If the assembly has a low-voltage switch, ensure the switch is in the on position.
如果装置中有一个低压开关，确保开关处于接通位置。
The voltage stress of each main switch is only half of the input voltage.
其主开关管的电压应力均为输入电压的一半。
Were there no transformers to switch the voltage, long-distance transmission of electricity would be impossible?
要是没有变压器来调节电压，远距离输送电力是不可能的。
The application of phase selection close switch in low voltage electrical apparatus test was introduced.
介绍了低压电器产品试验中选相合闸开关的应用。
The application of phase selection close switch in low voltage electrical apparatus test was introduced.
介绍了低压电器产品试验中选相合闸开关的应用。
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