The SI32 is Veichi's IP65 wall-mount solar pumping inverter for agricultural and industrial duties from 4 to 22 kW, with the highest MPPT efficiency stated in the Veichi solar range — at least 99.9%. PV input spans 250–800 VDC with anti-reverse-connection and anti-backflow protection, and AC/DC hybrid input (three-phase 380–480 V) keeps water flowing around the clock.

Four control modes (V/F, SVC, FVC and V-F split) drive asynchronous, synchronous and synchronous-reluctance motors, and constant-pressure control includes PID disconnection detection. The protection list runs to seventeen functions, from dry-out, minimum power and overflow to stall and ground-fault protection. The complete seven-model table below covers the full range.