Indian locomotive class WAM-4

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Indian WAM-4
WAM-4 of Itarsi Electric Loco Shed
Type and origin
Power typeElectric
BuilderChittaranjan Locomotive Works, India
Specifications
Configuration:
​
 • UICCo′Co′
Gauge5 ft 6 in (1,676 mm)
Axle load18.8 tonnes (18.5 long tons; 20.7 short tons)
Electric system/s25 kV AC
Current pickup(s)Overhead with pantograph
Performance figures
Power output3,850 hp (2,870 kW)
Tractive effort33840 KgF
Career
LocaleAll over India

The Indian locomotive class WAM-4 is a very successful class of 25 kV AC electric locomotives used in India. The first member of the class was indigenously designed and built by CLW in 1970-71. The class was produced until about 1997.

The locomotives in the class feature rheostatic braking, and MU capability. They use the same power bogies as the successful WDM-2 class of diesel-electric locomotives. Being designed specially for mixed traffic, the WAM-4 class has rendered excellent service.

Image Gallery

  • WAM 4 series loco 20491 with VSKP-Nanded Express
    WAM 4 series loco 20491 with VSKP-Nanded Express
  • WAM 4 series loco 21226 at Moulaali
    WAM 4 series loco 21226 at Moulaali
  • WAM 4 series loco 21219 at Visakhapatnam
    WAM 4 series loco 21219 at Visakhapatnam
  • 13022 (Raxaul-Howrah) Mithila Express
    13022 (Raxaul-Howrah) Mithila Express
  • WAM-4P loco of BZA at Secunderabad
    WAM-4P loco of BZA at Secunderabad
  • WAM 4 with the Malwa Express
    WAM 4 with the Malwa Express
  • 12295 (SBC-PNBE) Sanghamitra Express
    12295 (SBC-PNBE) Sanghamitra Express

Technical specifications[1]

Traction Motors Alstom TAO 659 A1 (575kW, 750V). Six motors, axle-hung, nose-suspended, force-ventilated.
Gear Ratio 15:62 originally (and still for WAM-4 2S3P), now many variations, 21:58 being common for WAM-4 6P locos.
Transformer Heil BOT 3460 A, 22.5kV / 3460kVA.
Rectifiers Two silicon rectifier cells, 1270V / 1000A each cubicle.
Pantographs Two Faiveley AM-12.
Hauling capacity 2010t
Current Ratings (WAM-4 6P) 1100A/10min, 750A continuous

See also

References

Notes

  1. ^ Indian AC electric loco information

Bibliography

  • Hughes, Hugh (1996). Indian Locomotives: Part 4 – 1941–1990. Harrow, Middlesex: The Continental Railway Circle. ISBN 0-9521655-1-1. OCLC 35135033.

External links

Wikimedia Commons has media related to Indian locomotive class WAM4.
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