SMA Energy Meter E-METER-20

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.