Sorry, I was wrong, the catenary should be around 16 pixels high to be in scale. Currently the catenary is around 22 pixels. The poles are currently 4 tilesteps (16 pixels) away from the centre of the track.
So, to see what looks like what, I made some tests:
The height of the catenary from track is, as well as the distance from centre, as much in scale as possible.
2 tilesteps (8 pixels) from track centre to pole
16 pixels from track centre to catenary

Two things: Consider the fact that I apperently have not painted the trains truly in scale regarding height, some of the pantographs seems to miss the catenary by reaching to far. Although that could probably be resolved by repainting the pantographs.
The other is that the poles end up closer to the track than the platform does. The tracks itself are (apperently also

) not painted truly in scale. 1,435m rounded to 1,5=1 tilestep = 4 pixels and when I measure the tracks I get 1½ tilestep (ca 6 pixels) wide. Repainting the tracks is quite a big job....
What do you think?
Edit:
I tried to suit the catenary and pole to fit the existing graphics and came up with this:
11 pixels from track to centre of pole
18 pixels from track centre to catenary
