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 |
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 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 |
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 Input
(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 | 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 |
