KTM Class 83
Multiple-unit train in Malaysia
From Wikipedia, the free encyclopedia
The Class 83 is a type of electric multiple unit operated by Keretapi Tanah Melayu on its KTM Komuter services. 22 sets were built by Hyundai Precision and Marubeni of South Korea and Japan respectively, in 3-car formations.[3]
| Class 83 | |
|---|---|
A Class 83 EMU Komuter train. | |
| In service | 1996–present |
| Manufacturers | Hyundai Precision and Marubeni |
| Refurbished | Woojin Industrial Systems (2018–)[1] |
| Number built | 66 cars (22 sets) |
| Number scrapped | 24 cars (8 sets) |
| Formation | 3 per trainset |
| Capacity | 406 (216 seats) |
| Operator | Keretapi Tanah Melayu |
| Depots |
|
| Lines served |
|
| Specifications | |
| Car body construction | Stainless steel |
| Train length | 68.4 m (224 ft 5 in) |
| Car length |
|
| Width | 2.75 m (9 ft 0 in) |
| Height | 3,855 mm (12 ft 7.8 in) |
| Floor height | 1.1 m (3 ft 7 in) |
| Doors | 3 double-leaf pneumatic sliding doors per side |
| Maximum speed |
|
| Weight | 123 t (121 long tons; 136 short tons) |
| Traction system | Mitsubishi Electric GTO–VVVF (Original) Woojin IGBT-VVVF (Repaired) |
| Traction motors | 8 × Mitsubishi Electric MB-5069-A 150 kW (200 hp) 3-phase AC induction motor[2] |
| Power output | 1,200 kW (1,600 hp) |
| Electric system | 25 kV 50 Hz AC overhead catenary |
| Current collection | Brecknell Willis pantograph |
| UIC classification | Bo′Bo′+2′2′+Bo′Bo′ |
| Braking system | single-pipe regenerative braking system |
| Track gauge | 1,000 mm (3 ft 3+3⁄8 in) metre gauge |
The KTM class 83 3-car formation consists of two motor cabs at either end of the set and a single trailer car in between. The trailer car in between is equipped with a Brecknell Willis pantograph for electric pick up. Narrow gangways integrate the 3-car sets. Each car features 3 double-leaf pneumatic sliding doors at either side, and these make the KTM class 83 have the highest density of doors per rail-car in Malaysia.
Over the years, the KTM class 83 has been overhauled a number of times and its interior refurbished. However, its interior layout, consisting of longitudinal seating, has remained the same throughout its service life. Four sets of the Class 83 have been refurbished for the KTM Skypark Link. The colour was also changed from blue and yellow, to orange and grey.
With the withdrawal of the Adtranz/Walkers EMU, which served the Ampang and Sri Petaling lines, the KTM Class 83 is now the second oldest still-functioning electric multiple unit in Malaysia after the KTM Class 81.
Design
The Class 83 was designed with a streamlined sloped head, with large front windows and two high beam lamps concentrated at the center top part of the cavity, and two standard headlights at either bottom sides (later changed to LED lights in 2016). An AAR coupling system is used, and this is compatible with all of KTMB's modern rolling stock. Route direction is indicated on the top-right front of the train within a confined fluorescent lighted box using a lightly transparent plastic, built integrated with the window shell (later replaced with LED destination indicators in 2010). The driver's cab features a dedicated access to the outside, which is atop the door access to the passenger area. The Class 83 cab head is designed to be bottom-heavy, with the bulk of the power transformers located beneath the coach. With full use of the top for passenger use, power traction motors are contained within the bogie itself. In terms of safety, the front outer frame is made of heavy, carbonized steel, which is capable of sustaining high impact, as with the KTM Class 82.
Unlike its successor, the Class 92,[4] the Class 83 trains (as with its sister classes) are endowed with multi-layered tempered glass, which is of a higher degree of impact resistance.
The Class 83 had a top speed of 140 km/h (87 mph), at the time of launch. This was similar to the top speed of the other classes, but significantly faster than the rail buses which were in use at the time. During normal operation, 120 km/h (75 mph) was the typical top speed with the average speed being around 45 km/h (28 mph). Compared to the other classes, the class 83 was found to have the best acceleration among the 8x classes, and this is due to the Mitsubishi regenerative braking system being used, which gave efficient energy conservation during braking and reasonable acceleration during runs.
Formations
Set Designation Car Number Status Notes Car 1 Car 2 Car 3 EMU 19 C8301 T8302 C8302 In Service EMU 20 C8303 T8301 C8304 Scrapped EMU 21 C8305 T8303 C8306 Scrapped EMU 22 C8307 T8304 C8308 In Service EMU 23 C8309 T8305 C8310 In Service EMU 24 C8311 T8306 C8312 In Service EMU 25 C8313 T8307 C8314 In Service EMU 26 C8315 T8308 C8316 In Service EMU 27 C8317 T8309 C8318 Scrapped EMU 28 C8319 T8310 C8320 In Service EMU 29 C8321 T8311 C8322 In Service With Kom-Mao-Ter livery. EMU 30 C8323 T8312 C8324 In Service Former Skypark Link train. EMU 31 C8325 T8313 C8326 In Service EMU 32 C8327 T8314 C8328 In Service EMU 33 C8329 T8315 C8330 In Service Former Skypark Link train. EMU 34 C8331 T8316 C8332 Scrapped EMU 35 C8333 T8317 C8334 In Service EMU 36 C8335 T8318 C8336 Scrapped EMU 37 C8337 T8319 C8338 Scrapped EMU 38 C8339 T8320 C8340 Scrapped EMU 39 C8341 T8321 C8342 In Service EMU 40 C8343 T8322 C8344 In Service
Accidents and incidents
On 1 November 2013, an EMU19 derailed near Rawang station while moving through a track switch. No one was hurt when the incident happened. The two rear coaches were separated and towed away using a locomotive while the remaining front coach was removed by cranes.[5]
On 4 September 2020, an EMU29 was side-swiped by KTM Class 93 near the Kuang Komuter station in Selangor. No fatalities were reported.[6]
