Abstract: A machine includes a high voltage element and an enclosure surrounding the high voltage element. The enclosure includes a first insulating insert disposed at least partially within a first wall and being electrically non-conductive and surrounding a first conductive insert and an enclosure cover formed at least partially of an electrically non-conducting substrate and having a first opening formed therein sized to allow a first fastener or an extension of the first conductive insert to pass through it. Removal of the enclosure cover causes the high high-voltage element to cease operating.

Abstract: An electric machine is disclosed having a stator and a rotor, the stator comprising one or more windings that “turn” between passes through the stator. The turn portions of the windings are cast within a heat-conductive material such as aluminum that conducts heat away from the turn portions. The casting also defines a cavity for the flow of a heat-carrying fluid (such as water) to remove heat more efficiently from the turn portions. In some embodiments, the windings are electrically insulated (for example, using a ceramic insulator) before the casting.

Abstract: A machine includes a high voltage element and an enclosure surrounding the high voltage element. The enclosure includes a first insulating insert disposed at least partially within a first wall and being electrically non-conductive and surrounding a first conductive insert and an enclosure cover formed at least partially of an electrically non-conducting substrate and having a first opening formed therein sized to allow a first fastener or an extension of the first conductive insert to pass through it. Removal of the enclosure cover causes the high high-voltage element to cease operating.