... Somer alternatorc,12V/24V DC start motor and storage batteryd,Brushless, Self-excited, IP23, insulation class H alternator e ... panel is optionalg,8-hour operation base tankh,All generator sets are gone through rigorous testing before being released ... starting Stroke 4 stroke4),Alternator Specification,Alternator BrandStamfordExciter Type Brushless, Self-excited Rated Speed 1500/1800rpm Rated Frequency ...