Line 4
Wide-Width Chopper Control Train
Before reading this section, it is recommended to read the "Brief Intro to Numbering" section on the Trains page.
You can read more about the origins of these trains in the Line 3 section.
Of the 67 trains intended to be built for Lines 3 and 4, 35 trains would run on Line 4. They would all be six cars long, totaling 210 cars in total.
In June 1982, with the diversion of resources following the increase in ridership on Line 2, eight of these planned trains were taken out. They would become part of Line 2 trains 2-61~2-75.
The 27 remaining trains were numbered 4-01/02~4-53/54. The car numbering was identical to the trains on Line 3:
40XX-Tc (Unpowered leading car with cab)
42XX-M (Main controller, main motor, air compressor, battery, towing motor)
45XX-M' (Pantograph, transformer, main rectifier, auxiliary power supply, towing motor)
42YY-M
45YY-M'
40YY-Tc
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In 1989, a second batch of trains were built for this line. It consisted of 14 trains, numbered 4-55/56~4-81/82. All were six cars long. There were now 41 trains of this type operating on Line 4.
All trains were extended to ten cars in 1990 and 1993. The car numbering changed to a more linear progression:
40XX-Tc
41XX-M
42XX-M'
43XX-M
44XX-M'
45XX-T1 (Unpowered car)
46XX-T (Unpowered car)
47XX-M
48XX-M'
49XX-Tc
Under this numbering system, the trains were numbered 4-01~4-41.
These trains were transferred to Lines 3 and 2 starting in 1993, with the introduction of new rolling stock on Line 4. Trains 4-16~4-27 were transferred in 1993. 4-16~4-23 were split up and combined with Line 3 cars to from new trains 3-16~3-33 and 3-36~3-40. Trains 4-24~4-27 were renumbered into 3-41~3-44.
From 1993 to 1994, trains 4-28~4-35 were transferred to Line 2, becoming trains 2-85~2-92. In 1994, trains 4-01~4-15 were renumbered to 3-01~3-15.
All the Line 4 trains were completely transferred by 1995, when trains 4-36~4-41 were renumbered to 3-34, 3-35, and 3-45~3-48.
Seoul Metro 4000-series
The Seoul Metro 4000-series trains were introduced in two batches from 1993 to 1994. 47 trains were built, numbered 4-01~4-26 and 4-51~4-71.
The design is identical to the second generation Seoul Metro 1000-series and Korail 3000-series. These trains were the first to be built under this design, and would be the base design the other two types would be built on. The design itself looks similar to the Seibu 6000 series trains in Japan, although the only real similarities are the front ends. These trains came powered by VVVF-GTO inverters, and came standard with paper roll destination signs.
The car numbering was as follows:
40XX-Tc (Leading car with cab, SIV, air compressor, battery)
41XX-M (Pantograph, inverter and controller)
42XX-M
43XX-T (Unpowered car)
44XX-M
45XX-T1 (Unpowered car with SIV, air compressor, battery)
46XX-T
47XX-M
48XX-M
49XX-Tc
The first batch of consisted of trains 4-01~4-09 and 4-51~4-63, built in 1993 by Hyundai Precision. Due to Line 4's unique route, trains 4-01~4-09 have DC pantographs and can only operate between Danggogae and Sadang. Trains 4-51~4-63 have AC pantographs and can operate on the entire line.
These trains use Mitsubishi VVVF-GTO propulsion systems.
Second batch train 4-71.
By 분당선M - 자작, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=22746631
The second batch of trains consisted of 4-10~4-26 and 4-64~4-71, built in 1994 by Daewoo Heavy Industries. Trains 4-10~4-26 have DC pantographs, and 4-64~4-71 have AC pantographs.
These trains use GEC-Alstom VVVF-GTO propulsion systems.
There are very subtle differences between the two batches. The interior LED signs are slightly different (Hyundai, Daewoo). Hyundai trains have a thinner exterior window thickness than the Daewoo trains. The height of the driving controls and the interfaces are different. Daewoo trains have better acceleration performance, but braking is rather rough.
Trains 4-56~4-68 were originally six cars long as built because the Ansan Line stations had not been extended yet to accommodate ten cars. After all stations were upgraded, these trains were extended to ten cars in 1994 by Daewoo Heavy Industries.
