... functions 2.high quality &competive price electrodialysis rectifier used for food Product usageSuitable for seawater desalination , the sea salt refining dairy, ... and purification of chemical products, etc. Also be used for food, light industries,,and extract high pure water treatment ... Parameters Input voltage220V AC 380V AC(Three-phase four-wire) 415V AC 50-60HZOutput DC current20A,50A,250A,300A ...