Standby phase transformer adaptive to multiple transformers

The invention belongs to the field of standby phase transformers, and particularly discloses a standby phase transformer adaptive to multiple transformers, which comprises a medium-voltage coil, a middle adjusting coil, a high-voltage reactor and a high-voltage coil which are sequentially connected in series, a plurality of high-voltage tapping points are arranged on the high-voltage coil, and the high voltage can be adjusted through electric connection of two different high-voltage tapping points; the high-voltage reactor is provided with a plurality of high-voltage impedance tapping points used for being connected with the middle adjusting coil, and the different high-voltage impedance tapping points are electrically connected through the middle adjusting coil to adjust high-voltage impedance. The transformer disclosed by the invention is convenient in voltage regulation, continuous and adjustable in high-medium operation impedance, and can be well matched with the impedance of other transformers, the imped