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Public-images-osm logo.svg voltage:tertiary
Voltage of a transformer interface which delivers power to small loads or auxiliary services Edit or translate this description.
Group: Power
Used on these elements
may be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations


Useful combination
Status: approvedPage for proposal

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.

The tertiary voltage is the voltage bound to the tertiary interface of a power transformer, that outputs the power to small loads.
It may correspond to (auxiliary winding) when feeding auxiliary services of local power grid facilities.
Some configurations may be complex, see windings=* for more information.