Chint DTSU666 Three-Phase Smart Meter, Direct 80 A, Modbus, MID

The DTSU666 is the meter most hybrid inverter makers specify for three-phase homes and small businesses. Installed at the grid connection, it measures each phase in both directions and reports to the inverter over RS485, so the inverter knows at any moment whether the building is importing or exporting. That reading drives zero export limits, battery charging from surplus solar and phase-balanced output. This version connects directly up to 80 A, so no current transformers are needed in a typical house, and it carries MID approval for billing-grade metering.

Key Features

• Three-phase, four-wire (3P+N), 3 x 230/400 V
• Direct connection, 5(80) A, no CTs needed
• Class 1 accuracy (MID Class B)
• Bidirectional active and reactive energy, voltage, current, power, power factor and frequency per phase
• RS485 with Modbus RTU, default 9600 bps
• Backlit LCD and pulse LED
• 35 mm DIN rail, 72 x 65 x 100 mm (4 modules), 0.4 kg
• Operating range -30 to +60 °C, IP20

Compatible with Deye hybrid inverters and with many other inverters that read a DTSU666. Check that your inverter supports this meter model before ordering.