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 Willispantograph for electric pick up. Narrow gangways integrate the 3-car sets. Each car features 3 double-leaf pneumatic sliding doors at either side which is the KTM class 83 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, of longitudinal seating, has remained the same throughout it service life. However, four sets of class 83 has been refurbished for the KTM Skypark Link. The colour also changed from blue and yellow to orange and grey colour.
With the withdrawal of Adtranz/Walkers EMU for the Ampang Line, the KTM Class 83 is now the second oldest electric multiple unit in Malaysia after KTM Class 81.
Design
The class 83 was designed with a streamlined sloped head with a large as per the front windows with two high beam lamps concentrated at the center top part of the cavity with 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 which is built integrated with the window shell, later replaced with LED destination indicator's in 2010. The drivers cab features a dedicated access to outside on top of 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, that is capable of sustaining high impact, same as KTM Class 82.
Unlike the latter class 92,[4] the class 83 like its sister classes are endowed with multi-layered tempered glass that is of a higher degree of impact resistance.
The class 83 has 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 railbuses that 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
Car 1
Car 2
Car 3
EMU 19
C8301
T8301
C8302
In Service
EMU 20
C8303
T8302
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
EMU 30
C8323
T8312
C8324
In Service
EMU 31
C8325
T8313
C8326
In Service
EMU 32
C8327
T8314
C8328
In Service
EMU 33
C8329
T8315
C8330
In Service
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, EMU19 derailed near Rawang station while moving through a track switch. No one was hurt in the incident. The two rear coaches were separated and towed away using a locomotive while the remaining front coach removed by use of cranes.[5]
References
Wikimedia Commons has media related to KTM Class 83.