Impulse voltage test systems are used for impulse voltage testing of transformers, cables, gas-insulated switchgears (GIS), insulators, arresters, and other high-voltage devices. The test systems generate lightning impulse voltage (LI, 1.2/50μs), chopping lightning impulse voltages (LIC, front time 1.2μs, front, crest or tail chopped), and switching impulse voltage (SI, 250/2500μs) in accordance with IEC 60060-1; as well as IEC 60076-3 for transformers, and IEC 62067, 60840 and 60502-1 for cables), etc. And it can be used for steeping and oscillating impulse test by adding some extra equipment.