Willfar Information Technology Co. Ltd.
Stock Code: 688100.SH The Pioneer in Smart Utility Service and IoT Solutions
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Single-phase Energy Efficiency Management Monitor Device DDS3102-P2
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 Parameters
| Item | Parameters | |
| Wiring Mode | Three Phase 3 wires, Three Phase 4 wires, Single Phase | |
Measurement |
Voltage | Reference Voltage: Un:AC380V,AC220V,AC100V,AC57.7V |
| Range: 10V~700V | ||
| Power Consumption: < 0.05VA(Single Phase) | ||
| Accuracy: RMS 0.2 % | ||
| Resolution: 0.01V | ||
| Current | Nominal Current In: 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: 2~50 times | |
| Accuracy: Class A | ||
| Resolution: 0.01 % | ||
| Metering | Active Electrical Energy | Level of Accuracy: 0.5S/0.2S |
| Resolution: 0.01 kWh | ||
| Reactive Electrical Energy | Level of Accuracy: Class II | |
| Resolution: 0.01 kvarh | ||
| Digital Signal | 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 Intput (Optional) |
4-line dry contact input | |
| Opto-isolator,4000VRMS | ||
| Analog Signal | Transducing (analog) Output (Optional) |
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 | Power Supply |
| Maximum Input Range: 40V~420V | ||
| Power Consumption: ≤1W,2VA | ||
| Dimension | Boundary Dimension (mm):96×96×95 | |
| Hole size (mm):92×92 | ||
| Weight | around 450g | |
Feature
- High precision: comprehensively measure power parameters, active power accuracy is level 0.5s or level 1, reactive power accuracy is level 2.
- High intelligence: double rate electric energy, monitor peak or valley point rate electric energy.
- Easy reading: large screen, high brightness liquid crystal display.
- Easy installation: 35mm standardized rail type installation. Sample voltage power supply, no need for a separate auxiliary power supply.
- Multi-communication: 1-way 485 communication interface, 1-way far-IR communication, supporting MODBUS-RTU and DL/T645-2007 protocols.
- 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 electrical transforming and distribution automatic systems, industrial control and industrial automation systems, energy management systems and community power monitoring occasions etc.