Technical Parameter
1. Single phase AC input
Voltage range: 100V, 220V, 380V, etc.
Current range: 5A, 50a, etc; The model of external opening current transformer is optional.
Signal processing: special metering chip is adopted, and 24 bit AD is adopted.
Overload capacity: 1.2 times the range is sustainable; The instantaneous (<20ms) current is 5 times, the voltage is 1.2 times, and the range is not damaged.
Input impedance: voltage channel >1k Ω /v.
2. Communication interface
Interface type: 1-way RS-485 communication interface.
Communication protocol: MODBUS-RTU protocol.
Data format: software can set "n, 8,1", "E, 8,1", "O, 8,1", "n, 8,2".
Communication rate: the baud rate of RS-485 communication interface can be set to 9600, 19200, 38400bps; The baud rate defaults to 9600bps.
3. Test output data
Voltage, current, power, electric energy and other electrical parameters.
4. Measurement accuracy
Voltage, current and power: ± 1.0%; Active kwh is level 1.
5. Electrical isolation
RS-485 interface is isolated from AC power supply, voltage input and current input; Isolation withstand voltage 2000vac.
6. Power supply
Power supply mode: the voltage range is ac85~265
Typical power consumption: ≤ 1W.
7. Working environment
Working temperature: -20~+70 ℃; Storage temperature: -40~+85 ℃.
Relative humidity: 5~95%, no condensation (at 40 ℃).
Altitude: 0~3000 meters.
Environment: a place without explosion, corrosive gas and conductive dust, and without significant shaking, vibration and impact.
8. Temperature drift: ≤100ppm/℃.
9. Product size: 90mm*40mm.
