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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Numbers 20076-20082 Locale Central Railways Delivered 1959 First run 1959 Last run January 2000 Retired Early 2000s Withdrawn Early 2000s Preserved none Disposition All scrapped.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.

History

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. Initially the WCM-4 class were known as EM/4 class.

See also

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

References

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.

External links

• http://www.irfca.org/faq/faq-specs.html#WCM-4
• India railway fan club

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v t e Broad-gauge locomotives of India
Steam	BESA designs SP SG PT HP AP HG HT IRS designs XA XB XC XD XE XF XG XH XP XT XS World War II designs AWD AWE CWD AWC IGR standard designs WP WG WL (1939) WL (1955) WM WT WU WV WW
Diesel	Mixed type WDM-1 WDM-2 WDM-2G WDM-3 WDM-3A (3C) WDM-3D (3B, 3E, 3F) WDM-4 WDM-6 WDM-7 Passenger WDP-1 WDP-2/3A WDP-4 (4B, 4D) Goods WDG-2/3A (3B,3C,3D) WDG-4 (4D) WDG-4G WDG-5 WDG-6G Shunting WDS-1 WDS-2 WDS-3/4C WDS-4 (4A, 4B, 4D) WDS-5 WDS-6 WDS-8
DC electric	Mixed type WCM-1 WCM-2 WCM-3 WCM-4 WCM-5 WCM-6 Passenger WCP-1 WCP-2 WCP-3 WCP-4 Goods WCG-1 WCG-2
AC electric	Mixed type WAM-1 WAM-2 WAM-3 WAM-4 Passenger WAP-1 WAP-2 WAP-3 WAP-4 WAP-5 WAP-6 WAP-7 Goods WAG-1 WAG-2 WAG-3 WAG-4 WAG-5 WAG-6A WAG-6B/6C WAG-7 WAG-8 WAG-9 WAGC-3/WAG-10 WAG-11 WAG-12
Dual (AC and DC) electric	Mixed type WCAM-1 WCAM-2/2P WCAM-3 Goods WCAG-1
Dual mode	Passenger WDAP-5

• Electric locomotive stubs
• Electric locomotives of India
• 1500 V DC locomotives
• Co-Co locomotives
• Railway locomotives introduced in 1959
• 5 ft 6 in gauge locomotives
• Hitachi locomotives
• Scrapped locomotives