System specifications *Sigen Energy Controller *Sigen Battery with LED Sigen Energy Gateway Sigen Datalogger No.of MPP. trackers 2 / 3/ 4 No.of PV strings per MPPT 1 Max.input current per MPPT 16 A AC Output (on-grid) Nominal output voltage 380 / 400 V Efficiency Max. efficiency 98.1%/98.2%/98.3% General Cooling Natural convection Ingress protection rating IP66