TCDD E1000

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 external assistance. It also uses induction motors for its traction system.^[2][3]

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.^[1]

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.^[4] The Ministry of Transportation, Maritime and Communication projected that Turkey would be manufacturing fully indigenously-made locomotives by 2023.^[5]

During testing, the E1000 prototype conducted a series of successful deceleration and slip prevention system tests in 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.^[3]