KTX-I

KTX-I (한국고속철도)
KTX-I (한국고속철도)
	KTX-I trainset 038
	Refurbished standard class interior
Manufacturer	Alstom (trainsets 01–12); Rotem (trainsets 13–46);
Family name	TGV
Constructed	1997–2000 (trainsets 01–12); 2002–2003 (trainsets 13–46);
Entered service	1 April 2004
Number built	920 vehicles (46 sets)
Number in service	920 vehicles (46 sets)
Formation	20 cars per trainset; (PC+MT+16IT+MT+PC); PC: power car (traction head); MT: motorized trailer (passenger car with one powered bogie); IT: intermediate trailer (passenger car);
Fleet numbers	001–046
Capacity	955 seated + 30 jump seats 92 First Class (2+1); 863 Standard Class (2+2);
Operators	Korail
Depots	Goyang
Lines served	Gyeongbu HSR; Honam HSR; Gyeongbu Line; Honam Line; Gyeongjeon Line; Jeolla Line; Donghae Line; AREX (until 2018);
Specifications
Car body construction	Steel
Train length	388.1 m (1,273 ft 3+1⁄2 in)
Car length	Traction heads:; 22.607 m (74 ft 2+1⁄16 in); Powered passenger cars:; 21.845 m (71 ft 8+1⁄16 in); Unpowered passenger cars:; 18.7 m (61 ft 4+1⁄4 in);
Width	Traction heads:; 2.814 m (9 ft 2+13⁄16 in); Passenger cars:; 2.904 m (9 ft 6+5⁄16 in);
Height	Traction heads:; 4.062 m (13 ft 3+15⁄16 in); Powered passenger cars:; 4.1 m (13 ft 5+7⁄16 in); Unpowered passenger cars:; 3.484 m (11 ft 5+3⁄16 in);
Doors	Height: 1,835 mm (6 ft 1⁄4 in); Width: 700 mm (27+9⁄16 in);
Maximum speed	Service:; 305 km/h (190 mph); (orig. 300 km/h (186 mph)); Design:; 330 km/h (210 mph);
Weight	Empty: 701 t (690 long tons; 773 short tons); Max load: 771 t (759 long tons; 850 short tons);
Axle load	17 t (17 long tons; 19 short tons)
Traction system	12 x SM47 three-phase self-commuting synchronous motors; thyristor inverters
Power output	12 x 1,130 kW (1,520 hp) ; total 13.56 MW (18,180 hp)
Tractive effort	385 kN (87,000 lbf)
Acceleration	0.47 m/s2 (1.7 km/(h⋅s)) up to 60 km/h (37 mph); from 0 to 300 km/h (0 to 186 mph) in 365 seconds and 20 km (12 mi);
Deceleration	1.04 m/s2 (3.4 ft/s2); from 300 to 0 km/h (186 to 0 mph) in 74 seconds and 3.3 km (2.1 mi);
Auxiliaries	GTO
Electric system(s)	catenary 25 kV AC, 60 Hz
Current collector(s)	pantograph; (type: single-arm,; Faiveley GPU-25K)
UIC classification	Bo'Bo' + Bo'(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)Bo' + Bo'Bo'
Bogies	Jacobs bogies between intermediate cars
Braking system(s)	regenerative, rheostatic; (power system); wheel tread; (powered axles); disc; (unpowered axles);
Safety system(s)	ATS, ATP (Bombardier), TVM-430
Coupling system	Scharfenberg (emergency)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The KTX-I, also known as the TGV-K or Korail Class 100000, is a South Korean high speed train class based on the French TGV Réseau. The 20-car formation of the trainsets without a restaurant car is optimized for high capacity. The 46 trainsets were built partly in France and partly in South Korea in the framework of a technology transfer agreement, which was the basis for further domestic high-speed train development in South Korea.

Korail uses the name of KTX as the official name of KTX-I. The name of KTX-I is derived to distinguish KTX-Sancheon, which was formerly called as KTX-II, but it is not the official name for this rolling stock.

The high-speed rail service of South Korea's national rail carrier Korail, Korea Train Express (KTX), started with the KTX-I. The operational reliability of the trains was improved over time with better maintenance and minor modifications. As of 2011, the KTX-I remains Korail's main workhorse in KTX service with a maximum scheduled speed of 305 km/h (190 mph).