| 词条 | South African Class 9E, Series 2 | |||
| 释义 |
| name = South African Class 9E, Series 2 | image = SAR Class 9E Series 2 E9030.JPG | alt = | caption = E9030 at Saldanha, Western Cape in July 2009 | hatnote = | powertype = Electric | designer = General Electric Company | builder = Union Carriage & Wagon | ordernumber = | serialnumber = 5595-5600 | buildmodel = GEC 9E | builddate = 1982-1983 | totalproduction = 6 | rebuilder = | rebuilddate = | numberrebuilt = | aarwheels = C-C | uicclass = Co'Co' | Britishclass = Co-Co | gauge = {{Track gauge|Cape|allk=on}} | bogies = | leadingdiameter = | wheeldiameter = {{convert|1220|mm|in|1|abbr=on}} | trailingdiameter = | minimumcurve = | wheelbase = {{convert|16290|mm|ftin|1|abbr=on}} | bogie = {{convert|3940|mm|ftin|1|abbr=on}} | pivotcentres = {{convert|12700|mm|ftin|1|abbr=on}} | pantoshoecentres = | wheelspacing = | length = | over couplers = {{convert|21132|mm|ftin|1|abbr=on}} | over bufferbeams = {{convert|20120|mm|ftin|1|abbr=on}} | body = | width = {{convert|2900|mm|ftin|1|abbr=on}} | height = | pantodown = {{convert|3900|mm|ftin|1|abbr=on}} | bodyonly = {{convert|3900|mm|ftin|1|abbr=on}} | frametype = | axleload = {{convert|28000|kg|lb|abbr=on}} max | leadingbogie/pony= | weightondrivers = {{convert|166300|kg|lb|abbr=on}} | trail bogie/pony = | locoweight = {{convert|166300|kg|lb|abbr=on}} | sandcap = | electricsystem = 50 kV AC 50 Hz | collectionmethod = Pantograph from catenary | alternator = | generator = | tractionmotors = Six G415AZ | t/m amps 1 hr = {{convert|690|kW|hp|abbr=on}} | t/m amps cont = {{convert|640|kW|hp|abbr=on}} | headendpower = | transmission = | gear ratio = 18:83 | multipleworking = | trainheating = | locobrakes = Air & Rheostatic | trainbrakes = Vacuum & Air Wabco "Vaporid" air dryer | reservoircap = | compressorcap = | exhaustercap = | safety = | coupling = AAR knuckle | maxspeed = {{convert|90|km/h|mph|abbr=on}} | poweroutput = | poweroutput start= | poweroutput 1 hr = {{convert|4140|kW|hp|abbr=on}} | poweroutput cont = {{convert|3840|kW|hp|abbr=on}} | tractiveeffort = | t/e starting = {{convert|570|kN|lbf|abbr=on}} | t/e 1 hr = {{convert|483|kN|lbf|abbr=on}} | t/e continuous = {{convert|388|kN|lbf|abbr=on}} | factorofadhesion = | f/adh starting = | f/adh 1 hr = | f/adh continuous = | locobrakeforce = | operator = South African Railways Spoornet Transnet Freight Rail | operatorclass = Class 9E | numinclass = 6 | fleetnumbers = E9026-E9031 | officialname = | nicknames = | axleloadclass = | locale = Sishen-Saldanha Orex line | deliverydate = 1982-1983 | firstrundate = 1982 | lastrundate = | withdrawndate = | preservedunits = | restoredate = | scrapdate = | currentowner = | disposition = | notes = }} The South African Railways Class 9E, Series 2 of 1982 is an electric locomotive. In 1982 and 1983, the South African Railways expanded its existing Class 9E fleet by placing six new Class 9E, Series 2 General Electric Company {{nowrap|50 kV AC}} electric locomotives with a Co-Co wheel arrangement in service on the Sishen-Saldanha iron ore line.[1] ManufacturerThe 50 kV AC Class 9E, Series 2 electric locomotive was designed for the South African Railways (SAR) by the General Electric Company (GEC) and was built by Union Carriage & Wagon (UCW) in Nigel, Transvaal.[2] GEC works numbers were allocated to Class 9E locomotives. UCW delivered six locomotives in 1982 and 1983, numbered in the range from E9026 to E9031.