... 4)Drip proof type,IP21 PRODUT DESCRIPTION This series generators are to be used in town, countryside, worksites, ... adopt harmonic excitation system, easy operation and maintenance.The generators are three-phase, four-wire type, adopting star ... in the range of 0.8~1.0, the generators offer constant voltage, when sudden change (increase or decrease ... 90% STC Series Three Phase Synchronous Generator 30 KW