Smart Meter Carlo Gavazzi EM330

🔌 Carlo Gavazzi EM330 – Three-phase smart meter

🧩 Generalities

The Carlo Gavazzi EM330 is a three-phase smart meter energy meter designed for commercial and industrial applications. It works on the basis of current transformers (CT) and is ideal for the precise measurement of the energy consumed and generated in an electrical system. (Does not include CTs)

⚙️ Main technical characteristics

• Nominal voltage: 3×230/400 V (supports various three-phase networks)

• Measured current: via external CTs (maximum 5/6 A in secondary)

• Montage: on DIN rail, occupies 3 modules

• Accuracy class: Class 1 (active), Class B (MID – optional)

• Display: LCD with backlight, 3×8 digits

• Front protection: IP51

📊 Measured parameters

• Active and reactive energy (import/export)

• Active/reactive/apparent power (total and per phase)

• Voltage and current on each phase

• Power factor and frequency

• Peak power (demand) and total consumption

• Two configurable rates

🔌 Interfaces and communication

• RS-485 Modbus RTU – for integration into BMS, SCADA or remote monitoring systems

• M-Bus – optional

• Output pulses – for simple data transmissions to collection systems

• Digital input – for tariff switching or control functions

✅ Advanced features

• Bidirectional measurement – useful in solar panel or storage applications

• Detection of wrong connections at CT – warns if they are mounted backwards

• MID certification – for legal invoicing applications in the EU

• Flexible configuration – directly from the display or via software

🧰 Typical applications

• Monitoring of electricity consumption in commercial and industrial buildings

• Energy metering in photovoltaic (PV) panel systems

• Charging systems for electric vehicles (EV)

• Integration with energy management platforms