FoxESS
FoxESS DTSU666 Energy Meter Three-Phase 80 A RS485 Modbus
FoxESS DTSU666 Energy Meter Three-Phase 80 A RS485 Modbus
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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 sideFoxESS
FoxESS DTSU666 Energy Meter Three-Phase 80 A RS485 Modbus
The FoxESS DTSU666 is a three-phase (3P4W) direct measurement energy meter up to 80 A, made by CHINT for three-phase FoxESS inverters and storage systems. It is mounted on a 35 mm DIN rail in the electrical panel, at the grid connection point.
It measures the energy, power, voltage and current of the three phases bidirectionally and sends the data to the inverter over RS485 with Modbus protocol. It is the device that makes self-consumption monitoring, intelligent battery management and export limitation possible; accuracy class 1 ensures an error within ±1% on the energy measurements.
Key features
Three-phase direct measurement 80 ADirect connection on three phases and neutral, with no need for external current transformers.
Bidirectional measurementCounts the energy drawn from the grid and the energy fed in by the photovoltaic system separately.
RS485 Modbus at 9600 baudDirect connection to the FoxESS inverter for real time power regulation.
Zero export and self-consumptionEnables the limitation of the energy fed into the grid and the optimisation of the system's self-consumption.
Accuracy class 1Error within ±0.5% on voltage and within ±1% on current, power and energy.
DIN rail formatModular meter 72 mm wide for installation in the grid connection panel.
Technical specifications
| Feature | Value |
|---|---|
| Product code | ZTY0.464.1002 |
| Model | DTSU666 (CHINT for FoxESS) |
| Phases | Three-phase 3P4W |
| Nominal current | 0–80 A |
| Measurement type | Direct, without current transformers |
| Accuracy class | Class 1 (±0.5% voltage, ±1% current/power/energy) |
| Operating voltage | 176–288 V ac phase voltage, 304–499 V ac line-to-line |
| Communication | RS485, Modbus, 9600 baud |
| Mounting | 35 mm DIN rail |
| Dimensions | 88 × 70 × 65 mm |
| Body dimensions (FoxESS datasheet) | 72 × 100 × 85 mm |
| Weight | 0.4 kg |
Documentation
PDFDatasheet ZTY0.464.1002Official manufacturer documentInstallation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.