Stabilize your commercial solar network and maximize your energy management with the rugged Huawei DTSU666-HW Smart Power Meter. As industrial energy installations grow larger, tracking the boundary lines between power consumption, battery collection, and grid interaction becomes essential to business performance. The DTSU666-HW intelligent power meter addresses this operational challenge directly. It gives system managers comprehensive, full-temperature insight into active, reactive, and bidirectional electrical movement within a compact, space-saving format.
The Huawei DTSU666-HW Smart Power Meter (Smart Power Sensor) is an industrial-grade, three-phase intelligent energy management sensor designed for modern solar photovoltaic (PV) applications. Operating seamlessly within the Huawei FusionSolar ecosystem, this meter reads bidirectional electrical parameters to manage automated export limitations, monitor load consumption, and balance battery storage dynamics with precision.
 This advanced smart meter is explicitly built for:
Commercial & Industrial (C&I) Solar Systems: Perfect for engineers building three-phase commercial solar arrays that require grid-connection power balancing.
Zero-Export & Restricted Grid Zones: Built for businesses running in areas with strict regulations prohibiting or limiting solar power injection back into the municipal grid.
Commercial Energy Storage Operators: Ideal for managers regulating large commercial energy storage systems (ESS) who need continuous charging and discharging optimization.
Dual-Channel High Current Management: Offers massive flexibility, featuring an integrated direct connection capacity for currents up to 80 A or a second channel to adapt larger external current transformers (CTs) for massive commercial scales.
Class 1 Measurement Accuracy: Operates at a higher certified performance metric (under 1% error margins) across its entire working temperature scale to provide highly accurate billing and data feedback.
Dynamic Export Limitation Control: Transmits instantaneous electrical data back to Huawei smart inverters, allowing dynamic adjustment of active solar output to conform exactly to grid contracts.
Ultra-Low Internal Power Consumption: Energy-efficient baseline layout draws less than 1.5 W of structural power, saving energy even during 24/7 system tracking.
Universal 3P4W and 3P3W Grid Matching: Designed with adaptable firmware to smoothly accommodate both three-phase three-wire and three-phase four-wire electrical setups.
| Parameter | Specification Details |
| Product Model Name | DTSU666-HW / YDS60-80 |
| Grid Grid Compatibility | 3-Phase 3-Wire (3P3W) / 3-Phase 4-Wire (3P4W) |
| Input Grid Line Voltage | 90 V AC to 500 V AC (Up to 1000 V AC with external PT) |
| Phase Voltage Range | 52 V AC to 577 V AC |
| Direct Current Interface Range | 0 A to 80 A (Channel 1 Direct Connection) |
| External CT Interface Range | Supported via Channel 2 (Secondary current 1A or 5A, Class 0.5) |
| Overall Structural Consumption | Â 1.5W |
| Measurement Accuracy Class | Class 1 (Voltage/Current 0.5\%, Power/Energy \pm1\%) |
| Data Interface Protocol | RS485 / Modbus-RTU |
| Supported Baud Rates | 4800 / 9600 / 19200 / 115200 bps (9600 Default) |
| Physical Mounting Solution | Standard DIN 35mm Rail |
| Structural Net Weight | Less than 0.5 kg (1.1 lbs) |
| Dimensions | 10.0 cm  7.2 cm  8.0 cm |
| Environmental Protection Range | Operating: –25°C to 60°C | Humidity: 5% to 95% RH |
Zero-Feed Solar Applications: Continually tracks your commercial facility’s line activity to dial back inverter production when local generation matches local consumption.
Commercial Battery Storage Systems: Directs precise charging and discharging schedules for commercial storage arrays to maximize clean power savings.
Sub-Metering Industrial Sectors: Isolates and documents exact real-time voltage, power usage, and direction indices across targeted operational lines.
| Weight | 0.5 kg |
|---|---|
| Dimensions | 10.0 × 7.2 × 8.0 cm |
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