Huawei
Huawei DDSU666-H Single-Phase Meter Smart Power Sensor 100 A with Split-Core CT
Huawei DDSU666-H Single-Phase Meter Smart Power Sensor 100 A with Split-Core CT
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€120.72
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€120.72
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Businesses and non-Italian private customers: purchase with 22% VAT. The 10% rate is reserved for private customers resident in Italy — find out more.
Foreign companies entitled to 0% VAT: please write to info@litio.store.
Delivery in 10-20 daysMetering & sensorsAC sideHuawei
Huawei DDSU666-H Single-Phase Meter Smart Power Sensor 100 A with Split-Core CT
The Huawei DDSU666-H is the single-phase Smart Power Sensor used in photovoltaic and storage systems with Huawei SUN2000 inverters. It measures voltage, current, active power, power factor and the energy exchanged with the grid in both directions in real time, supplying the inverter with the power reading at the connection point needed for self-consumption management.
It is installed in the distribution board on a 35 mm DIN rail, downstream of the billing meter, and communicates with the inverter via RS485 with Modbus-RTU protocol. Current measurement is indirect, through a split-core current transformer 100 A / 40 mA, which allows installation without cutting the line cables. It enables functions such as export limitation (zero feed-in), load control and consumption monitoring in the FusionSolar app.
Key features
Bidirectional single-phase measurementDetects separately the energy drawn and the energy fed into the grid, with continuous reading of voltage, current, power and power factor.
Accuracy class 1Accuracy of ±0.5 % on voltage and current and ±1 % on power and energy, compliant with class 1 for active energy.
100 A split-core CTThe 100 A / 40 mA split-core current transformer is fitted onto the phase cable without having to cut it, reducing installation time.
RS485 Modbus-RTU communicationWorks with Huawei SUN2000 inverters and Smart dongles; baud rate selectable between 4800, 9600 (default), 19200 and 115200 bps.
Built-in LCD displayAllows the measured values to be checked and the communication parameters to be changed directly on the device.
Modular board formatMounting on a 35 mm DIN rail with self-consumption below 1.5 W and operating temperature from −25 °C to +60 °C.
Technical specifications
| Feature | Value |
|---|---|
| Product code | DDSU666-H |
| Model | DDSU666-H |
| Phases | Single-phase (1P2W) |
| Rated voltage | 230 V AC, 50/60 Hz |
| Nominal current | 0.5 – 100 A |
| Measurement type | Indirect with split-core CT 100 A / 40 mA (included) |
| Accuracy class | Class 1 (active energy); voltage and current ±0.5 %, power and energy ±1 % |
| Communication | RS485, Modbus-RTU protocol (4800 / 9600 / 19200 / 115200 bps, default 9600) |
| Display | LCD |
| Own power consumption | < 1,5 W |
| Mounting | 35 mm DIN rail |
| Operating temperature | −25 °C … +60 °C |
| Protection rating | Not stated by the manufacturer |
| Dimensions | 72 × 18.5 × 40 mm |
| Weight | 0.2 kg |
Documentation
PDFDatasheet DDSU666-HOfficial manufacturer documentInstallation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.