Cummins Diesel Generator 1. Water cooled 2. Insulation: Class H 3. Warranty: one year 4. Fast Delivery Cummins Diesel GeneratorProduct DescriptionGen set ... ,120/220V,240/415/V, etc.3) Engine models: Cummins, Perkins(Lovol), Deutz, Daewoo and other Chinese brand engines, ... IP237) Insulation: Class H8) 8hrs operation base tank9) open, silent, trailer, weather proof canopy are optionalEngine1) 4,6,8,10 ...