... frequency: 47 to 63Hz Withstand voltage: I/P-O/P: 3.0kV AC/1 minute I/P-F/G: 1.5kV AC/1 minute ... O/P-F/G: 0.5kV AC/1 minuteRise ... EMC standards: GB9254, EN55022 Class B, EN55024 , EN61000-3-2,3, EN61000-4-2, 3, 4, 5, 6, 8, 11 Cooling method: convection ...