WAG 7 – (BHEL) (CLW)

WAG-7 is the name of a type of electric locomotive used in India. It is a very powerful locomotive in Indian Railways’ fleet. Built by Chittaranjan Locomotive Works and BHEL, Jhansi to RDSO specifications. WAG7 is an uprated version of WAG-5 locomotive with high capacity transformer, rectifier, traction motor, compressor
and other matching associated equipments. These are six axles loco with axle and nose suspended drive. On 3rd Aug. 1992, the first WAG-7 locomotive was inaugurated and christened the name ‘SHANTIDAN’ in honour of Mother Teresa. The loco is fitted with six Hitachi designed DC series traction motors type HS15250A, controlled by a tap changer are used in this locomotive. Indian Railway is going to achieve 7 million tonnes of traffic, WAG-7 is the main stay of loco. In the locomotive vehicle market WAG-7 is more economical option and one of the cheapest in the world. Around 1750 WAG-7 in service as of January 2013.

Traction Motors : Hitachi HS15250A (a variant of the standard HS15250 with higher current rating (thicker wire gauge, better insulation); see description under WAP-4.) Motors built by CLW and BHEL.
Gear Ratio : 65:18
Transformer : CCL India, type CGTT-5400, 5400kVA, 32 taps.

Rectifiers : Two silicon rectifiers, cell type S18FN350 (from Hind Rectifier), 64 per bridge, 2700A / 1050V per
Axle load :20.5 t.
Loco weight : 113 t
Hauling Capacity : 4000 t
Pantographs :Two Stone India (Calcutta) type AN-12.

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