通过接地变压器结构型式、容量和阻抗电压的分析研究，得出正确选择接地变压器的方法。
Based on the analysis of the structural type, capacitance and impedance voltage of grounding transformer, a proper method of choosing grounding transformer is proposed in this paper.
由于变压器和滤波电容(假定)足够大，因此当负载阻抗改变时供电电压几乎没有变化。
Depending upon the transformer and storage capacitor sizes in the power supply the output voltage will not vary significantly when the load impedance is changed.
因此，该类变压器的短路阻抗电压较高。
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