MT33 series super power power frequency conversion on-line UPS power supply is a new generation of three advanced and three new products developed in response to the requirements of China's power grid environment and high-end power consumption sites. The system adopts online dual transformation topology architecture design, advanced DSP control technology, with the latest high-power IGB and SCR on the basis of stable, reliable and efficient full digital technology, designed the high-capacity high-power pure sine wave intelligent UPS integrating digitalization, informatization and network.