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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 DTSU666-H Three-Phase Meter Smart Power Sensor 250 A with 3 Split-Core CTs
The Huawei DTSU666-H in the 250 A version is the three-phase Smart Power Sensor intended for commercial-scale photovoltaic and storage systems with Huawei SUN2000 inverters. It measures voltage, current, active and reactive power and energy on the three phases, distinguishing the energy drawn from the grid from the energy fed into it.
It is installed on a 35 mm DIN rail in the board at the connection point and communicates with the inverter or with the SmartLogger via RS485 Modbus-RTU. Current measurement is carried out through three 250 A split-core current transformers with a 50 mA secondary, which can be fitted onto the phase cables without breaking them. It allows optimised self-consumption, export limitation and monitoring in FusionSolar.
Key features
Capacity up to 250 A per phaseSuitable for commercial and industrial systems larger than those served by the 100 A version.
Three split-core CTs 250 A / 50 mASplit core for installation on existing phase conductors without cutting the line.
3P4W and 3P3W networksCan be used both on three-phase networks with neutral and on three-wire three-phase networks.
Accuracy class 1Active energy measurement in class 1 according to Huawei documentation.
RS485 Modbus-RTUDirect integration with SUN2000 inverters, Smart Dongle and SmartLogger; 4800 or 9600 bps.
LCD display and DIN formatLocal reading of the quantities and configuration of the Modbus address directly from the board.
Technical specifications
| Feature | Value |
|---|---|
| Product code | DTSU_250A |
| Model | DTSU666-H 250 A |
| Phases | Three-phase (3P4W / 3P3W) |
| Rated voltage | 230 V AC / 400 V AC, 50/60 Hz |
| Nominal current | 0 – 250 A |
| Measurement type | Indirect with 3 split-core CTs 250 A / 50 mA (included) |
| Accuracy class | Class 1 (active energy) |
| Communication | RS485, Modbus-RTU protocol (4800 / 9600 bps, default 9600) |
| Energy reading range | 0,00 kWh – 999999,9 kWh |
| Own power consumption | ≤ 1.5 W / 6 VA (voltage circuit); ≤ 0.2 – 0.4 VA (current circuit) |
| Mounting | 35 mm DIN rail |
| Operating temperature | −25 °C … +60 °C |
| Relative humidity | ≤ 75 % |
| Protection rating | Not stated by the manufacturer |
| Dimensions | 72 × 100 × 66 mm |
| Weight | 0.4 kg |
Documentation
PDFDatasheet DTSU_250AOfficial manufacturer documentInstallation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.