[Tagging] Is the difference between power station and sub station clear?

Janko Mihelić janjko at gmail.com
Fri Jan 25 09:29:03 GMT 2013

2013/1/25 Friedrich Volkmann <bsd at volki.at>

> power=station is used for large, fenced areas where high voltage is
> transformed to medium voltage. In German: Umspannwerk
> power=sub_station is used for smaller objects, like buildings with 2m each
> side and a height of a few m, where medium voltage is transformed to low
> voltage. In German: Trafohäuschen (or Trafostation)

Problem with this is that you have to define the exact area that delimits a
big from a small substation, and the exact voltage. What about stations
that are big in area, but low in voltage? And vice-versa?

Anyway, area is obvious from the polygon you have drawn, and the exact
voltage can be written in the voltage=* tag. There is really no reason,
except the historic one, to categorize power substations with those tags.

P.S. In the wiki under the part about voltage=* it says: The highest
voltage of operation within the facility.
Wouldn't it be better to enumerate all voltages that are in use in that
station? Something like voltage=110;35;10

Janko Mihelić
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