Key:cables

From OpenStreetMap Wiki
Jump to: navigation, search
Available languages — Key:cables
Afrikaans Alemannisch aragonés asturianu azərbaycanca Bahasa Indonesia Bahasa Melayu Bân-lâm-gú Basa Jawa Baso Minangkabau bosanski brezhoneg català čeština dansk Deutsch eesti English español Esperanto estremeñu euskara français Frysk Gaeilge Gàidhlig galego Hausa hrvatski Igbo interlingua Interlingue isiXhosa isiZulu íslenska italiano Kiswahili Kreyòl ayisyen kréyòl gwadloupéyen Kurdî latviešu Lëtzebuergesch lietuvių magyar Malagasy Malti Nederlands Nedersaksies norsk bokmål norsk nynorsk occitan Oromoo oʻzbekcha/ўзбекча Plattdüütsch polski português português do Brasil română shqip slovenčina slovenščina Soomaaliga suomi svenska Tiếng Việt Türkçe Vahcuengh vèneto Wolof Yorùbá Zazaki српски / srpski беларуская български қазақша македонски монгол русский тоҷикӣ українська Ελληνικά Հայերեն ქართული नेपाली मराठी हिन्दी অসমীয়া বাংলা ਪੰਜਾਬੀ ગુજરાતી ଓଡ଼ିଆ தமிழ் తెలుగు ಕನ್ನಡ മലയാളം සිංහල ไทย မြန်မာဘာသာ ລາວ ភាសាខ្មែរ ⵜⴰⵎⴰⵣⵉⵖⵜ አማርኛ 한국어 日本語 中文(简体)‎ 吴语 粵語 中文(繁體)‎ ייִדיש עברית اردو العربية پښتو سنڌي فارسی ދިވެހިބަސް
Public-images-osm logo.svg cables
Power-tower.JPG
Description
Number of electrically separated power-carrying conductors in a power line
Group: Power
Used on these elements
use on nodes unspecifieduse on ways unspecifieduse on areas unspecifieduse on relations unspecified
Useful combination
Status: Unspecified

This tag can be used to note the number of electrically separated power-carrying conductors (cables in OSM terminology) in a power line (power=line) or a power cable (power=cable). Power transmission and distribution grids typically use three-phase alternating current (AC), so each electrical circuit consists of three conductors. Note however:

  • Some circuits use only one or two conductors, including:
    • high voltage direct current (HVDC) transmission links,
    • single-phase or split-phase AC circuits for:
      • single wire earth return (SWER) medium voltage lines sometimes used in rural areas,
      • supply to electric railroads (e.g., German traction power network),
      • street lighting,
      • small end customers (such as individual households).
    • terminal branches of the 3-phase distribution grid that carry only 2 of the phases for an immediate connection to a small set of end customers.
  • Multiple independent circuits can share the same towers/poles. You may use multiple semicolon-separated values grouped by voltage (for example cables=6;3 for a line having two circuits of the first voltage and one circuit of the second voltage). See also circuits=*.
  • Each conductor can be split into multiple sub-conductors (wires in OSM terminology) that are close to each other and electrically connected (this is done to reduce corona losses at high voltages and to increase the AC current carrying capacity of the conductor, as AC current tends to run best near the surface of each wire). See wires=*.
  • Do not include cables that do not carry power, such as:
    • protective ground cables (also called earth wires),
    • passive loop cables (to reduce the magnetic field)
    • telephone or other communications cables,
    • guy wires (for mechanical support).

See also

  • circuits=* Number of electrical circuits of power line or cable connection.
  • cable_number=* Number of cables supporting simple-suspension/Tibetan style bridges

A note on terminology

The names of the keys wires=* and cables=* may have been chosen a little bit unfortunate. The more common term for "cable" is conductor which may be a single conductor (IEV ref 466-10-19) corresponding to wires=single or a conductor bundle (IEV ref 466-10-20) corresponding to wires=double,triple,...