Korail Class 341000

Formation

The Class 341000 cars are arranged in 10-car trains. Details of the car types of each train are listed below:

3410XX (ex-20XX) - Tc (trailer driving car with SIV, air compressor, and battery)
3411XX (ex-22XX) - M (motor car with inverter and controller)
3412XX (ex-23XX) - M' (motor car with pantograph, transformer, inverter, and controller)
3413XX (ex-28XX) - T (trailer car)
3414XX (ex-24XX) - M'
3415XX (ex-25XX) - T' (trailer car with SIV, air compressor, and battery)
3416XX (ex-29XX) - T
3417XX (ex-26XX) - M
3418XX (ex-27XX) - M'
3419XX (ex-21XX) - Tc

Electrical parts

Trains 341-01~341-05, 341-08, 341-18~341-23, 341-25, and 341-26 use IGBT controls with passive cooling through a heat pipe, while all other trains use Toshiba GTO-based VVVF controls with active cooling. The trains are equipped with regenerative braking, reducing energy consumption and simplifying train inspection. The trains feature a more powerful air conditioning system than that on the Class 1000 trains.

Interior design

The Class 341000 trains used an ivory-colored interior with a long sheet prior to their overhauls. All trains now use a white interior. LED display monitors are installed on the top of each car. The end cars have a space for wheelchairs.

Cabin

The Class 341000 trains equipped with TGIS use color displays, and service machines can be automatically controlled in TGIS after a refurbishment of these trains in 2005. Dead section notifiers are also installed.

1st batch

Class 341000 (1st batch) train 341-16 (ex-Class 2030 train 2-45)

The first batch of Class 341000 trains were built from 1993 to 1996. The trains used a livery consisting of red and orange stripes when delivered, but after refurbishment, the trains started using the new livery. Because of the flat front ends, the trains are nicknamed "flat face" (납작이).

The first batch trains are numbered 341-01~341-25; the trains were renumbered from trains 2-30~2-46, 2-49, 2-51~2-54, 2-70~2-72.

Trains 341-01~341-22 were manufactured from 1993 to 1994 by Hanjin Heavy Industries and Hyundai Precision to address the opening of the Gwacheon Line and the Ansan Line (from Seonbawi Station to Ansan Station), and were originally six cars long; additional cars were built in 1995 to expand these trains to ten cars. Meanwhile, trains 341-23~341-25 were manufactured in 1996 by Daewoo Heavy Industries to expand the rolling stock on Line 4, and were built with 10 cars each.

2nd batch

Class 341000 (2nd batch) train 341-28 (ex-Class 2000 train 2-79)

The second batch of Class 341000 trains were built in 1999 by KOROS (Korea Rolling Stock Company) to address the extension of the Ansan Line section of Line 4 from Ansan Station to Oido Station. The cab ends of the driving cars changed completely into a circular front view, which led to the trains being nicknamed "round face" (동글이). The trains used a livery consisting of red and orange stripes when delivered (similar to that of the 1st batch trains), but after refurbishment, the trains started using the new livery.

The second batch trains are numbered 341-26~341-30; the trains were renumbered from trains 2-77~2-81.

Overhaul

The Daegu subway fire compelled Korail to introduce flame-resistant interiors for passenger safety. As a result, all trains were overhauled with fire-retardant interiors from 2003 to 2005.

New livery

Refurbished interior of a second batch train

All trains used an old KNR livery consisting of red and orange stripes. These trains were repainted into the current blue and bluegreen livery from 2003 to 2005. The new livery has a metaphor of Taegeuk, but was criticized as being too primitive-looking. Livery is applied only on front and on the doors.

Electric parts

• 2002: Trains 341-01~341-25 were retrofitted with Comonet broadcasting systems. They have since been removed.
• 2004: All trains' braking systems are refurbished to generate less noise.
• 2004-2005: SIV traction systems were replaced with IGBT traction systems built by Woojin Industrial Systems.
• 2005: Various new components in all trains (public address systems, newer cooling systems, and LED destination signs) are added.

From 2003, some trains had their GTO inverters replaced with IGBT inverters. As of 2018, trains 341-01~341-05, 341-08, 341-18~341-23, 341-25, and 341-26 have received new inverters.

From July 2008 all trains were retrofitted with automatic gangway doors (similar retrofits were also done in Class 311000, Class 321000, and Class 351000 trains). This retrofit included the installation of automatic doors to replace the older doors that were manually pulled open; gangway doors can now be automatically opened by the push of a button. This retrofit process was completed by February 2012.

Some trains are now being retrofitted with LED headlights, following the successful testing of LED headlights on the Korail Class 311000 cars.

Renumbering

In 2011, the Class 341000 trains were renumbered from the 2000-series to the 341000-series as a part of a new numbering scheme by Korail (the leading "3" indicating a metro car). Renumbering was finished by mid-2011.