The six-car numbering was as follows:
40XX-Tc
41XX-M
42XX-M
43XX-T
44XX-M
45XX-T1
49XX-Tc
Trains 4-51, 4-52, and 4-56~4-63 temporarily ran on Line 3 when they were introduced, but returned to Line 4 with the opening of the Gwacheon Line in 1994.
Trains 4-01~4-20, 4-22, 4-23, 4-51~4-54, 4-56, 4-57, 4-61, 4-64 and 4-66 were retrofitted with LED destination displays. Interestingly, the change has since been reverted for trains 4-52, 4-54, 4-56, 4-57, 4-61, and 4-64.
Trains 4-03, 4-04, and 4-51~4-63 have been retrofitted with LED headlights.
Trains 4-51, 4-66, 4-70, and 4-71 were retrofitted with VVVF-IGBT systems. Trains 4-66, 4-70, and 4-71 use a Toshiba-based Woojin unit, while 4-51 uses a Dawonsys unit.
It is planned for two first batch AC-pantograph trains to be retrofitted with IGBT inverters in 2020. Which two is not known at the moment.
As these trains have been in service for over 25 years now, they are showing signs of their age. Train 4-65 was retired in 2017 due to frequent breakdowns. Train 4-16 was retired in 2019 because of structual integrity and electronics issues. Train 4-69 was retired in 2020 due to damage to leading car 4069.
With the retirement of these three trains, some of their cars are currently being used by other running trains:
-Train 4-14 uses car 4816 (replacing 4814)
-Train 4-66 uses car 4265 (replacing 4766)
-Train 4-67 uses cars 4865 and 4465 (replacing 4267 and 4467, respectively)
-Train 4-68 uses cars 4169 and 4269 (replacing 4168 and 4268, respectively)
Train 4-05 was temporarily suspended in mid-2018 due to mechanical issues. After being repaired and spending some time as a reserve vehicle, it was upgraded to normal service in the summer of 2019. The emergency door of car 4905 has been replaced with one from train 4-65.
Train 4-61 was damaged in a collision with Class 341000 train 341x23 at Sanggye Station on June 11, 2020, causing five minor injuries. The fate of the train is currently unknown.
On July 26, 2020, the power module in train 4-55 caused a power overload in a nearby substation, temporarily cutting off power to the Ansan and Suin Lines. The train is temporarily out of service for inspection.
The rest of the trains remain in service. All trains are stored at the Chang-dong Depot.
Second Generation
The second generation of trains have been built since 2019 by Hyundai Rotem. 5 trains are expected to be delivered, numbered 4-81~4-85.
These trains will follow the design of the fourth generation 2000-series trains.
Third Generation
A third generation will be built from 2022 to 2024 by Dawonsys. 21 trains will be built, replacing the first generation AC trains. They will be numbered 4-51~4-71.
The design will the same as the third generation 3000-series trains, except with a single light blue stripe.
Korail Class 341000 (Formerly 2030)
First Generation
The Korail Class 341000 trains were introduced as Class 2030 trains from 1993 to 1996. The reason why it was named the 2030 series was because there was already was a Korail Class 2000 at the time, a class of diesel locomotives.
The design for the first generation is the "납작이" (flat-face) design shared with the first generation Class 311000 and 351000 trains. These trains came with paper roll destination signs, and a livery of orange and red stripes.
These trains use Toshiba VVVF-GTO propulsion systems.
Train 2x71 in its original livery.
Interestingly enough, this livery, along with the original red and blue livery of the Korail 3000-series trains on Line 3, meant that there was a time where the blue line (Line 4) had exclusively orange trains and the orange line (Line 3) had blue trains. One would think that the two would've been swapped. The exact reason why the trains were painted like this initially is unknown.
From https://m.blog.naver.com/PostView.nhn?blogId=lovtrout&logNo=90116544532&proxyReferer=https%3A%2F%2Fwww.google.com%2F
The first generation was built by Hanjin Heavy Industries, Daewoo Heavy Industries, and Hyundai Precision. 25 trains were built, numbered 2-30~2-46, 2-49, 2-51~2-54 and 2-70~2-72. Trains 2-30~2-46, 2-49, and 2-51~2-54 were originally six cars long; they were extended to ten cars in 1995. Trains 2-70~2-72 were ten cars long as-built.
