1、 Single phase digital voltmeter function:

A single-phase digital voltmeter can directly measure single-phase voltage parameters in the power grid, with a measurement range of AC220V, AC400V, AC100V (expandable range through PT). It uses digital LED digital tubes to display parameters. The single-phase digital voltmeter has the advantages of high accuracy, strong isolation, stable electromagnetic compatibility, anti vibration, and high cost-effectiveness. The single-phase digital voltmeter can set PT and CT changes and can be used in energy management systems, substation automation, distribution network automation, residential power monitoring, industrial automation, intelligent buildings, intelligent distribution panels and switchgear. It can directly replace the original pointer type single-phase voltmeter.

1. Single phase digital voltmeter:Equipped with high-performance processing chips and independent measurement chips, it has high measurement accuracy and fast operating speed.
2. Single phase digital voltmeter:The display magnification, communication address, baud rate, etc. can be set through the buttons on the panel, making it very flexible and convenient to use.
3. Single phase digital voltmeter:Measure single-phase voltage parameters, CT can be set arbitrarily.
4. Single phase digital voltmeter: adopting LED digital display, digital zero calibration, digital calibration, high accuracy, and extremely high cost-effectiveness.
5. Single phase digital voltmeter:Input voltage AC220V, AC400V, AC100V (range can be expanded through PT)
6. Single phase voltmeter output: 0-20mA or 4-20mA analog output. Alarm output, monitoring the upper and lower limits of the measured parameters.

Shanghai Yadu single-phase digital voltmeter

IISingle phase digital voltmeterTECHNICAL INDEX

Single phase digital voltmeter accuracy: display accuracy of 0.5 level
Display: Using digital LED digital tube to display parameters

Single phase digital voltmeter voltage input:
Rated values: AC220V, AC400V/AC100V (range can be expanded through PT)
Overload: continuous 1.2 times instantaneous: voltage 2 times (10 seconds)
Power consumption:<1VA (per phase)
Impedance:>300k Ω

Single phase digital voltmeter power supply:
Working power supply: AC220V, AC/DC80-265V, AC380V, DC24V, DC48V power supply. Please specify when ordering
Power consumption: ≤ 5VA

Single phase digital voltmeter output module:
Pulse output: 2-channel power pulse output, optocoupler relay, constant: 5000imp/Kwh (Kvarh)
Switching input: 2-channel or 4-channel switching input
Switching output: 2-channel or 4-channel switching output
Analog output: 1-4 channels
Communication interface: RS485 interface MODBUS-RTU protocol, baud rates of 1200, 2400, 4800, 9600 optional

Single phase digital voltmeter isolation withstand voltage: input and power>2kV, input and output>1kV, power box output>2kV
Insulation resistance: ≥ 100M Ω
Working conditions: Environmental temperature: -10~55 ℃, relative humidity ≤ 93%, no corrosive gas field, altitude ≤ 2500m

3、 Single phase digital voltmeter selection table:

　IIISingle phase digital voltmeterWiring example diagram