Jsykj Miniature Electricity Power Metering Module Micro Solar Photovoltaic Electric Energy Monitoring Current Meter

1.3 Technical parameters

1.3.1 Single phase AC input

1) Voltage range: 100V, 220V, 380V, etc. are optional;

2) Current range: 5A, 50A, 100A, etc. are optional; The model of external open current transformer is optional;

3) Signal processing: Using a dedicated measurement chip, 24 bit AD sampling;

4) Overload capacity: 1.2 times sustainable range; Instantaneous (<20mS) current 5 times, voltage 1.5 times, range not damaged;

5) Input impedance: voltage channel > 1 k Ω/V;


1.3.2 Communication interface

1) Interface type: 1-way TTL communication interface, compatible with 3.3V;

2) Communication protocol: MODBUS-RTU protocol;

3) Data format: can be set by software, such as "n, 8,1", "e, 8,1", "o, 8,1", "n, 8,2";

4) Communication rate: Baud can be set to 1200, 2400, 4800, 9600Bps; Baud is 9600bps by default;


1.3.3 Measurement output data

Multiple electrical parameters such as voltage, current, power, energy, power factor, frequency, etc. can be found in the Mdobus data register list;


1.3.4 Measurement accuracy

Voltage, current, and quantity of electricity: less than ± 1.0%; Active electricity level 1


1.3.5 Isolation

Isolation between the tested power supply and the power supply; Isolation and withstand voltage 3000VDC;


1.3.6 Power supply

1) DC single power supply 3.3V, power consumption 8-10mA.

1.3.7 Working environment