... damage of controller, when under high voltage.Wind Generator SZ3K-20KW Controller TECHNOLOGY SPECS ITEMMODESZ3KW-CTSZ5KW-CTSZ10KW-CTSZ20KW ... notpage 2 Output DC voltage, output DC current, generator RPM, generator temperature, wind speed, electric supply available or not, ... operational mode, and generator anglepage 3 Temperature indoors, brake state (on/off ), ...