3-phase to 1-phase transformer featuring rated primary voltage of 380V, maximum secondary voltage of 150kV and rated power of 4.5kV. The transformer is equipped with a OIP bushing having capacitive tap. The rated bushing current and voltage are respectively 630A and 300kV. The transformer is equipped with a control console allows the setting of voltage profiles by controlling amplitude adjustment of the voltage generated in accordance with specific timing. Moreover the transformer is equipped with ancillary devices like capacitive voltage dividers and ad-hoc electrodes.