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2. List of railway electrification systems - Wikipedia

   en.wikipedia.org/wiki/List_of_railway...

   Overhead wires in depots; all trains are equipped with pantographs Kunming: Kunming Metro: Line 4 only Qingdao: Qingdao Metro: Shanghai: Shanghai Metro: Lines 16 and 17 only. Overhead wires in depot of Line 16, all trains on Line 16 have pantographs for depot use. Shenzhen: Shenzhen Metro: Lines 3 and 6 only. Overhead wires in depot of Line 6 ...

3. Optical attached cable - Wikipedia

   en.wikipedia.org/wiki/Optical_attached_cable

   Three different types of fibre-optic cable have been developed for installation on overhead power utility lines: Optical Ground Wire (OPGW), All-Dielectric Self-Supporting (ADSS) cable and Optical Attached Cable (OPAC). Each type has a different set of properties and is therefore better suited to a particular set of circumstances.

4. Overhead crane - Wikipedia

   en.wikipedia.org/wiki/Overhead_crane

   An overhead crane, featuring runways, bridge, and hoist in a traditional industrial environment. Overhead crane at the Skanska precast concrete factory in Hjärup, Sweden. Gantry-style overhead cranes of the Hainaut quarry in Soignies, Belgium. An overhead crane, commonly called a bridge crane, is a type of crane found in

5. Crane Manufacturers Association of America - Wikipedia

   en.wikipedia.org/wiki/Crane_Manufacturers...

   Specification No. 70 Multiple Girder Cranes; Specification No. 74 Single Girder Cranes; Specification No. 78 Professional Services - This sets the standards for those who inspect, repair, design, and otherwise manage the supply and use of overhead cranes. Specification No. 79 Crane Operators Manual [3] Overhead Crane Inspection and Maintenance ...

6. Overhead line - Wikipedia

   en.wikipedia.org/wiki/Overhead_line

   The generic term used by the International Union of Railways for the technology is overhead line. [1] It is known variously as overhead catenary, overhead contact line (OCL), overhead contact system (OCS), overhead equipment (OHE), overhead line equipment (OLE or OHLE), overhead lines (OHL), overhead wiring (OHW), traction wire, and trolley wire.

7. Overhead power line - Wikipedia

   en.wikipedia.org/wiki/Overhead_power_line

   Overhead insulated cables are rarely used, usually for short distances (less than a kilometer). Insulated cables can be directly fastened to structures without insulating supports. An overhead line with bare conductors insulated by air is typically less costly than a cable with insulated conductors. A more common approach is "covered" line wire.