The SMA Energy Meter E-METER-20 is a high-performance three-phase bidirectional energy meter for intelligent energy management in PV systems, providing precise phase-exact measurements via Ethernet connectivity. Product Description This compact meter measures grid feed-in, purchased electricity, and PV generation with 1% accuracy, communicating data via Ethernet to SMA devices like Sunny Home Manager or Data Manager M. It enables dynamic power limitation, self-consumption optimisation, and comprehensive energy monitoring through Sunny Portal. Key Features Three-phase measurement: Phase-exact readings for balanced load management. Fast data transmission: 1000 ms measurement cycle via Ethernet/Speedwire. Universal compatibility: Works with existing energy meters and SMA Smart Home systems. Plug-and-play installation: Top-hat rail mounting in distribution boards. Dynamic power control: Enables zero-export and self-consumption optimisation. Visualisation: Real-time data in Sunny Portal and local web interface. Technical Details Communication: Ethernet (10/100 Mbit/s, RJ45). Nominal voltage: 230/400 V AC. Frequency: 50/60 Hz (±5%). Nominal current: 5 A (63 A limiting per conductor). Accuracy: Class 1.0 (1% measurement error). Self-consumption: < 2–3 W. Current transformers: Required for 63 A operation (included or optional). Physical Specifications Dimensions (W × H × D): 70 × 88 × 65 mm (4 TE top-hat rail). Weight: 0.3 kg. Protection rating: IP20 (indoor switch cabinet). Operating temperature: −25°C to +40°C. Mounting: Top-hat rail (EN 60715). Status display: 2 LEDs. System & Application Notes Applications: PV self-consumption, zero-export, energy management with SMA inverters. Compatibility: Sunny Home Manager 2.0+, Data Manager M, Sunny Boy Smart Energy. Installation: Distribution board with CTs on grid supply side; Ethernet to router/SMA device. Single-phase use: Configurable for single-phase operation. Warranty: 2 years.
