... alternator, single bearing, flange connection, IP23, H insulation class, with AVR. 4.auto control panel, with LCD display. 5.Engine mounted ... and 4 WiresNumber of Bearing1Protection GradeIP23Altitude≤1000mExciter TypeBrushless ,Self-exciting, AVR automatic voltage regulatingInsulation ClassHTelephone Influence Factor (TIF)≤50THF≤2%Voltage ...