SUNGROW DTSU666 three-phase smart energy meter

The Sungrow DTSU666 5(80A) is a three-phase smart energy meter designed to measure electrical parameters at the grid connection point of a solar power plant. It operates on 230/400 V grids, supports a maximum operating current of 80 A, and communicates via an RS485 interface. It is designed to work in conjunction with Sungrow (and many other manufacturers') grid-tied or hybrid solar inverters.

The technical specifications indicate Class 1 measurement accuracy, an IP20 protection rating, and an operating temperature range of −30 °C to +60 °C. The meter is designed for mounting on a 35 mm DIN rail, and its dimensions are 72 × 65 × 100 mm.

Its net weight is 0.4 kg. This is a monitoring component, not a certified billing meter; please use it only in accordance with compatible system design and applicable local requirements.

This meter is an essential accessory if you want to use the advanced energy management, self-consumption optimization, or zero-export functions of your Sungrow (or compatible) inverter – without it, the inverter cannot "see" how much energy the house consumes or exports to the grid.