GF3 series silent diesel generator set: 1,output:5kw-600kw 2,engine brand:deutz,cummins,perkins,weichai,changchai,shangchai. 3,alternator type:common brush, brushless,stamford,leroy somar. 4,PACKAGE:WOODEN CASE/PLYWOOD CASE. 5,electrical system. 6,frequency:50/60hz 7,voltage:depend on your choice.