1、 LCD single-phase voltmeter function:

LCD single-phase 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 display 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 LCD single-phase 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. LCD single-phase voltmeter:Equipped with high-performance processing chips and independent measurement chips, it has high measurement accuracy and fast operating speed.
2. :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. LCD single-phase voltmeter:Measure single-phase voltage parameters, CT can be set arbitrarily.
4. Adopting LED digital display, digital zero and digital calibration, high precision, and extremely high cost-effectiveness.
5. LCD single-phase voltmeter:Input voltage AC220V, AC400V, AC100V (range can be expanded through PT)
6. 0-20mA or 4-20mA analog output. Alarm output, monitoring the upper and lower limits of the measured parameters.

Shanghai YaduLCD single-phase voltmeter 　　

IILCD single-phase voltmeterTECHNICAL INDEX

LCD single-phase voltmeter accuracy: display accuracy level 0.5
Display: Using digital LED digital tube to display parameters

LCD single-phase 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

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

LCD single-phase 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

LCD single-phase 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

IIILCD single-phase voltmeterSelection table:

　IIIExample diagram of wiring for LCD single-phase voltmeter