Key:contact_line
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 contact_line
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| Description |
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Localized components of electrical overhead wires 
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| Used on these elements |
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| Useful combination |
| See also |
| Status: in use |
| Tools for this tag |
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Along the overhead wires that power trains, trams and trolleybuses, there are localized components for operation, maintenance and safety. contact_line=* should only be used on nodes or short ways, unlike tags such as frequency=* and voltage=* which apply to longer sections of the overhead wire. Features are placed on/near ways or are ways with electrified=contact_line or trolley_wire=*.
| Tag | Comment | Details |
|---|---|---|
| contact_line=section_break | Where electrical separation usually happens.
Vehicles may briefly connect adjacent sections. |
Wikipedia |
| contact_line=phase_break | Where electrical separation always happens.
Transition between two unsynchronized alternating current sources. |
Wikipedia |
| contact_line=system_change | Where electrical separation always happens.
Transition within/between different AC or DC (national) railway electrification systems. |
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| contact_line=supply | Where electricity may be supplied. | |
| contact_line=earthing_switch | Where a fixed installation for earthing is switched for safety during maintenance. | IEC 62128 |
| contact_line=junction | Where at least two different systems cross/merge at a junction. | Wikipedia |
| contact_line=tensioner | Where automatic/constant tensioning happens. | Wikipedia |
| contact_line=bond | Where two wires have been bonded/spliced together. |