Tag:electrified:contact_line=catenary
 electrified:contact_line = catenary
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| Description |
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Overhead contact lines with catenary suspension, consisting of one (or two) supporting catenary wires located above the contact wire(s) 
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| Group: railways |
| Used on these elements |
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| Requires |
Status: approved
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| Tools for this tag |
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A type of overhead line where the contact wire is supported by messenger wires.
An overhead catenary is a type of overhead electrification where the contact wire (which carries the current and the current collector) is supported by at least one messenger wire above in shape of a curve (the catenary) to make the wires more rigid. It's the standard in many heavy railways due to the support of higher speeds but also is commonly found on tramways.
Details for tagging catenary wires
| Key | Value | Description | Photos |
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catenary |
simple |
simple catenary system with messenger wire and contact wire connected with dropper wires | 
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stiched |
catenary systems that consist in comparison to the "simple" system described above of additional Y-wires at catenary masts | 
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compound |
catenary systems that consist in comparison to the "stitched" system described above of additional auxiliary messenger wire | 
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catenary:muffled |
yes |
if the catenary has dampers | 
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Also at catenaries there is usually one contact wire and one catenary wire in the catenary system. However, there are also designs in which there are two contact wires or two catenary wires. Please note that it is not intended to map catenary:contact_wire=singlecatenary:auxiliary_wire=singlecatenary:messenger_wire=singlesingle is assumed by default.
| Key | Value | Description | Photo |
|---|---|---|---|
catenary:contact_wire |
double |
added, if the catenary system has a doubled contact wire | 
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catenary:auxiliary_wire |
double |
added, if the catenary system has a doubled auxiliary messenger wire | I've never heared about that, but we are prepared of that |
catenary:messenger_wire |
double |
added, if the catenary system has a doubled messenger wire | 
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