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the damped oscillation wave appearing on the equipment terminal is mainly the repeatable transient phenomenon due to switching operation in power plants, high and medium voltage substations and heavy industrial equipment. damped oscillation waves may affect the reliable operation of equipment and systems. the damped oscillation wave generator is used to evaluate the performance of electrical and electronic equipment, devices or systems subjected to damped oscillation waves. the product meets the requirements of new standards such as iec61000-4-12 and gb/t17626.12.