Car numbering at the time was as follows:
Six cars:
20XX-Tc (Leading car with cab, SIV, air compressor, battery)
22XX-M (Inverter, controller and converter)
23XX-M' (Pantograph, transformer, inverter, controller)
28XX-T (Unpowered car)
25XX-M'
21XX-Tc
Ten cars:
20XX-Tc
22XX-M
23XX-M'
28XX-T
25XX-M'
24XX-T' (Unpowered car with SIV, air compressor, battery)
29XX-T
26XX-M
27XX-M'
21XX-Tc
Train 2x39 in the current livery.
By Subway06 - Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=6377343
In 2005, the trains received their fire-resistant interiors, along with the current blue and light blue livery. They were also retrofitted with LED destination displays.
In 2011, the trains were renumbered to 341x01~341x25. The car numbering was also updated, with the equipment staying the same per car:
3410XX-Tc
3412XX-M
3413XX-M'
3414XX-T
3415XX-M'
3416XX-T'
3417XX-M
3418XX-M'
3419XX-Tc
Train 341x16.
By Mtattrain - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=26722893
Many trains have been retrofitted with Toshiba VVVF-IGBT units. So far, trains 341x01, 341x03, 341x05, 341x08, 341x14, 341x18~341x23, and 341x25 have been retrofitted. Train 341x04 was retrofitted, but the change has since been reverted.
As the trains are showing their age, many carry cars from each other or from first generation Class 311000 trains. Train 341x02 was retired altogether in 2018, and many of its cars were cannibalized for parts and for use on other trains.
All cars except the leading cars on train 341x04 are from former train 311x01. The cars formerly coupled to train 341x04 are now used on trains 341x08, 341x10, 341x14, and 341x19. Trains 341x07, 341x12, and 341x13 use cars from former train 311x02.
All trains have received LED headlights. Some cars only feature LED headlights on one side.
Train 341x23 collided with Seoul Metro 4000-series train 4-61 at Sanggye Station on June 11, 2020. Two cars derailed and were damaged; whether it will be repaired or retired is unknown.
Train 341x01 is planned to be retired and preserved in 2022. Train 341x03 will be retired in 2023.
All trains are stored at the Siheung Depot.
Second Generation
The second generation was built in 1999 by KOROS (Korea Rolling Stock Company). Five ten-car trains were built, initially numbered 2x77~2x81.
These trains were the first to feature the "동글이" (round face) design that would eventually be shared with the second generation Class 311000 and 351000 trains. The only difference between the three classes is that the Class 341000s still have square door windows and two-piece side windows. The rectangular door windows and the one-piece side window would be added later to the other two classes as improvements.
All trains were initially delivered in the orange and red livery, with paper roll destination signs. They followed the same initial ten-car numbering as the first generation.
Train 2x80 in its original paint scheme.
From https://namu.wiki/w/%ED%8C%8C%EC%9D%BC:attachment/341000_2nd.png
These trains received fire-resistant interiors, the current livery and LED displays in 2005.
In 2011, these trains were renumbered to 341x26~341x30. The updated ten-car numbering listed above was adopted.
Train 341x26 have been retrofitted with a Toshiba VVVF-IGBT unit. Some LED displays in the train have also been changed to white-colored displays.
These trains remain in service today. They are stored at Siheung.
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Train 341x29. (Formerly 2x80)
By Mtattrain - 자작, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=40954222
Third Generation
The third generation of trains are being built since 2019 by Hyundai Rotem. Currently, seven trains have been built, numbered 341x31~341x37. Another batch of 18 trains, numbered 341x38~341x55, are expected to be built and delivered before 2023.
These trains follow the "주둥이" (snout nose) design shared with the fifth generation Class 311000 and second generation Class 319000 trains. The specifications between these two trains are identical.
Trains 341x31~341x35 are painted in Line 1 colors and will temporarily run on Line 1 until 2022. Although it was not originally scheduled to, trains 341x36 and 341x37 will also run on Line 1 until at least 2021. This move is presumably to counteract the accelerated retirement of the Korail Class 1000 trains. Train 341x35 will enter service on Line 4 as originally scheduled.
Trains 341x31~341x34 and 341x36 have entered service on Line 1. The rest are undergoing commissioning, due to enter service soon.
Train 341x31, painted in Line 1 colors.
From https://gramho.com/explore-hashtag/341031%ED%8E%B8%EC%84%B1
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