RCS-901A采用了IO和I2A比相的选相元件,当____相间接地故障时,IO和I2A同相RCS-901A采用了IO和I2A比相的选相元件,当____相间接地故障时,IO和I2A同相选项1:AB选项2:BC选项3:CA选项4:选项5:答案:2