EMD GT46MAC

EMD GT46MAC(4000hp)/GT46ACe(4500hp)

WDG4 numbered 12029 of Hubli diesel locomotive shed.
Type and origin
Power type Diesel-electric
Builder EMD
DLW
Model GT46MAC
Build date (EMD) 1997–1998
(DLW) 2002–present
Total produced (EMD) 12 complete, 8 kit form
(DLW) 8 kit assembled, 564 + under license (still in production)
Specifications
AAR wheel arr C-C
UIC class Co-Co, Co'Co'
Gauge 5 ft 6 in (1,676 mm)
Trucks HTSC
Length 69 ft 9 in (21.26 m)
Height 13 ft 6 in (4.11 m)
Axle load 67,000 lbf (300,000 N)????
Loco weight 277,800 lb (126,000 kg)
or 138.9 short tons (124.0 long tons; 126.0 t)
Fuel type Diesel fuel
Fuel capacity 1,600 US gal (1,300 imp gal; 6,100 L)
Prime mover 16-710G3B
Engine type two-stroke V16 diesel
Aspiration turbocharged
Displacement 11,360 cubic inches (186.2 liters)
Alternator TA-17-CA6A AC
Traction motors 1 inverter per truck, AC traction motors
Cylinders 16
Transmission diesel electric
Loco brake Air
Train brakes Air
Performance figures
Maximum speed 75 mph (121 km/h)
Power output 4,000 hp (2,980 kW) / 4,500 hp (3,360 kW)
Tractive effort 121,400 lbf (540 kN)
Gooty (GY) based WDG 4 locos
Siliguri (SGUJ) based WDG 4 locos

The EMD GT46MAC is a freight-hauling diesel-electric locomotive with AC electric transmission built by General Motors Electro-Motive Division[1] in 1997–1998 for Indian Railways, where they are classed as WDG4.[2] Thirteen were built by EMD as order #958647, and a further eight were exported in kit form and were assembled in India. The class entered service in 1999.[3]

Further construction has been under license in India by the Diesel Locomotive Works (DLW); more than 60 additional locomotives have been built as of 2006.[2] They are numbered from #12001 upward. A similar type, the EMD GT46PAC, has also been produced for passenger service in India.

As of 2007, EMD and DLW have begun building GT46Ace's using IGBT technology to replace the older Gate turn-off thyristor technology. Newer editions with 4,500 hp (3,360 kW) have been produced. Over 1000 WDG4 locomotives are currently in operation.

History

WDG4s first started operations in 1999 with the numbering starting from 12001 (this loco can still be seen in a splendid condition and is homed at the parent shed of Hubli.) Hubli Diesel Locomotive Shed has been operational since 1999, and it houses the maximum number of WDG4s from 12001-12064, 12067-12153, 12156, 12169, 12189, 12227, 12276, 12311–12313, 12325, 12326. The original WDG4s from 12001–12021 were imported and later on DLW started manufacturing it indigenously. With six traction motors, this locomotive has the capability of touching 105 km/h (65 mph) with a fully loaded freight train of 58 wagons. The locomotive has been praised for its ability to work smoothly in regions with massive gradients, especially in the (Braganza Ghats) and the Subrahmanya ghats having a gradient of 1:37 and 1:50 respectively.

New specifications

A new model of the WDG4 has been manufactured which develops 4,500 hp (3,360 kW) and has a broader fibreglass cabin, wider wind screens, among other features. These locomotives have been specified as GT46ACe models. WDG4s are being looked into as future locomotives for freight operations in non-electrified sections of India. A new EMD locomotive classified as WDG5 # 50001 with 5,500 hp (4,100 kW) of power output has been manufactured, and is currently under testing at DLW (diesel locomotive works).[4]

Engine sheds holding WDG4s

Sheds holding WDG4s as of August 2015:

! Shed Number of locos Railway Zone
Abu Road (ABR) 8 North Western Railway zone (NWR)
Andal (UDL) 35 Eastern Railway zone (ER)
Bhagat Ki Kothi (BGKT) 98 North Western Railway zone (NWR)
Bondamunda (BNDM) 32 South Eastern Railway zone (SER)
Erode (ED) 4 Southern Railway zone (SR)
Golden Rock (GOC) 38 Southern Railway zone (SR)
Gooty (GY) 109 South Central Railway zone (SCR)
Hubli (UBL) 190 South Western Railway zone (SWR)
Izzatnagar (IZN) 17 North Eastern Railway zone (NER)
Jamalpur (JMP) 17 Eastern Railway zone(ER)
Jhansi (JHS) 10 North Central Railway zone (NCR)
Kalyan (KYN) 16 Central Railway zone (CR)
Katni (KTE) 18 West Central Railway zone (WCR)
Kazipet (KZJ) 47 South Central Railway zone (SCR)
Krishnarajapuram (KJM) 67 South Western Railway zone (SWR)
Lucknow (LKO) 50 Northern Railway zone (NR)
Patratu (PTRU) 41 East Central Railway zone (ECR )
Pune (PA) 79 Central Railway zone (CR)
Raipur (R) 42 South East Central Railway zone(SECR)
Ratlam (RTM) 10 Western Railway zone(WR)
Sabarmati (SBI) 150 Western Railway zone (WR)
Siliguri (SGUJ) 106 Northeast Frontier Railway zone (NFR)
Tughlakabad (TKD) 19 Northern Railway zone (NR)
Visakhapatnam (VSKP) 9 East Coast Railway zone (ECoR)

See also

References

  1. ↑ "GM EMD: GT46MAC". Archived from the original on 2004-03-03. Retrieved 2006-11-19.
  2. 1 2 "[IRFCA] Indian Railways FAQ: Diesel Locomotive Classes – Broad Gauge". Retrieved 2006-11-19.
  3. ↑ "[IRFCA] Indian Railways FAQ: IR History, Part 6". Retrieved 2006-11-19.
  4. ↑ http://webcache.googleusercontent.com/search?q=cache:fVYt57LMZM0J:s1.mywibes.com/ac_project.ppt%3FFileID%3D171fe9821ca2c31745d5ca683ece2187%26s%3D6b4f812db83a250bf15de565e6092159+&cd=2&hl=en&ct=clnk&gl=us

External links

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