... generator reliable, Stamford Type of AC generators, Three Phase, IP23, Class H, Rated voltage 400V, 110-690V for option, AVR ... . EXCITATION SYSTEM:The standard AVR are EA05A-3,EA04: SX440 , SX460 or MAX321(pHonalAVR) ... ωSlonsAll the adjusting rate of stable VOltageof the AVR± 1%. SX440 has parallel connection ,low frequency ... under corrosive environment. Brushless synchronous generator