Output Range:2KW,3KW,5KW,7.5KW,10KW,12KW,15KW,20KW. Frequency:50HZ or 60HZ Output Range:2KW,3KW,5KW,7.5KW,10KW,12KW,15KW,20KW.80% output power or 100% output power both available, depends on clients' requirements.100% copper wire,50% copper wire & 50% aluminium wire, 100% aluminium wire. ST Series Single Phase Synchronous Alternator