent power, power factor, frequency, etc

2. Positive and negative active/reactive energy measurement, time-sharing energy measurement

3. Measure the total harmonic distortion (THD) of three-phase voltage and three-phase current, as well as the harmonic components of the 2nd to 31st order

4. Voltage, current imbalance, positive/negative/zero sequence current, positive/negative/zero sequence voltage, voltage crest factor, current percentage content

5. Real time waveform display and event recording function

6. Large screen, high-definition graphic dot matrix LCD display

7. Supports 2-channel RS-485 communication and Modbus RTU protocol

8. Support switch input, switch output, analog transmission output, and power pulse output

9. Wide range AC/DC universal power supply: AC/DC 80V～270V

2、 Technical indicators:

1. Measurement accuracy:

Voltage: Level 0.5 Current: Level 0.5

Active power: Level 0.5 Reactive power: Level 0.5

Frequency: ± 0.02Hz Clock: ＜ 0.5S/d

Active energy: 0.5S level Reactive energy: 1 level

Voltage harmonic: Level 1 Current harmonic: Level 1

2. Signal input:

Wiring method: three-phase four wire, three-phase three wire

Rated voltage: AC 57.7V, AC 100V, AC 220V, AC 380V Rated current: AC 1A、AC 5A

Overload: Voltage: 1.2 times (continuous), 2 times/1 second (instantaneous)

Current: 1.2 times (continuous), 10 times/5 seconds (instantaneous)

Power consumption: Voltage:< 1VA/phase, current:< 0.4VA/phase

Impedance: Voltage:> 300k Ω, current:< 20mΩ

Frequency: 45-65Hz

3. Auxiliary power supply:

Scope of work: AC/DC 80V~270V Power consumption: ＜ 4VA

4. Functional modules:

Communication interface: Supports 2-channel RS-485 communication, Modbus RTU protocol baud rate: 2400-19200bps, default 9600bps

Switch input: Supports 8 channels of dry node input

Switching output: supports 4 relay outputs, capacity: AC 250V/5A，DC 30V/5A

Transmission output: Supports 4-channel analog output: 0/4-20mA or 0-5/10V

Power pulse output: supports 2-channel power pulse output, constant: 5000 or 20000 imp/kWh (kvarh)

5. Environmental conditions:

Working temperature: -10 ℃~+55 ℃ Environmental temperature:- 25℃～+70℃

Relative humidity: ≤ 93%, non corrosive gas location altitude: ≤ 2500m

6. Safety:

Insulation resistance:> 100M Ω AC withstand voltage: AC 2kV

7. Electromagnetic compatibility performance:

Electrostatic discharge: Level 4 rapid transient pulse train: Level 4 surge (impact): Level 4

8. External dimensions:

Frame size (mm) 120 × 120; 96×96

Hole size (mm) 111 × 111; 91×91