From Wikipedia, the free encyclopedia
Indian locomotive class WCM-4
A WCM-4 at Bombay Victoria Electric loco trip Shed
Type and origin Power type Electric Designer
Hitachi Builder
Hitachi Order number 59/459/1/RS(F) Model EM/4 Build date 18 April 1959 Total produced 7
Specifications Configuration: •
AAR
C-C •
UIC Co′Co′ • Commonwealth
Co-Co
Gauge
5 ft 6 in (1,676 mm )
Bogies 3 Axle fabricated frame, Swing bolster with Equalizer beams Wheel diameter New: 1,220 mm (4 ft 0 in), Half worn: 1,182 mm (3 ft 10+ 1 ⁄2 in) and Full worn: 1,144 mm (3 ft 9 in)
Wheelbase 2,380 mm (7 ft 10 in) Length: • Over couplers 20.000 m (65 ft 7+ 3 ⁄8 in) • Over body 18.680 m (61 ft 3+ 7 ⁄16 in)Width 3.050 m (10 ft 1 ⁄16 in)Height 4.282 m (14 ft 9 ⁄16 in)
Frame type 3 Axle fabricated frame
Axle load 20.83 tonnes (20.50 long tons; 22.96 short tons) Loco weight 125.00 tonnes (123.03 long tons; 137.79 short tons) Sandbox cap. 16 sandboxes each
Power supply 110 V
DC
Electric system/s 1.5 kV
DC
Overhead
Current pickup(s)
Pantograph
Traction motors HS-373-BR • Rating 1 hour 765A • Continuous 620A Gear ratio 16:73
MU working Not possible
Loco brake
Air /
Hand ,
Regenerative braking
Train brakes
Vacuum Compressor 7kg/cm² Safety systems Slip control, Over voltage relay, No volt relay, Low pressure governor, Vacuum governor Train parting alarms, and Brake cylinder cutoff valve
Performance figures Maximum speed 120.5 km/h (75 mph) Power output: • Starting Max: 4,000 hp (2,980 kW) • 1 hour Max: 4,000 hp (2,980 kW) • Continuous Max: 3,290 hp (2,450 kW)
Tractive effort : • Starting 31,250 kgf (310 kN) • 1 hour 25,300 kgf (250 kN) • Continuous 18,700 kgf (180 kN)
Factor of adh. 0.25
Career Operators
Indian Railways
Class EM/4 Numbers 20076-20082 Locale Central Railways Delivered 1959 First run 1959 Last run January 2000 Retired Early 2000s Withdrawn Early 2000s Preserved none Disposition All scrapped.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 ]
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]