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Voltage dip means that the RMS of voltage load decreases between the 10%-90% of the rated value and lasts for about 0.5 periods to 1 minute. Short duration voltage break means that the load voltage is lower than 10% of the RMS and lasts less than 1 minute. As the economy develops, electricity load structure is changing. And the load sensitive to voltage dip and short duration break also increases. Dynamic voltage recover is the ideal equipment to solve such problems.

Voltage drop means that the EMS of load voltage drops between 10%~90% of rated values, the duration time is 0.5 cycle to 1 minute. The voltage short interruption means that the load voltage EMS is lower than 10% and the duration time is less than 1 minute. As the economy develops in China, the electricity load structure changes and the load sensitive to voltage drop and voltage short interruption becomes more. DVR is the ideal equipment to solve such problems. 

The core of DVR is convertor which applies the IGBT modular structure. 10kV DVR uses the H-bridge structure and PWM phase displacement technology to save the harmonic content of output wave. 380V DVR applies the single power modular structure.