1、 Function of single-phase current voltage frequency meter:

Single phase current voltage frequency meterYK4UIFSeries, mainly measuring power parameters such as single-phase current, single-phase voltage, single-phase frequency, etc. CT and PT can be set arbitrarily. Adopting LED digital display, rated current: AC5A AC1A, rated voltage: AC220V. Equipped with high-performance processing chips and independent measurement chips, it has high measurement accuracy and fast operating speed. Single phase current voltage frequency meterIt is designed for the power monitoring needs of power systems, industrial and mining enterprises, public facilities, and intelligent buildings. It can measure current, voltage, power factor, and electrical parameters, with switch input and output, power pulse output, and RS485 communication interface. It can achieve remote data transmission and can be equipped with analog output and other functions. Single phase current voltage frequency meterWidely used in energy management systems, substation automation, distribution network automation, residential power monitoring, industrial automation, intelligent buildings, intelligent distribution panels and switchgear.

1. 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.
2. Single phase current voltage frequency meterOptional analog output, 0~20mA or 4~20mA optional.
3. Optional alarm output for monitoring the upper and lower limits of the measured parameters.
4. Optional RS-485 digital interface, using standard MODBUS-RTU protocol.
5. Optional switch input, capable of monitoring the switch status within the system.

6. Digital zeroing and tuning, high precision, extremely cost-effective
7. Measure single-phase current, voltage, and power factors, CT and PT can be set arbitrarily.
8. Single phase current voltage frequency meterAdopting LED digital display.
9. Single phase current voltage frequency meterRated current: AC5A AC1A.
10. Single phase current voltage frequency meter额定电压： AC220V。

Shanghai YaduSingle phase current voltage frequency meter 　　

IISingle phase current voltage frequency metertechnical indicators

Single phase current voltage frequency meterAccuracy: Display accuracy level 0.5
Single phase current voltage frequency meterDisplay: The display screen is a full four digit LED digital tube display

Single phase current voltage frequency meterInput:
Standard input current: AC1A, AC5A (can be set by expanding the range through CT, please specify when ordering)
Current impedance:<20M Ω
Current overload: continuous overload: 1.2 times instantaneous overload: current 10 times (5 seconds)
Frequency: 50, 60HZ ± 10%

Single phase current voltage frequency meterPower Supply:
Working power supply: AC220V, AC/DC80-265V, AC380V, DC24V, DC48V power supply. Please specify when ordering
Power consumption: ≤ 5VA

Single phase current voltage frequency meterOutput module:
Pulse output: 2-channel power pulse output, optocoupler relay, constant: 5000imp/Kwh (Kvarh)
Switching output: 2 or 4 switching inputs
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 current voltage frequency meterIsolation withstand voltage: Input and power>2kV, input and output>1kV, power box output>2kV
Insulation resistance: ≥ 100M Ω
Single phase current voltage frequency meterWorking conditions: Environmental temperature: -10~55 ℃, relative humidity ≤ 93%, no corrosive gas field, altitude ≤ 2500m

IIISingle phase current voltage frequency meterSelection diagram:

　IIISingle phase current voltage frequency meterWiring example diagram

4Single phase current voltage frequency meterWiring precautions:
Input signal:
The calculation method of collecting data separately for each measurement channel ensures complete consistency and symmetry during use, and it has multiple wiring methods. Suitable for different load forms.
A、 Voltage input: The input voltage should not exceed the rated input voltage of the product (100V or 400V), otherwise PT should be considered, and a 1A fuse must be installed at the voltage input end.
B、 Current input: The standard rated input current is 5A. If it is greater than 5A, an external CT should be used. If other instruments are connected to the CT used, the wiring should be connected in series. Be careful not to reverse the incoming and outgoing lines. Before removing the current input connection of the product, be sure to disconnect the CT primary circuit or short-circuit the secondary circuit.

5Single phase current voltage frequency meterAuxiliary power supply:
This product has an AC220V power input interface. Please ensure that the provided power supply is suitable for this series of products to prevent damage to the product. When supplying power, Jianyi installs a 1A fuse on the live side. When the power quality is poor, it is recommended to install surge suppressors or power filters in the power circuit to prevent lightning strikes.

Six:Single phase current voltage frequency meterfunctional module
1. Switching input/output
　　Single phase current voltage frequency meterThe instrument can provide up to 4 switch inputs and 3 switch outputs; The switch input is used to detect the switch status of external passive switches. The instrument is equipped with a working power supply inside and does not require external power supply. It can be used to monitor information such as fault alarm nodes and the opening and closing switch status of circuit breakers; When the switch is closed, the corresponding position on the instrument panel switch display page is represented by "1", and when the switch is disconnected, the corresponding position on the instrument panel switch display page is represented by "0". The status information can be remotely transmitted through the RS485 communication interface

There are two modes to choose from for the switch output: the alarm output mode for the upper and lower limits of the battery. When the measured electrical parameter is below or exceeds the set threshold value, the corresponding output node is turned on. The communication remote control output method (turning off the alarm is the remote control method), the upper computer or background monitoring system directly controls the opening and closing of the output contacts through the 485 communication interface. The switch output interface is a passive normally open contact of the relay, with a contact capacity of AC3A/250V DC3A/30V.

Seven:Single phase current voltage frequency meterAnalog transmission output
Analog transmission output is the conversion of measured electrical information into direct current or direct voltage output in a linear proportion. It can be used to remotely transmit data to backend terminal PLC and other devices for remote monitoring. The instrument can provide up to 4 analog output functions, and each channel can be selected to display any one of the items for setting, which can be set as 0-20mA or 4-20mA output.

Current output: 0-20mA or 4-20mA
Accuracy level: 0.5 level
Overload: 120% effective output, maximum output current 24mA
Load: ＜ 500 Ω. When there is no connection, the voltage at both ends of the terminal is about 12V