The ornamental design for a powerdistributionlinesensor casing, as shown and described.
FIG. 1 is a top view of the power distribution line sensor casing;
FIG. 2 is a left-side elevational view thereof;
FIG. 3 is a right-side elevational view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a front right isometric view thereof;
FIG. 8 is a rear right isometric view thereof; and,
FIG. 9 is an isometric view of the bottom side structure.
When broken lines are present in a figure, including those forming text, that portion of the figure is present for illustrative purposes only and forms no part of the claimed design.