... is required. Specifications: Input Voltage: 160V-250V 70V-130V Output voltage: 220V+/-3% with 110V+/-3% Phase: Single phase Frequency: 50/60Hz Response Time ... .5KW, SVC-1000 1KW, SVC-1500 1.5KW, SVC-2000 2KW SVC-3000 3KW, SVC-5000 5KW, SVC-8000 8KW, SVC-10000 10KW SVC-15000 15KW, SVC-20000 20KW Automatic voltage stabilizer (SVC)