Single-phase transformers are designed to provide users with more stable power products and reduce various problems caused by excessive electrical loads. There are usually three ways to install single-phase transformers.

First, independent installation. There is no connection between the installation of single-phase transformers and other low-voltage power grids. Single-phase transformers are self-contained systems and operate independently. In this installation method, the single-phase transformer is closest to the load center.

Second, branch type installation. In this installation method, the low-voltage branch line of the single-phase transformer should be kept disconnected from the main line, and a new power supply should be connected to achieve good and smooth conversion between the three-phase transformer power supply and the single-phase transformer power supply and the branch line.

Third, main line installation. This method is mainly suitable for situations where there is no three-phase load at the end of the three-phase station area. First, disconnect the main line, and connect the single-phase transformer to the end of the power supply main line to realize conversion between power sources.