Indian locomotive class WAG-1

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Indian locomotive class WAG-1
WAG1 20710 locomotive.jpg
WAG-1 20710 Bidhan at NRM
Type and origin
Power typeElectric
BuilderKraus-Maffei, Krupp, SFAC, La Brugeoise & Nivelle (50 cycles European group)
Build date1963–1966
Total produced112
Specifications
Configuration:
   AAR B-B
   UIC B-B
Gauge 5 ft 6 in (1,676 mm)
Bogies Monomotor B-B bogies
Wheel diameterNew: 1,140 mm (3 ft 9 in)
Half worn: 1,120 mm (3 ft 8 in)
Full worn: 1,064 mm (3 ft 6 in)
Length14.600 m (47 ft 10+1316 in)
Width3.109 m (10 ft 2+1332 in)
Height4.165 m (13 ft 7+3132 in)
Axle load 18,640 kg (41,090 lb)
Loco weight74,000 kg (163,000 lb)
Electric system/s 25 kV 50 Hz AC AC Overhead
Current pickup(s) Pantograph
Traction motors Siemens/ACEC/Alstom MG 710A (740hp, 1250V, 480A, 1000 rpm).Fully suspended, force-ventilated.
Loco brake Air
Train brakes Vacuum
Performance figures
Maximum speed112 km/h (70 mph)
Power output2,930 hp (2,185 kW)
Tractive effort:
  Starting25,000 kgf (250 kN; 55,000 lbf)
Career
Operators Indian Railways
Numbers20700-20709 (Niv. / SFAC) 20710-20791 (CLW) 20849-20868 (Niv. / SFAC)
LocaleAll over India
DispositionOne preserved, remainder scrapped

The Indian locomotive class WAG-1 was a class of 25 kV AC electric locomotives that was imported from Europe in the 1960s for Indian Railways. The model name stands for broad gauge (W), AC Current (A), Goods traffic (G) locomotive, 1st generation (1). A total of 112 WAG-1 were built by The European Group 50 Hz Group/European Group/50 Cycles Group (consortium) between 1963 and 1966. They entered service in 1964. [1]

Contents

The WAG-1 served both passenger and freight trains for nearly forty years. As of January 2002, all locomotives have been withdrawn from service, with one being preserved at the National Rail Museum.

History

Forty-two locomotives of this type were ordered from European Group. Five of these were completely assembled in Europe and the remaining were built at CLW. A repeat order was placed on for 20 locomotives in 1963. Further these locomotives were manufactured at CLW. The typical feature of these locomotive is the Monomotor bogies. This construction results in substantial saving in weight in traction equipment and gives better adhesion. The traction motors are force ventilated and are fully suspended type. These motors are permanently grouped in parallel and are controlled by tap changer and field weakening. This can be used for a multiple unit operation to a maximum of four locomotives. Compressed air brake for the loco and vacuum brake for the train are provided, in addition, these locomotives have been provided with regenerative braking. Few locomotives have been converted to dual brake system. They were in service until 2002 when all but one were scrapped. The first indigenously CLW produced WAG-1 20710 'Bidhan' is preserved at the National Rail Museum, New Delhi. [2]

Variants

Specification

Locomotive shed

See also

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References

    1. "[IRFCA] Indian Railways FAQ: Diesel and Electric Locomotive Specifications". www.irfca.org. Archived from the original on January 9, 2018.
    2. "Electric Locomotive Classes – AC Electrics". www.irfca.org.