Growatt DDSU666 Single Phase Meter
Overview
DDSU666 Single-phase electronic type guide rail mounting electric energy meter is designed for power monitoring and energy metering demand of the electric power system, communication industry, and construction industry.It is a new generation of intelligent instruments integrated into Communication and Measurement, mainly used as the measurement and display of voltage and current, power, frequency, power factor and active power in electrical circuits. It will realize the data network of external devices by RS485 communication. It uses a standard DIN35mm rail mounting structure, a modular design. It has the advantages of small size, easy installation, and easy networking. It is used widely as energy monitoring and assessment in industrial and mining enterprises, hotels, schools, and large public buildings.
Technical Parameters
| General Specifications | |
| Voltage | 230Vac |
| Specified operating voltage range | 0.9Un～1.1Un |
| Extended operating voltage range | 0.8Un～1.15Un |
| Base current(Ib) | 5A |
| Current range | 5～80A |
| Voltage line power consumption | ≤1W/8VA |
| Frequency | 50 Hz～60Hz |
| AC voltage withstand | 2KV /5mA for 1 minute |
| Impulse voltage withstand | 4KV-1.2/50uS wavform |
| Max. Reading | 999999. 99kWh |
| Accuracy | |
| Voltage | 1% of range maximum |
| Current | 1% of nominal |
| Frequency | 1% of mid-frequency |
| Power factor | 1% of Unity |
| Active power | 1% of range maximum |
| Reactive power | 2% of range maximum |
| Enviroment | |
| Rated temperature | -25℃～+55℃ |
| Limit temperature | -35℃～+70℃ |
| Relative humidity(average annual) | ≤75％ |
| Atmosphere | 86kPa～106kPa |
| Installation category | CAT III |
| Degree of pollution | Conform to RoHS |
| Communication | |
| Communication | RS485 output for Modbus RTU |
| Baud rate | 9600 |
| Mechanics | |
| Din rail dimensions | 36x98x65(WxHxD) |
| Mounting | DIN rail 35mm |
| Sealing | IP 51 (indoor) |
Unpacking
| Item | Number | Description |
| A | 1 | Single phase meter |
| B | 1 | RS485 cable（standard length 15m） |
| C | 1 | User Manual |
Dimension unit mm
Installation
Wire diagram:
The Ingress Protection rate is IP51, So the meter must be installed in the door. The whole installation chart shows below:
Before screwing the cable. Please open the cover of the meter:
The standard communication cable between the meter and inverter is 5m, if it is not enough, Customers can be extended through the network cable.
Note:
- Be careful with the wire of input and output of L/N and the range of input voltage or current, if the data is outranged, it may destroy the meter.
- Be careful with the input and output of the meter line, if the lines are wrong, the system will work in the wrong way.
Display
When the energy meter is in normal working condition (on load state), the positive pulse indicator should be flashed. If long time for no flashing or light for the indicator, please check whether the wiring mode of the energy meter is right or not.
| Symbol | Meaning |
| V | The unit of the voltage, the display data of indicating LCD is voltage |
| A | The unit of the current, the display data of indicating LCD is current |
| W | The unit of the active power, the display data of indicating LCD is active power |
| var | The unit of the reactive power, the display data of indicating LCD is reactive power |
| Hz | The unit of the frequency, the display data of indicating LCD is frequency |
| Symbol | Meaning |
| kWh | The unit of the active energy, the display data of indicating LCD is active energy |
| T | When communicating, T flashes |
The display time of the measurement data is five seconds and the information sample for every page of the measured information of measurement data (if not consistent with the instrument panel, please take the object as the standard.)
Light time of the background: 1 min.
| Content | Instruction |
 | This means the current display voltage is U, the unit is “V”, and the left picture is U=220.0V. |
 | This means the current display current is I, the unit is “A”, and the left picture is I=5.000A. |
 | This means the current display is the active power P, the unit is “kW”, and the left picture is P=1.100kW. |
 | This means the current display is the power factor Ft, and the left picture is Ft=1.000. |
Content | Instruction |
 | This means the current display is frequency F, and the left picture is F=50.00Hz. |
 | This means the current positive active energy EImp, the unit is “kWh”, the left picture is EImp=1.20kWh. |
 | This means the current negative active energy EExp, the unit is “kWh”, the left picture is EExp=1.00kWh. |
 | Means the current combination active energy total ComEp, the unit is “kWh”, the left picture is ComEp=2.20kWh. |
 | Means the current communication protocol is Modbus. |
| Represents 8 data bits, no effect bit and one stop bit of the current communication protocol. Means the current communication address |
Content | Instruction |
 | Means the current communication baud rate is 9600. |
Service and contact
Shenzhen Growatt New Energy Co., Ltd
4-13/F, Building A, Sino-German(Europe) Industrial Park, Hangcheng Ave, Baoan District, Shenzhen, China.
T: +86 0755 2747 1942
E: [email protected].
W: www.ginverter.com.
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