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Indian locomotive class WCM-4

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Indian locomotive class WCM-4
WCM-4 is more powerful version of the WCM-3
A WCM-4 at Bombay Victoria Electric loco trip Shed
Type and origin
Power typeElectric
DesignerHitachi
BuilderHitachi
Order number59/459/1/RS(F)
ModelEM/4
Build date18 April 1959
Total produced7
Specifications
Configuration:
 • AARC-C
 • UICCo′Co′
 • CommonwealthCo-Co
Gauge5 ft 6 in (1,676 mm)
Bogies3 Axle fabricated frame, Swing bolster with Equalizer beams
Wheel diameterNew: 1,220 mm (4 ft 0 in),
Half worn: 1,182 mm (3 ft 10+12 in) and
Full worn: 1,144 mm (3 ft 9 in)
Wheelbase2,380 mm (7 ft 10 in)
Length:
 • Over couplers20.000 m (65 ft 7+38 in)
 • Over body18.680 m (61 ft 3+716 in)
Width3.050 m (10 ft 116 in)
Height4.282 m (14 ft 916 in)
Frame type3 Axle fabricated frame
Axle load20.83 tonnes (20.50 long tons; 22.96 short tons)
Loco weight125.00 tonnes (123.03 long tons; 137.79 short tons)
Sandbox cap.16 sandboxes each
Power supply110 V DC
Electric system/s1.5 kV DC Overhead
Current pickup(s)Pantograph
Traction motorsHS-373-BR ​
 • Rating 1 hour765A
 • Continuous620A
Gear ratio16:73
MU workingNot possible
Loco brakeAir/Hand, Regenerative braking
Train brakesVacuum
Compressor7kg/cm²
Safety systemsSlip control, Over voltage relay, No volt relay, Low pressure governor, Vacuum governor Train parting alarms, and Brake cylinder cutoff valve
Performance figures
Maximum speed120.5 km/h (75 mph)
Power output:
 • StartingMax: 4,000 hp (2,980 kW)
 • 1 hourMax: 4,000 hp (2,980 kW)
 • ContinuousMax: 3,290 hp (2,450 kW)
Tractive effort:
 • Starting31,250 kgf (310 kN)
 • 1 hour25,300 kgf (250 kN)
 • Continuous18,700 kgf (180 kN)
Factor of adh.0.25
Career
OperatorsIndian Railways
ClassEM/4
Numbers20076-20082
LocaleCentral Railways
Delivered1959
First run1959
Last runJanuary 2000
RetiredEarly 2000s
WithdrawnEarly 2000s
Preservednone
DispositionAll scrapped.

The Indian locomotive class WCM-4 was a class of 1.5 kV DC electric locomotives developed in the late 1950s by Hitachi for Indian Railways. The model name stands for broad gauge (W), Direct Current (C), Mixed traffic (M) engine, 4th generation (4). A total of 7 WCM-4 locomotives were built in Japan in 1959 for Central Railways.[citation needed]

History

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Indian Railways decided to procure seven locomotives from Hitachi. They were manufactured in Japan and shipped to India in 1959. These locomotives had now-common Co-Co wheel arrangement.[1] Initially the WCM-4 class were known as EM/4 class.[2]

See also

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References

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  1. ^ "Refer pg 260" (PDF).
  2. ^ Gudgin, D.S.E. (1976). Vulcan Foundry Locomotives 1832–1956. Truro: Bradford Barton. ISBN 978-0-85153-215-8.
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