EMD GT46MAC

Infobox Locomotive
name = EMD GT46MAC
powertype = Diesel-electric

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caption = WDG-4 numbered 12049 at Hi-Tec station
builder = EMD & DLW
model = GT46MAC
builddate = (EMD) 1997–1998; (DLW) 2002—Present
totalproduction = (EMD) 12 complete, 8 kit form; (DLW) 8 kit assembled, 60+ under license (still in production)
aarwheels = C-C
gauge = 5 ft 6 in (1.68 m)
trucks = HTSC
length = 69 ft 9 in (21.3 m)
height = 13 ft 6 in (4.12 m)
weight = 277,800 lb (126 tonnes)
axleload = 67,000 lbf
fueltype = diesel
fuelc
US gallons (6,000 liters)
primemover = 16-710G3B
enginetype = 2-stroke diesel
displacement = 11,360 in² (186.2 liters)
aspiration = turbocharged
alternator = TA-17-CA6A
tractionmotors = AC
cylindercount = V16
transmission = electric; AC alternator, 1 inverter per truck, AC traction motors
topspeed = 65 mph (100 km/h)
poweroutput = 4,000 hp (3,000 kW)
tractiveeffort = 121,400 lbf (540 kN)
locobrakes = air
trainbrakes = air

The EMD GT46MAC is a freight-hauling diesel-electric locomotive with AC electric transmission built by General Motors Electro-Motive Division [cite web
url = http://web.archive.org/web/20040303123345/http://www.gmemd.com/en/locomotive/international/gt46mac/
title = GM EMD: GT46MAC
accessdate = 2006-11-19] in 1997–1998 [cite web
url = http://www.trainweb.org/emdloco/958647.htm
title = EMD 958647, GT46MAC, India IR 12001 to IR 12013
work = The UNofficial EMD Homepage
accessdate = 2006-11-19 ] for Indian Railways, where they are classed as WDG-4.cite web
url = http://www.irfca.org/faq/faq-history6.html
title = [IRFCA] Indian Railways FAQ: Diesel Locomotive Classes – Broad Gauge
accessdate = 2006-11-19] Thirteen were built by EMD as order #958647, and a further eight were exported in kit form and were assembled in India. The class entered service in 1999.cite web
url = http://www.irfca.org/faq/faq-history6.html
title = [IRFCA] Indian Railways FAQ: IR History, Part 6
accessdate = 2006-11-19] Further construction has been under license in India by the Diesel Locomotive Works (DLW); more than 60 additional locomotives have been built as of 2006. They are numbered from #12000 upward. A similar type, the EMD GT46PAC, has also been produced for passenger service in India.

As of 2007 EMD and DLW have begun building GT46MACs using IGBT technology to replace the older Gate turn-off thyristor technology.

References