BTW, connected to this subject, a big difference between the German electrification realm (which, as an isolated island, includes Sweden) and other AC-electrified areas: the 16.7 Hz electricity comes from a separate railway electric grid, not the national one, and since it is one-phase rather than tri-phase, there is no need for phase transitions. The latter are neutral sections on which locomotives have to shut down, which (at least on EMUs) you usually hear as two loud bangs a few seconds apart (that's when pressurised air blows away the arc-light).

_{*Lunatic*, n.
One whose delusions are out of fashion.}