| MRT Jakarta Series K1 1 18 MRT Jakarta 1000 seriesRatangga | |
|---|---|
 Set 03 withJak Lingko logo. | |
 Interior of the set | |
| In service | 2019–present |
| Manufacturer | Nippon Sharyo |
| Orderno. | CP 108 |
| Built at | Toyokawa, Aichi, Japan |
| Constructed | 2018 |
| Entered service | 24 March 2019 |
| Number built | 96 vehicles (16 sets) |
| Number in service | 96 vehicles (16 sets) |
| Formation | 6-car sets Tc1-M2'-M1'-M2-M1-Tc2 |
| Fleet numbers | 01–16 |
| Operators | MRT Jakarta |
| Depots | Lebak Bulus |
| Lines served | North–South Line |
| Specifications | |
| Car body construction | Stainless steel |
| Train length | 118.15 m (387 ft 8 in) |
| Car length |
|
| Width | 2.95 m (9 ft 8 in) |
| Height |
|
| Floor height | 1.15 m (3 ft 9 in) |
| Doors | 4 per side |
| Wheel diameter | 860–820 mm (34–32 in) (new–worn) |
| Wheelbase | 2,100 mm (6 ft 11 in) |
| Maximum speed | 100 km/h (62 mph) |
| Traction system | Toyo Denki RG6036-A-MIGBT–VVVF[1] |
| Traction motors | 16 × Toyo Denki TDK6326-A 126 kW (169 hp)asynchronous 3-phase AC |
| Power output | 2,016 kW (2,704 hp) |
| Transmission | Twin-Disc (TD) Drive; gear ratio: 6.53 : 1 (98 / 15)[1] |
| Acceleration | 0.92 m/s2 (3.0 ft/s2) |
| Deceleration |
|
| Electric system(s) | 1,500 V DC (nominal) fromoverhead catenary |
| Current collection | Pantograph |
| UIC classification | 2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′ |
| Bogies | ND-748 (powered), ND-748T (trailer) |
| Safety system(s) | Nippon Signal SPARCS moving blockCBTC with subsystems ofATC,ATO under GoA 2 (STO),ATP,ATS,CBI |
| Coupling system | Shibata close-contact |
| Seating | Longitudinal |
| Track gauge | 1,067 mm (3 ft 6 in) |
| Notes/references | |
| Sourced from[2] except where noted | |
TheMRT Jakarta 1000 series, known legally as theSeries K1 1 18,[a] are the first generation rolling stocks to operate in theMRT Jakarta system. The train set is also known as theRatangga.[3][4] The train set was manufactured by Japanese companyNippon Sharyo under Contract CP108, all sets were built in 2018 and started operation on 24 March 2019. It is classified as an executive class train operated with a formation of six trains in each set.[5][6]
In February 2014, four participants who passed the pre-qualification process for the rolling stock tender wereHitachi-Mitsui Consortium,Sumitomo Corporation,Mitsubishi Corporation, andKawasaki-Itochu JV.[7]
The manufacture of theRatangga trains is included in the Phase INorth–South Line project as CP 108. The CP 108 contract for the procurement of the Jakarta MRT rolling stock was awarded to the Sumitomo Corporation - Nippon Sharyo consortium on 3 March 2015.[8] The 16 trains, consisting of six trains each, were ordered at a cost of approximately ¥10.8 billion (Rp145 billion).[9] The trains themselves were made at theNippon Sharyo'sToyokawa, Aichi plant.[10]
In the middle of the production period, the train design was changed in 2017. This design change was prioritised on the driver's cabin which was considered by the then-acting governor of Jakarta,Soni Sumarsono, to 'look like acricket.'[11] The design change changed the contract agreement and was estimated to increase production costs by as much as Rp64 billion.[12]
Ratangga deliveries were made in 2018. The first shipment of two trains arrived atTanjung Priok Port on 4 April 2018.[13][14] The nameRatangga as the designation of the train was announced on 10 December 2018.[3][4]
The first train test was conducted on 9 August 2018. This test was conducted to test the signalling and train systems.[15][16] Meanwhile, the first trial of the series with passengers was carried out on 12 March 2019 which was also a limited public trial.[17] The Ratangga series was first fully operated in conjunction with the inauguration of the Jakarta MRT North-South Line on 24 March 2019.[5][6]
This series of electric railway trains is calledRatangga. The nameRatangga was chosen after deliberations between PT MRT Jakarta and theMinistry of Education and Culture'sLanguage Agency. The nameRatangga is taken from theArjuna Wiwaha andSutasoma books byMpu Tantular.Ratangga itself means wheeled vehicle, chariot, or war chariot inOld Javanese. The choice of the chariot naming, synonymous with a strong and dynamic horse-drawn carriage, is expected tosymbolize a prayer for the smooth operation of the Jakarta MRT. The naming was announced on December 10, 2018, by the thenGovernor of Jakarta,Anies Baswedan, who gave the first batch of MRT Jakarta trainsets their current name.[18]
Each car measures approximately 20 m (65 ft 7 in) in length, 2.9 m (9 ft 6 in) in width and 3.9 m (12 ft 10 in) in height, similar dimensions to many Japanese commuter trains.[19] Each car has four doors on each of its two sides, except for the first and sixth cars which have an additional driver's cabin door on each side. These trains use theCBTC signaling system and are equipped withautomatic train operation (ATO) under GoA 2. The automatic train control is centralised at Lebak Bulus Depot. However, there is still a driver on the train to control the doors and operate the train during emergencies.[20] Like theKRL Commuterline, the MRT trains are also powered viaoverhead catenary.[21]
EachRatangga consists of six cars. Each train has two driver cabins located at the front and rear of the train. Both driving cars are unpowered trailer cars (type Tc) while each intermediate car is equipped with drive motors (type M).[22] AllRatangga trains are classified as executive trains and have serial numbers K 1 18 01 to K 1 18 96. The complete formation of aRatangga train consists of Tc1-M2'-M1'-M2-M1-Tc2.[23] The sets offer awomen-only carriage during morning peak hours from 7AM to 9AM and in the afternoon from 5PM to 7PM.[24]
| MRTJ 1000 trainset | ||||||
|---|---|---|---|---|---|---|
 | ||||||
| Series arrangement | ||||||
| Type | Tc2 | M1 | M2 | M1' | M2' | Tc1 |
| Passenger capacity | 307 | 332 | 336 | 336 | 332 | 307 |
| Number of seats | 48 | 54 | 51 | 51 | 54 | 48 |
TheRatangga and part of the North-South MRT Line tunnel are featured on the front of theRp75,000 design. The electric railway train is placed just below the images ofSukarno andMohammad Hatta and next to theYoutefa Bridge and the Rp75,000 currency value text. TheRatangga train is included in the design to symbolise the achievement of infrastructure development in the 75 years of the Republic of Indonesia.[25][26]