... servo motor controlling AC full automatic voltage regulator, which has single phase and three phases 1) ST series AC automatic voltage regulator (stabilizer) is made in ... 10% function - Capacity: ST500W, 500VA ST750W, 750VA ST1000W, 1000VA ST1500W, 1500VA ST2000W, 2000VA ST3000W, 3000VA ST4000W, 4000VA ST5000W, 5000VA 3) Dimension ...