Indian locomotive class WCAM-1

The WCAM-1 was a class of locomotive used in the Indian Railways system. They were the first locomotives from the WCAM class. These locos were operational in routes around Mumbai. These locomotives worked on both AC as well as DC as their classification suggested. while the last one, #21852, was withdrawn from service on 11 May 2015. Since then, all units of this class have been scrapped with no locomotives preserved. ==Technical specifications==

Source: Of all the 30 notches, 1-21 were DC notches allowing series operation of traction motors. Rest of the 8 notches allow series-parallel combination under DC. Under AC, the combinations were 3S-2P and 2S-3P. These locomotives could run in parallel combination but it was discouraged due to power problems under DC. Under AC, the locomotives were run under parallel notches nearly always. Although these engines were not rebuilt to use only parallel combination under AC. Field weakening of traction motors was possible at 21st and 30th notches. Voltage control was done by Tap changer operation under AC and Resistance notching under DC. Traction motors were charged by DC. Its prototypes were tested in the year 1971. ==Locomotive shed==

All 53 WCAM-1s were based at Valsad Electric Loco Shed in Gujarat, and were withdrawn from service after the conversion of entire Mumbai region into AC traction. ==Trains Hauled by WCAM-1==

The WCAM-1 were employed on all express trains, including Shatabdi and Rajdhani Express (till Vadodara), until AC electrification of Mumbai area. The arrival of WCAM-2P engines did not reduce their work loads. Later on, with introduction of more modern AC locomotives and need for faster trains, the WCAM-1s were relegated to secondary passenger trains, including: • Mumbai Central - Ahmedabad Junction Passenger • Valsad - Bandra Terminus express • Valsad - Viramgam Passenger • Bharuch - Virar Passenger • Valsad Fast Passenger • Bandra Terminus Vapi Passenger • Ahmedabad Passenger • Surat - Virar Shuttle • Ahmedabad - Valsad Passenger These trains were being hauled by the WCAM-1 locomotives, before their final retirement in 2015. ==Performance ==

Source: Following is the capacity of WCAM-1 locomotive with gear ratio 16:61 under AC for 4 wheeler wagons (in tonnes) :- Following is the capacity of WCAM-1 locomotive with a gear ratio of 16:61 under AC for BOX wagons (in tonnes):- Following is the capacity of WCAM-1 locomotive with gear ratio 16:61 under AC for ICF coaches (in tonnes):- Following is the capacity of WCAM-1 locomotive with a gear ratio of 16:61 under AC for BOXN wagons (in tonnes):- Following is the capacity of WCAM-1 locomotive with gear ratio 16:61 under DC for 4 wheeler wagons (in tonnes):- Following is the capacity of WCAM-1 locomotive fitted with TAO659A1 with a gear ratio of 16:61 under DC for BOX wagons (in tonnes):- Following is the capacity of WCAM-1 locomotive with gear ratio 16:61 under DC for ICF coaches (in tonnes):- Following is the capacity of WCAM-1 locomotive fitted with TAO659 with a gear ratio of 16:61 under DC for BOX wagons (in tonnes):- Following is the capacity of WCAM-1 locomotive with a gear ratio of 21:58 under AC for ICF coaches (in tonnes):- Following is the capacity of WCAM-1 locomotive with gear ratio 21:58 under DC for ICF coaches (in tonnes):- ==See also==