在进行试验前，保护阻抗要从带电部件上断开。
Protective impedance is disconnected from live parts before carrying out the tests.
应采用双重绝缘或加强绝缘将由保护阻抗连接的各个部件隔开。
Parts connected by protective impedance shall be separated by double insulation or reinforced insulation.
当选用低阻抗整流变压器时，全套设备由控制柜、电抗器、整流变压器三大部件组成。
When matched with low - impedance rectifier transformer, the whole set is composed of control cabinet, reactor and rectifier transformer.
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