Willfar Information Technology Co. Ltd.
Stock Code: 688100.SH The Pioneer in Smart Utility Service and IoT Solutions
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Energy Efficieny Management Device Single-phase Distribution Monitoring DDS3102-3N
Company Profile
Willfar Information Technology Co., Ltd.
- Established in 2004;
- Listed on the STAR Market of the Shanghai Stock Exchange in December 2019;
- Leading supplier of meter reading (AMI) equipment and operation service;
- The first company to develop "One DCU Reading Multi-meter" solution in China;
- The first company to have large-scale application of technologies and systems like "CPU smart-card Charge and Control", "One DCU Reading Multi-meter", LoRa-based RF Communication and "District Metering Area (DMA)”
Technical Parameter
| Item | Parameter | |
| Wiring Mode | Three Phase 3 wires, Three Phase 4 wires, Single Phase | |
| Voltage | Reference Voltage: |
| Range:10V~700V | ||
| Power Consumption:< 0.05VA(Single Phase) | ||
| Accuracy: RMS 0.2 % | ||
| Resolution:0.01V | ||
| Current | Nominal Voltage: 0.3A,1A,1.5A,5A | |
| Range: 0.001In ~ 10A | ||
| Power Consumption: < 0.05VA(single line nominal current) | ||
| Accuracy: RMS 0.2 % | ||
| Resolution: 0.001A | ||
| Power (active/reactive/apparent) | Accuracy: 0.5%或0.2% | |
| Resolution: 0.001kW/kVar/kVA | ||
| Line Frequency | Range: 45 Hz~65 Hz | |
| Accuracy: 0.2% | ||
| Resolution: 0.01 Hz | ||
| Harmonic Wave | Time: 2~50times | |
| Accuracy: Class A | ||
| Resolution: 0.01 % | ||
| Metering | Active Electric Energy | Level of Accuracy: 0.5S或0.2S |
| Resolution: 0.01 kWh | ||
| Reactive Electric Energy | Level of Accuracy: Class II | |
| Resolution: 0.01 kvarh | ||
| Power Pulse Output | 2-line electric energy (active/reactive) Pulse Output |
| Opto-isolator,4000VRMS | ||
| Switch Output (Optional) | 2-line electromagnetic relay output | |
| Normally Open Type | ||
| Contact Rating: AC 250V /3A；DC 30V /3A | ||
| Switch Input (Optional) | 4-line dry contact input | |
| Opto-isolator,4000VRMS | ||
Analog Signal | | 4-line transducing output |
| Current Output Type (4~20mA/0~20mA/0~24mA) | ||
| Voltage Output Type (0~5V/0~10V) | ||
| Accuracy: 0.5% | ||
| Communication | RS-485 Communication Interface (Optional) | Interface: 2-wire half duplex |
| Communication Rate: 600bps~38400bps | ||
| Protocol: Modbus-RTU, DL/T645 | ||
| Environment | Working Temperature | -25℃~+60℃ |
| Limit Working Temperature | -35℃~+70℃ | |
| Relative Humidity | ≤ 95% (non-condensing) | |
| Other | Power Supply | AC or DC |
| Maximum Input Range: 40V~420V | ||
| Power Consumption: ≤1W,2VA | ||
| Dimension | Boundary Dimension (mm):96×96×95 | |
| Hole size (mm):92×92 | ||
| Weight | around 450g | |
Features
- High precision: measure / measure the whole power parameters, the accuracy of active power is 0.5s, the accuracy of reactive power is 2.
- Wide voltage: AC/DC adaptive operation, 40~420V AC/DC input range.
- Multi-communication: 1-way 485 communication interface, supporting MODBUS-RTU and DL/T645-2007 protocols.
- Multi-interface: 2 switch inputs, 1 relay output, 4 analog transmission output optional.
- High performance: dustproof and waterproof, nationally standardized double insulation, level 4 EMC anti-disturbance test, Class B level RF electromagnetic field interference.
Certificate
CPA/CMC/CE
Situation
Suitable for transformer and distribution automation systems, industrial control and industrial automation systems, energy management systems and community power monitoring and other occasions