Powerware Electric Group Co., Ltd. China (Wenzhou actually Clexane Electric Co., Ltd.) a. Product Overview TNS / SVC series of high-precision automatic three-phase AC power supply, single-phase power supply series of high-precision automatic combination of the three-phase phase regulation, to ensure a stable and secure each phase voltage, three-phase power input for four wire, star (Y-shaped) connection, output can be three-phase four-wire or three-phase three-wire system, by three meter indicate output current of each phase, the switch has been voltmeter and shift output of each phase detection line voltage. 20KVA and above specifications TNS series precision automatic three-phase AC voltage regulator, the three corresponding specifications of the single-phase power supply automatically constitute, using auto-type. II. Performance Input voltage 277-430V (three-phase four-wire) output voltage phase voltage 220V 380V line voltage regulation accuracy phase voltage 220V ± 3% 110V ± 6% frequency of 50Hz / 60Hz 246V ± 4% overvoltage adjustment time <1- sec (10% when the input voltage changes) Ambient temperature -10 ℃ + 40 ℃ temperature 5mΩ Contact: Miss Qian Business QQ :: 2795594429 Mobile: 15258079212