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Ningbo Qixuan Da Technology Co., Ltd
YFW-BS series power measurement and control transmitter
NegotiableUpdate on 05/26
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Overview
The YFW series power transmitter is an instrument developed by Ningbo Dongqi that can convert the measured AC current, voltage, and power signals into DC current or voltage output in linear proportion.
Product Details
Ningbo DongqiYFW-BSSeries of power measurement and controltransmitterSelection instructions
1purpose
YFWSeries power transmitterIt is a technology developed by Ningbo Dongqi that can measure the measured AC current and voltage、Electricity signalAn instrument that converts direct current or voltage into a linear proportional output. Equipped with corresponding indicator instruments or devices, it is possible to achieve current Measurement and control of voltage.Suitable for on-site monitoring and display of power grids and automation control systems, as well as remote control and telemetry of remote control devices for automated scheduling. Its function is to convert electrical parameters such as current, voltage, power, frequency, power factor, and electrical energy in the power grid intoCPUControl direct communication samplingA/DOutput standard current, voltage, or switch signals after analog-to-digital conversion, and communicate with remote data terminalsRTUto be connected. Instrument'sRS-232orRS-485In the interface, data exchange can be directly carried out with the control center to achieve automated management. In addition, this series of instruments also has intelligent functions for non electric measurement, transmission, and alarm input and output, such as pressure, temperature, and flow.
At present, this series of instruments has been widely used in industries such as water conservancy, environmental protection, power, metallurgy, and railways.
IIYFWSeries of power measurement and controltransmitterselection
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| YFW-BS A1 A2 A3 A4 A5 |
| serial number | Functional Description |
| A1 | Ningbo Dongqi Product Series Number 4I---alternating currenttransmitter 5I---DC current isolator 4U---AC voltage transmitter 5U---DC voltage isolator 4P----active powertransmitter 4Q---Reactive power transmitter 4H---Power factor transmitter 4F----frequencytransmitter |
| A2 | 1---Single phase output (omitted) 2----Dual phase output 3----Three phase output 4----three-phase four-wire
|
| A3 | C---RS485communication O2----switch output I2----Two way switch input I4----Four channel switch input |
| A4 |
|
| A5 |
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| Common models | YFW-BS4IYFW-BS4UYFW-BS4I3TYFW-BS4U3TYFW-BS4PYFW-BS4QYFW-BS4HYFW-BS4F |
for example：
1Model:YFW-BS4I input0-5AoutputDC4-20MAauxiliary power supplyAC220V
meansSingle phase AC current transmitter input0-5AoutputDC4-20MAauxiliary power supplyAC220V
2Model:YFW-BS5I2 inputDC4-20MAOutput dual channelDC4-20MAauxiliary power supplyAC220V
meansDual signal isolator inputDC4-20MAOutput dual channelDC4-20MAauxiliary power supplyAC220V
IIIYFWGeneral technical specifications for type electric quantity transmitters
Reference standards and rules:GB/T 13850-1998
Accuracy level:0.5%
Stability: Compliant withGB/T 13850-1998
Operating TemperatureGroup I10-35℃ Group II0-45℃ Group III-10-55℃
relative humidity≤95%
Response time:<400mL
Peak output ripple:<0.5%
Operating frequency: nominal frequency±10%
Output load: Constant current output rated10VMaximum pressure drop15VVoltage drop constant voltage output rated2mAmaximum5mAoutput
Output load impact:<0.1%(Within the rated load range)
Input load: current circuit<0.5VAvoltage loop<0.5VA
Auxiliary power supply: rated voltage80%-120%，
rated frequency90%-110%
Input overload range: current 2Double continuous20times1Maximum voltage per second2Double continuous
Insulation strength: compliant GB/T13850-1998
Impact test:ANLI C37.90a/1973,DIN IEC 255-4 (5kV 1.2/50uLpulse voltage)
Surge test:IEC 255-4（2.5kV-0.25mL/ 1MHz）
Calibration amplitude: minimum full-scale±3%Minimum zero point ±1%.
Magnetic field influence:0.4KV/mChanges in magnetic field strength<0.05%
Storage conditions: Temperature-40-70℃，
relative humidity20-99%No condensation
fourNingbo Dongqi Measurement and Controltransmitterperformance parameters
| performance | parameter | ||
| Input voltage measurement display | network | Three phase three wire, three phase four wire | |
| voltage | rated value | AC100VThe400V(Please specify when placing an order) | |
| overload | continued:1.2Instantaneous doubling:2times/10s | ||
| power consumption | <<1VA(Each phase) | ||
| impedance | 〉300kΩ | ||
| precision | RMSMeasurement, accuracy level0.5 | ||
| current | rated value | AC1AThe5A(Please specify when placing an order) | |
| overload | continued:1.2Instantaneous doubling:2times/10s | ||
| power consumption | <<0．4VA(Each phase) | ||
| impedance | <<20MΩ | ||
| precision | RMSMeasurement, accuracy level0.5 | ||
| frequency | 40~60Hz,precision0.1Hz | ||
| function | Active, reactive, apparent power, accuracy0.5level | ||
| electric energy | Four phase limit measurement, active power accuracy0.5Grade, reactive power accuracy1level | ||
| display | Programmable, switchable, and looping2、3、4rowLEDdisplay | ||
| power supply | scope of work | ACTheDC 80~270V | |
| power consumption | ≦5VA | ||
| output | Digital interface | RS-485TheMODBUS-RTUagreement | |
| pulse output | 2Circuit power pulse output, optocoupler isolation | ||
| environment | working environment | -10~55℃ | |
| storage environment | -20~75℃ | ||
| safety | pressure resistance | Input and power supply>2kV,Input and output>2kV,Power supply and output>1kV | |
| insulation | Input, output, and power supply to the chassis>5MΩ | ||
| appearance | size |
| |
| weight | 0．6kg | ||
4、 Installation and external opening dimensions of Ningbo Dongqi measurement and control instruments
5、 Ningbo Dongqi Measurement and Control Instrument Wiring Method
