Indian locomotive class WAP-4

WAP-4
A WAP - 4 class locomotive 22820 of Indian Railway belonging to Arakkonam shed, bringing the Thiruvananthapuram - Nagercoil Passenger train to Nagercoil Junction
Type and origin Power type Electric Builder Chittaranjan Locomotive Works, West Bengal, India Build date 1993 till December 2, 2015 Total produced 776 as of August 2016 (Production Ceased)
Specifications Configuration: ​  • AAR C-C  • UIC Co'-Co' Gauge 5 ft 6 in (1,676 mm) Bogies Co-Co Flexicoil Mark 1 cast bogies; primary and secondary wheel springs with bolsters Wheel diameter New:1,092 mm (3 ft 7 in) Half worn: 1,055 mm (3 ft 5+1⁄2 in) Full worn: 1,016 mm (3 ft 4 in) Length 18.794 m (61 ft 7+29⁄32 in) Width 3.179 m (10 ft 5+5⁄32 in) Height 4.272 m (14 ft 3⁄16 in) Axle load 18,800 kg (41,400 lb) Loco weight 112,800 kg (248,700 lb) Electric system/s 25 kV 50 Hz AC AC Overhead Current pickup(s) pantograph Traction motors Hitachi HS15250 Loco brake Air Train brakes Air Safety systems Slip control, Over voltage relay, Main overload relay, Earth Fault Relay, Low Pressure Governor, Brake Cylinder Cutoff Valve, Train parting alarms and No OHE volt relay
Performance figures Power output Continuous: 5,060 hp (3,773 kW) Tractive effort 30,800 kgf (302 kN; 68,000 lbf)
Career Operators Indian Railways Numbers 22061 and from 22201 to 22399 and 22500 to 22999 and 25000-25051 Locale All over India Disposition Active

WAP-4 loco of Erode shed hauling an Express train in India

WAP - 4 is the mainstay passenger electric locomotive used in India.

The locomotive was developed after a previous class WAP-1 was found inadequate to haul the longer, heavier express trains (24-26 coaches) that were becoming the mainstay of the Indian Railways network. It was introduced in 1994, with a similar bodyshell to the WAP-1 class, but with Hitachi traction motors.

List of WAP 4 loco sheds:

• Ghaziabad

• Arakkonam

• Erode

• Mughalsarai

• Itarsi

• Howrah

• Santragachi

• Lallaguda

• Kanpur

• Ludhiana

• Bhusaval

• Visakhapatnam

• Gonda

• Vijayawada

• Vadodara

Image Gallery

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  Indian locomotive class WAP-4 (22592) from Vijayawada Loco Shed (BZA)
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  Indian locomotive class WAP-4 (22794) from Erode Loco Shed (ED)
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  Indian locomotive class WAP-4E (22352) from Vadodara Loco Shed (BRC)
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  Indian locomotive class WAP-4 (22595) from Lallaguda Loco Shed (LGD)
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  Indian locomotive class WAP-4 (22278) from Mughalsarai Loco Shed (MGS)
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  Indian locomotive class WAP-4 (22685) from Vijayawada Loco Shed (BZA)
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  Indian locomotive class WAP-4 (22846) from Bhusawal Loco Shed (BSL)
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  Indian locomotive class WAP-4 (25050) from Visakhapatnam Loco Shed (VSKP)
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  Indian locomotive class WAP-4 (22291) from Howrah Loco Shed (HWH)
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  Indian locomotive class WAP-4 (22304) from Vijayawada Loco Shed (BZA)
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  Indian locomotive class WAP-4 (22746) from Vijayawada Loco Shed (BZA)
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  Indian locomotive class WAP-4 (22856) from Itarsi Loco Shed (ET)
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  Indian locomotive class WAP-4 (25024) from Arakkonam Loco Shed (AJJ)
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  Indian locomotive class WAP-4 (22794) from Erode Loco Shed (ED)
• 
  Indian locomotive class WAP-4 (22877) from Santragacchi Loco Shed (SRC)

See also

• History of rail transport in India
• Indian Railways
• Locomotives of India
• Rail transport in India

References

Bibliography

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