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Public-images-osm logo.svg voltage-low
Using this tag is discouraged, use guidelines below instead. Edit or translate this description.
Group: Power
Used on these elements
should not be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations
Status: deprecatedPage for proposal

exclamation mark

This feature has been labeled as deprecated. The recommended replacement is: guidelines below.
The reason is documented in Deprecated features. You are still free to continue to use or interpret this tag as you see fit since OpenStreetMap does not have “banned features”.
Under no circumstances should you (semi-)automatically change “deprecated” tags to something else in the database on a large scale without conforming to the automated edits code of conduct. Any such change will be reverted.

Replacement guidelines

A transformer is a power device and it has got different interfaces that can be documented separately. See dedicated documentation to get more information about those interfaces.

Voltages are bound to those interfaces and voltage-high=* / voltage-low=* can be in use in many places. Some mappers may be more confident by using high and low voltages and such information may help to define primary, secondary, tertiary voltages as following:

  • voltage-low=* = voltage:secondary=* in case of down transforming, like in power consuming places. The power is taken from high voltage grid to feed some distribution network at a lower voltage
  • voltage-low=* = voltage:primary=* in up transforming places like power plants. Generators produce pretty low voltage power whereas transmission power grids operate at very high voltage. According to definition, the power generator side is definitely the primary interface and here at lower voltage than the secondary.