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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-HW Three-Phase Energy Meter Smart Power Sensor 80 A with 3 Split-Core CTs
The Huawei DTSU666-HW is the three-phase Smart Power Sensor for photovoltaic and storage systems with Huawei SUN2000 inverters. It measures voltage, current, power and power factor on the three phases in real time and counts separately the energy drawn from the grid and the energy fed into it, a figure that is essential for self-consumption management.
It is installed on a 35 mm DIN rail between the utility meter (or the main protective devices) and the loads of the building, and it communicates with the inverter via RS485 Modbus-RTU. It performs direct measurement up to 80 A per phase; for higher currents, external current transformers with a 1 A or 5 A secondary are used. In the standard supply configurations it is combined with three YDS60-80 split-core CTs.
Key features
Direct measurement up to 80 ACovers most three-phase installations without CTs; for higher currents, external current transformers are used.
Input for external CTsSecondary channel compatible with current transformers having a 1 A or 5 A secondary, to extend the range on commercial installations.
Split-core CTs includedThe typical supply includes three YDS60-80 split-core current transformers with cable, which can be fitted without cutting the conductors.
Accuracy class 1Voltage ±0.5 %, current and power ±1 %, frequency ±0.01 Hz.
3P3W and 3P4W networksWorks on three-phase networks with and without neutral, with line-to-line voltage up to 499 V AC.
RS485 Modbus-RTUConnection to Huawei SUN2000 inverters with the supplied RS485 cable; own consumption below 1.5 W.
Technical specifications
| Feature | Value |
|---|---|
| Product code | DTSU666-HW |
| Model | DTSU666-HW |
| Phases | Three-phase (3P3W / 3P4W) |
| Rated voltage | 230 V ac / 400 V ac; range 90 – 499 V ac (line-to-line voltage) |
| Nominal current | Direct measurement up to 80 A per phase |
| Measurement type | Direct up to 80 A; indirect above 80 A with external CTs (1 A or 5 A secondary) |
| Current transformers | 3 split-core CTs YDS60-80 with cable (standard supply) |
| Accuracy class | Class 1; voltage ±0.5 %, current and power ±1 %, frequency ±0.01 Hz |
| Communication | RS485, Modbus-RTU protocol (10 m RS485 cable included) |
| 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 × 100 × 80 mm |
| Weight | 0.5 kg |
Installation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.