... 1500H warranty class H insulation ex-factory test report AC three phase, self-excited, brushless POWER WORLD V series environment ... etc.Specification:1) Engine: VOLVO2) Alternator:(Stamford, Leroy Somer, Marathon, ENGGA brushless alternator) 3 Phase 4 Wire, Brushless, H class ... 7) Key start panel control system as standard, digital auto-start panel is optional8) 8-hour operation base tank9) ...