Sorry but I haven't got it completely.
As I see just four wires, does this mean HV and LV share the neutral (grounded) wire or is it just not visible?
In France for example even a LV neutral is regarded as an active conductor and is always isolated.
Here with us distribution is always 3 wire, usually IT (often with inductive starpoint to connection to earth).
The strangest thing about that topic is that I have never taken care of those poles as here where I live and work just everything is buried in the ground including phone, cable tv and the 20kV distribution. Only exception is 110/220kV feeding from the power station.
We are so to say more or less a pole free zone. Nevertheless there are quite a few places that have overhead connections elsewhere in Germany.
