确保所有输入输出电缆线路设置正确，并检查输入相位旋转。

Make sure all the input and output cabling has been performed correctly and check the input phase rotation.

youdao

确保所有输入输出电缆线路设置正确，并检查输入相位旋转。

Make sure all the input and output cabling has been performed correctly and check the input phase rotation.

youdao