It also gives out the criteria for selection of system parameters and studies the limit mode of over-voltage of working frequency under different conditions.
给出了系统参数选择的依据，研究了工频过电压在不同条件下的限制方式。
It also gives out the criteria for selection of system parameters and studies the limit mode of over-voltage of working frequency under different conditions.
给出了系统参数选择的依据，研究了工频过电压在不同条件下的限制方式。
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