| WAG-9 | |
|---|---|
| WAG-9 near Agra Fort. | |
| Power type | Electric |
| Builder | Chittaranjan Locomotive Works, India, Adtranz, Switzerland |
| Gauge | 5 ft 6 in (1,676 mm) |
| Current collection method |
Overhead AC with dual pantographs |
| Top speed | Operational: 120 km/h (75 mph) for 6000 tonne load |
| Power output | 6,350 hp (4,735 kW) |
| Career | Indian Railways |
| Locale | Northern Railways, South-Central Railway |
WAG-9 is the name of a type of electric locomotive used in India. Homed mainly at Gomoh, Ajni,Lallaguda,Tughlakabad and Bhilai, it is currently the most powerful locomotive in Indian Railways' fleet. It is very similar to the class WAP-7; The only difference being the gear ratio which makes it suitable for heavy freight operations. In November 1998, CLW started producing these with indigenous components. The first one, 'Navyug' (translated, 'New Era'), was flagged off on Nov. 14. They have ,like the WAP-5 units, GTO thyristor converters and 3-phase asynchronous motors.
Newer versions starting from Wag-9 31248 feature full igbt traction control.
The class is named as Wag-9i
There is a technical variant of this class named WAG-9H.
Contents |
This locomotive is referred to as the "Heavy Haul" freight locomotive of the Indian Railways
This locomotive was conceived owing to the extreme growth in the rail freight transportation sector. The growth in this sector is considered to be of great importance in the growth of the economy of India. This need had arisen the need for more electrification and electric locomotives in India. Around 60 to 65 % of the freight haulage of the Indian Railways takes place on the electrified section of the Golden Quadrilateral (Indian Railways) and diagonals(which accounts for 25% of the route.) These routes are highly busy routes, so clearance is a necessity. The power of 6350hp and 120km/h rated speed give it great sectional clearance ability. Thus these locomotives are important for the Indian Railways.
Around 350 of these locomotives have been put to service as of early 2011.
These locos should enter Mumbai Area in Western Railway some end of December 2011 or Start of Jan 2012. And these should be enter Mumbai area of Central Railways at the start of Jan 2013.
| Manufacturers | ABB, CLW |
| Traction Motors | ABB's 6FRA 6068 (850kW, 2180V, 1283/2484 rpm, 270/310A. Weight 2100kg) Axle-hung, nose-suspended. |
| Gear Ratio | 77:15 / 64:18 |
| Transformer | ABB's LOT 6500, 4x1450kVA. |
| Power Drive | Power converter from ABB, type UW-2423-2810 with SG 3000G X H24 GTO thyristors (D 921S45 T diodes), 14 thyristors per unit (two units). Line converter rated at 2 x 1269V @ 50 Hz, with DC link voltage of 2800V. Motor/drive converter rated at 2180V phase to phase, 971A output current per phase, motor frequency from 0 to 132 Hz. |
| Hauling capacity | 4250t |
| Bogies | Co-Co, Fabricated Flexicoil Mark IV bogies; bogie wheelbase 1850mm + 1850mm |
| Wheelbase | 15700mm |
| Axle load | 20.5t |
| Unsprung mass per axle | 3.984t |
| Length over buffers | 20562mm |
| Length over headstocks | 19280mm |
| Body width | 3152mmn |
| Cab length | 2434mm |
| Pantographs | Two Secheron ES10 1Q3-2500. |
| Pantograph locked down height | 4525mm |