Hoymiles Smart Meter 2T-G3 with 2xCT 120A (3-phase)

Hoymiles Smart Meter 2T-G3 is a modular, rail-mounted electricity meter designed for three-phase installations 3×230/400 V. The device works with external current transformers (CT), enabling bidirectional energy measurement, monitoring of network parameters, and data transmission to inverters in photovoltaic systems and energy storage.

The meter is manufactured by Hoymiles Power Electronics Inc., a company specializing in solutions for photovoltaic installations and energy storage systems. The device is designed for easy integration with inverters and energy management systems using the standard RS485 communication interface and Modbus RTU protocol.

Key electrical and functional parameters

• Network type: Three-phase, four-wire (3×230/400 V)
• Input voltage range: 3×230/400 ±20%
• Rated current: 120 A (using CT 120 A / 40 mA)
• Overload capacity: 1.2× current/voltage (continuous) / 2× (1 s)
• Network frequency: 50 Hz (±0.5%)
• Measurement accuracy: Voltage ±0.5%; Current ±0.5%; Active power ±0.5%; Reactive power ±0.5%; Apparent power ±0.5%
• Active energy class: Class B (with disconnecting transformer)
• Reactive energy class: Class 2
• Communication interface: RS485, Modbus RTU protocol, addresses 1–247, speed 1200–38400 bps
• Response time: ≤100 ms for voltage/current/power, ≤1 s for electrical energy

Mechanical parameters

• Mounting: On DIN rail
• Protection degree: IP20
• Dimensions (W × H × D): 18 × 108.2 × 70 mm
• Weight: 63.15 g
• Operating temperature range: -40 to +70 °C
• Relative humidity: ≤95%, non-condensing
• Altitude above sea level: ≤2000 m