1,AVR control 2,IP22, Insulation Class H 3,2/3 pitch winding 4,Single or double bearing option 5,ISO9001- ... other alternators. Standard 2/3pitch windings avoid excessive neutral current.3, Dynamically balanced rotors, with single or two sealed ball bearings ... ,SX440,MX341,AS440,SX440T,MX321 450kva/360kw synchronous brushless denyo diesel generator