The Three-Phase Transformer is a three-phase power tranformer, made up of a single magnetic core with three branches, enclosed in a half-size EMS module. It is used to adjust the ac power network voltage to a value more suitable for certain power electronics applications. For example, the Three-Phase Transformer is used to adapt the value of the three-phase ac power network voltage to the value of the dc bus voltage in three-phase PWM rectifiers/inverters. Twelve banana jacks on the module front panel provide individual access to each phase of the power transformer, allowing connection in wye or delta configuration.