Brushless MVC Series Alternator (30KVA~1500KVA), IP21~23, the insulation system is Class H, AVR. Brushless MVC Series Alternator (30KVA~1500KVA), IP21~23, the insulation system is Class H, AVR. MGA225--------24~75kw MGA270--------80~220kw MGA315--------200~400kw MGA355--------450~560kw MGA400--------560~1200kw Brushless MVC Series Alternator (30KVA~1500KVA)