Prostar 100KVA/80KW Low Frequency Online UPS is adopting the technology , which combined with the world’s most advanced DSP digital control technology currently, and IGBT high frequency Pulse Width Modulation technique (PWM).Double-conversion online topology design makes the output frequency of UPS, which used for tracking, phase-locking, voltage regulator and filter out noise, interference from the power grid fluctuations in pure sine wave power supply, and make the UPS more comprehensive and perfectly protection for the users.