[1] CharacteristicsThe locomotive has a single full width air conditioned cab. At the rear end, the body work is lower to provide clearance for the 50 kV AC electrical equipment which is mounted on the roof. This consists of a single pantograph, a potential divider, a vacuum circuit breaker, a surge diverter and the main transformer’s high voltage terminal. The electrical control system is solid state, using thyristors.[3] Since huge voltage drops are often encountered between electric sub-stations, the locomotive was designed to be able to operate on a supply varying between 55 and 25 kV AC. The battery boxes and the main air reservoirs are mounted between the bogies underneath the frame, where a compartment also houses a small motor scooter for use by the crew for lineside inspections of the train, which can be up to nearly {{convert|4|km|mi|1|abbr=off}} long.[3] Series 2 locomotives were delivered with five braking systems; air brakes for the locomotive, train air braking, train vacuum braking, a handbrake and dynamic rheostatic braking which can dissipate {{convert|4200|kW|hp|abbr=off}}. The Series 1 locomotives were delivered without a vacuum brake system.[3] By 2007, the entire fleet of both series of Class 9E electric locomotives were upgraded with Alstom's Agate train control and communication technology. The pantographs on most of these locomotives were also replaced by the single arm type.[4] The Series 1 and Series 2 Class 9Es can be visually distinguished from each other by their bogies, which were redesigned for the Series 2 locomotives.[1] ServiceClass 9E locomotives are used on the {{convert|861|km|mi|adj=mid|long|0|abbr=off}} Sishen-Saldanha iron ore line to haul export ore from the open cast iron mines at Sishen in the Northern Cape to the harbour at Saldanha in the Western Cape. Most of the route is across the hot and dry Northern Cape, but the last {{convert|75|km|mi|abbr=off}} to Saldanha runs parallel to the Atlantic coastline and is subjected to the fog and corrosive sea air of the West Coast.[3][5] LiveriesThe whole series was delivered in the SAR red oxide livery with signal red cowcatchers, yellow whiskers and with the number plates on the sides mounted on three-stripe yellow wings. In the late 1990s they were all repainted in the Spoornet blue livery with either solid or outline numbers on the sides.[5][6] IllustrationReferences{{commons category|South African Class 9E Series 2}}1. ^1 2 South African Railways Index and Diagrams Electric and Diesel Locomotives, 610mm and 1065mm Gauges, Ref LXD 14/1/100/20, 28 January 1975, as amended {{Locomotives of South Africa}}{{General Electric Company plc}}2. ^{{cite web|title=UCW - Electric locomotives|url=http://www.ucw.co.za/pdf/electric_loco.pdf |publisher=The UCW Partnership|accessdate=30 September 2010 |archiveurl = https://web.archive.org/web/20071012023401/http://www.ucw.co.za/pdf/electric_loco.pdf |archivedate = 12 October 2007}} 3. ^1 2 3 {{Paxton-Bourne|pages=129-131}} 4. ^Information supplied by Transnet Freight Rail staff 5. ^1 {{Middleton-SA Loco Guide|pages=50, 62}} 6. ^[https://sites.google.com/site/soulorailway/home/system-7-1/south-eastwards-as-far-as-volksrust-2nd-section-wattles-to-union-junction-by-les-pivnic Soul of A Railway, System 7, Western Transvaal, based in Johannesburg, Part 9. South-Eastwards as far as Volksrust (2nd part) by Les Pivnic. Caption 4.] (Accessed on 11 April 2017) 7 : Cape gauge railway locomotives|Co-Co locomotives|Electric locomotives of South Africa|GEC locomotives|Railway locomotives introduced in 1982|Union Carriage & Wagon locomotives|50 kV AC locomotives |
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