A power train, the power train comprising: a load; a first power supply for providing power to the load; a rectifier unit configured to convert AC power from the first power supply to DC power; a main converter configured to convert said DC power from the rectifier unit to AC power for powering the load; a DC-link capacitor wherein said DC link capacitor is connected between the rectifier unit and the main converter; and a pre-charge circuitry, the pre-charge circuitry comprising: pre-charge means configured to, during a first, pre-charge phase, prevent said power from being provided from said first power supply to said load but provide power to said DC-link capacitor to charge said DC-link capacitor, and, further configured to, during a second, post-charge phase, allow said power to be provided from said first power supply to said load; a power converter; characterized in that said pre-charge circuitry further comprising: a second power supply wherein the power converter is configured to be operated from the second power supply; wherein said pre-charge means comprises a transformer, the transformer comprising: an inductor connected in series with the first power supply and the DC-link capacitor, wherein said inductor comprises a primary winding of said transformer; and a secondary winding electrically connected to the power converter; wherein during the pre-charge phase, the power converter is configured to induce power in the inductor by providing said power from said second power supply to said secondary winding, wherein the induced power is configured to charge said DC-link capacitor. a load; a first power supply for providing power to the load; a rectifier unit configured to convert AC power from the first power supply to DC power; a main converter configured to convert said DC power from the rectifier unit to AC power for powering the load; a DC-link capacitor wherein said DC link capacitor is connected between the rectifier unit and the main converter; and a pre-charge circuitry, the pre-charge circuitry comprising: pre-charge means configured to, during a first, pre-charge phase, prevent said power from being provided from said first power supply to said load but provide power to said DC-link capacitor to charge said DC-link capacitor, and, further configured to, during a second, post-charge phase, allow said power to be provided from said first power supply to said load; a power converter; characterized in that said pre-charge circuitry further comprising: a second power supply wherein the power converter is configured to be operated from the second power supply; wherein said pre-charge means comprises a transformer, the transformer comprising: an inductor connected in series with the first power supply and the DC-link capacitor, wherein said inductor comprises a primary winding of said transformer; and a secondary winding electrically connected to the power converter; pre-charge means configured to, during a first, pre-charge phase, prevent said power from being provided from said first power supply to said load but provide power to said DC-link capacitor to charge said DC-link capacitor, and, further configured to, during a second, post-charge phase, allow said power to be provided from said first power supply to said load; a power converter; characterized in that said pre-charge circuitry further comprising: a second power supply wherein the power converter is configured to be operated from the second power supply; wherein said pre-charge means comprises a transformer, the transformer comprising: an inductor connected in series with the first power supply and the DC-link capacitor, wherein said inductor comprises a primary winding of said transformer; and a secondary winding electrically connected to the power converter; an inductor connected in series with the first power supply and the DC-link capacitor, wherein said inductor comprises a primary winding of said transformer; and a secondary winding electrically connected to the power converter; wherein during the pre-charge phase, the power converter is configured to induce power in the inductor by providing said power from said second power supply to said secondary winding, wherein the induced power is configured to charge said DC-link capacitor.