Sri Lanka Railways S12 | |
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![]() Class S12 No. 925 | |
Stock type | Diesel-Electric Multiple Unit |
Manufacturer | CSR |
Built at | Sifang, China |
Family name | D 22 (KV Set) |
Constructed | 2012 |
Number built | 22 train sets |
Number in service | 22 |
Successor | Sri Lanka Railways S14 |
Formation | MCG + 3xTC + 3xSC + 1xFC + 1xRC + MCG (Main Line Set), MCG + 5xTC + DDCG (KV Set) |
Capacity | 44 (AFC) + 66*3 (TC) + 52 (TCBU) + 44*3 (SC) = 426 |
Operators | Sri Lanka Railways |
Specifications | |
Car body construction | Stainless steel |
Car length | 50 ft (15.24 m) |
Maximum speed | 100 km/h (62 mph) (De-rated 80 km/h or 50 mph) |
Prime mover(s) | MTU 12V4000R41 Two engines per unit in Main Line Set |
Engine type | V12 |
Power output | 1,950 hp (1,450 kW) |
Transmission | Diesel-electric |
Braking system(s) | Air (Knorr-Bremse), Dynamic |
Coupling system | Automatic (dual) |
Track gauge | 5 ft 6 in (1,676 mm) |
Sri Lanka Railways S12 is a class of Diesel-electric multiple unit (DEMU) built for Sri Lanka Railways by China's CSR Corporation. The first batch arrived in Sri Lanka in August 2012. They were built to replace locomotive-hauled passenger trains. Seven of the S12 DMUs were ordered to strengthen long-distance travel on the Main line from Colombo to Badulla. Four of S12s were built to serve the Kelani Valley Line. The remaining set was designed as a luxury train. [1]
The S12 DEMUs were meant to improve services on the Main Line and the Kelani Valley Line. The steep slopes on the up-country portion of the Main Line is difficult to operate. Prior to the S12, only a few classes of locomotives were capable of operating this line. As DEMUs started to replace locomotive-operated trains on other lines, the up-country Main Line could not be operated by DEMUs. The S12 is the first DEMU to handle these conditions.
The locomotives were purchased under a USD 101 million credit line agreement with China. The loan was to be settled within 15 years. [2]
In September 2012, the first units had trial runs. [1] The first Main Line train operated by the S12 began on 23 October 2012. [3]
Most of the named services operated by the S12 DEMUs were later taken over by the newer S14 DEMUs.
Class | Configuration | Operator | No. in service | Year Built | Cars per Set | Unit numbers. |
---|---|---|---|---|---|---|
S12 | Main Line Set | Sri Lanka Railways | 7 [1] | 2012 - 2013 [1] | 8 | 917-939 |
Office Set | 4 [2] | 7 | ||||
Luxury Set | 1 [1] | 8 |
Configuration | Line | Starting Station | Key Stations | Terminus Station |
---|---|---|---|---|
Main Line Set | Main Line | Colombo Fort | Kandy / Matale | Badulla |
Office Set | Kelani Valley Line | Colombo Fort | Polgahawela | Rambukkana |
Negombo | ||||
Kosgama | ||||
Luxury Set | Main Line | Kandy | Ella |