1.Three-phase Full-automatic Voltage Regulator For Communication Apparatus; 2.Input voltage:280-460V; 3.Output ... 380V. 1.Three-phase Full-automatic Voltage Regulator For Communication Apparatus;2.Input voltage:260-430V;280V-460V3.Output ... range:Television equipment,Medical device,Air-conditioner,Lighting equipment,Communication apparatus,Testing device,Computer,Duplicating machine;5.Specification: 6 ...