本开关适用于频率50、60Hz，额定电压35KV，额定电流800A，分接位置为5的三相油浸式电力变压器，调压部位为中部调压，由安装在变压器油箱侧面的操作机构来操作，在无励磁状态下分接调换。

    This switch is suitable for the three-phase oil-immersed transformer with rated voltage 35KV,rated current 800A.It has five tap positions and being regulated on the middle part of body, we can operate it by using of the manipulating framework at one side of transformer oil tank. It must be operated under no-energized condition.