... 304-456V 5.Output 380V+/-0.5% JJW, JSW Series Purifying AC voltage regulator, which combines integrated voltage regulator ... and purification, using sinusoidal voltage regulator technology, energy distribution, with regulator, high precision, fast dynamic response, distortion, load adaptability ... banking system, precision instruments, test equipment. 20KVA JJW precised single phase voltage regulator