HSR-350x

HSR-350x
HSR-350x
	The preserved HSR-350x in Uiwang in 2015 summer.
In service	2002-2008
Manufacturer	Rotem
Family name	KTX
Constructed	1996-2002
Number built	1
Number in service	0
Formation	P+M+3T+M'+P P: power car (traction head); M: motorized trailer (passenger car with one bogie powered); M': motorized trailer intended for the middle of the commercial version (passenger car with one bogie powered); T: trailer (passenger car);
Operators	KRRI
Depots	Osong
Lines served	Gyeongbu High Speed Railway
Specifications
Car body construction	traction heads: steel; passenger cars: aluminum
Train length	145.17 m (476 ft 3+3⁄8 in)
Car length	traction heads: 22.690 m (74 ft 5+1⁄4 in); powered passenger cars: 21.845 m (71 ft 8 in); unpowered passenger cars: 18.700 m (61 ft 4+1⁄4 in)
Width	traction heads: 2.814 m (9 ft 2+3⁄4 in); passenger cars: 2.970 m (9 ft 8+7⁄8 in)
Height	powered cars: 4.055 m (13 ft 3.6 in); unpowered passenger cars: 3.690 m (12 ft 1+1⁄4 in)
Floor height	1,212 mm (3 ft 11+3⁄4 in)
Maximum speed	achieved in tests: 352.4 km/h (219.0 mph); planned in tests/design: 385 km/h (239 mph); planned in service: 350 km/h (217 mph)
Weight	empty: 310 t; (305 long tons; 342 short tons); loaded: 332 t; (327 long tons; 366 short tons); adhesive weight: 204 t; (201 long tons; 225 short tons); axle load: max. 17 t; (16.7 long tons; 18.7 short tons)
Traction system	12 three-phase asynchronous induction motor HRTM-ILE-1100 ; 6 IGCT-based VVVF inverters (1 per bogie)
Power output	12 x 1,100 kW (1,500 hp); total 13,200 kW (17,700 hp)
Auxiliaries	1.4 MW (1,900 hp)+0.7 MW (940 hp), supplying 670 V DC
Electric system(s)	25 kV/60 Hz AC catenary
Current collector(s)	pantograph (single-arm)
UIC classification	Bo'Bo' + Bo'(2)(2)(2)(2)Bo' + Bo'Bo'
Bogies	Jacobs bogies between intermediate cars
Braking system(s)	6 x regenerative, rheostatic; (1 per inverter); 8 x wheel tread; (1 per traction head axle); 4 x wheel disc; (1 per powered passenger car axle); 24 x disc; (3 per unpowered axle); 4 x eddy current; (1 per unpowered bogie);
Safety system(s)	TVM 430 (ATC), ATS
Coupling system	Scharfenberg (emergency)
Multiple working	-
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

HSR-350x, alternatively called G7, KHST or NG-KTX, is a South Korean experimental high-speed train. It was developed and built in a joint project of government research institutes, universities and private companies that started in 1996, which aimed to reduce import dependence in high-speed rail technology. New components developed for the HSR-350x included motors, electronics, and the carbody of passenger cars. Test runs were conducted between 2002 and 2008. The experimental train achieved the South Korean rail speed record of 352.4 km/h (219.0 mph) in 2004. The HSR-350x was the basis for Korail's KTX-II (KTX-Sancheon) commercial high-speed trains.

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