description EMD SD90MAC-H Overview
The EMD SD90MAC-H is a six-axle diesel-electric freight locomotive developed by Electro-Motive Division in the late 1990s. It used a 6,000-horsepower, 16-cylinder H-engine and AC traction equipment, placing it among the highest-powered locomotives offered by EMD at the time. The model was built in limited numbers, and its engine design was associated with reliability and maintenance problems. Most examples were later rebuilt or retired.
help EMD SD90MAC-H FAQ
How powerful was the EMD SD90MAC-H?
The EMD SD90MAC-H was designed with a 6,000-horsepower, 16-cylinder H-engine. That placed it among Electro-Motive Division's highest-powered locomotive offerings of the late 1990s.
What type of traction system did the SD90MAC-H use?
It used AC traction equipment, which was intended to provide strong pulling performance for heavy freight service. The locomotive had six axles to distribute its weight and traction.
Who developed the EMD SD90MAC-H?
It was developed by Electro-Motive Division, commonly known as EMD. The design belongs to the late-1990s generation of high-horsepower diesel-electric freight locomotives.
What does the H in SD90MAC-H refer to?
The H identifies the high-power H-engine version of the SD90MAC family. This version is associated with the 6,000-horsepower, 16-cylinder engine described for the locomotive.
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