Electrical power unit

The design is the visual features of the ELECTRICAL POWER UNIT shown in the drawings, whether those features are features of one of shape, configuration, ornament or pattern or are a combination of any of these features. Drawings of the design are included, as follows: FIG. 1 is a front perspective view of an ELECTRICAL POWER UNIT showing our new design; FIG. 2 is a front elevation view thereof; FIG. 3 is a rear elevation view thereof; FIG. 4 is a top plan view thereof; FIG. 5 is a right side elevation view thereof; and FIG. 6 is a left side elevation view thereof. In the drawings, the stippled lines depict unclaimed subject matter only and form no part of the claimed design. The surface markings shown in stippled lines in the drawings, including the surface undulations visible in FIGS. 5 and 6, denote a woodgrain surface appearance and texture, and are hereby disclaimed. A bottom view forms no part of the claimed design.