TCDD E1000
{{Infobox locomotive
| name = TCDD E1000
| image = File:E1000lokomotif.jpg
| powertype = Electric
| builder = TÜLOMSAŞ
TÜBİTAK MAM
| builddate = 2015
| totalproduction = 1
| aarwheels = B-B
| uicclass = Bo'Bo'
| Britishclass = Bo-Bo
| gauge = {{track gauge|sg}}
| length = {{convert|13250|mm|ftin|abbr=on}}
| axleload = {{convert|18|t|abbr=on}}
| locoweight = {{convert|72|t|abbr=on}}
| electricsystem = {{25 kV 50 Hz}}
| collectionmethod = Pantograph
| locobrakes = Knorr
| maxspeed = {{convert|80|km/h|mph|abbr=on}}
| poweroutput = {{convert|1000|kW|hp|abbr=on}}
| t/e starting = {{convert|230|kN|lbf|abbr=on}}
| operator = Turkish State Railways
}}
The TCDD E1000 is an electric locomotive in use with Тurkish State Railways. A single prototype was built in 2015 by TÜLOMSAŞ and TÜBİTAK MAM. The main feature of the locomotive is its regenerative braking system, allowing it to make a halt in the shortest possible time without {{Clarify span|external assistance|date=October 2024}}. It also uses induction motors for its traction system.{{Cite news |date=2 March 2016 |title=Domestic electric locomotive successfully passed the E1000 tests |url=https://www.raillynews.com/2016/03/domestic-electric-locomotive-e1000-tests-successfully/ |access-date=27 October 2024 |work=Railly News}}
The locomotive have a power rating of 1000 kW, and can reach speeds up to 80 km/h. The locomotive weighed 72 tons, and measured at 13,250 mm in length.
Background
{{Expand section|date=October 2024}}
The DE11000 diesel shunters, which were in need of modernisation since the mid-1990s, were plagued by the increasing difficulty of supplying spare parts abroad. For this reason, in 2008, TULOMSAS began development of an electric shunting locomotive that could replace the DE110000.{{cite news |last= |first= |date=4 April 2021 |title=Overseas supply shortage has made Turkey a main transportation hub |url=https://bazaartimes.com/overseas-supply-shortage-has-made-turkey-a-main-transportation-hub/ |work=Bazaar Times |location= |access-date=28 October 2024}} The Ministry of Transportation, Maritime and Communication projected that Turkey would be manufacturing fully indigenously-made locomotives by 2023.{{cite news |last= |first= |date=9 October 2015 |title=National electric train to hit the rails |url=https://www.dailysabah.com/business/2015/10/09/national-electric-train-to-hit-the-rails |work=Daily Sabah |location= |access-date=1 November 2024}}{{Needs update|date=November 2024}}
Trials
{{Expand section|date=November 2024}}
During testing, the E1000 prototype conducted a series of successful deceleration and slip prevention system tests in {{Clarify span|date=November 2024|text=stop-starts}}, and managed to reach 65 km/h while hauling a 1,000 ton train on a level piece of track. In November 2015, the locomotive passed tests in regenerative braking on a 2.8% grade in Bilecik with a 520 ton train.{{cite news |last= |first= |date=31 March 2016 |title=The Domestic Electric Locomotive Passed the Tests |url=https://www.destekpatent.com/en/1363-the-domestic-electric-locomotive-passed-the-tests/ |work=Destek Patent |location= |access-date=1 November 2024}}