... ISO Certificate 3)1year or 1000hrs warranty 4)newspring HFO generator set1)generator set 1.5mw-8mw 2)CE & ISO Certificate 3)1year ... .5mw—8mw Noise level Below 65/75db at 7m (soundproof type) Engine brand MAN, SUZUKI, Ricardo, Detuz, Weichai, Jichai, ... , direct injection Alternator Stamford, marathon, Leroy somer, Yidaneng etc Type Brushless, insulation class: H Frequency 3% Frequency at stable state ...