CSXT Explains Locomotive Consist Arrangement
CSXT explained in a recent issue of its Midweek Report that locomotive consists of two or more units are often arranged so that older models are in the lead position, in front of more modern alternating current units, due to the potential for damage by crews who may unintentionally apply too much power at too low speeds.
"We studied a representative sample of locomotive consisting and found that AC units properly trailed certain models that require the older engines to be in the lead because of the potential for damage. But we also found that some of the consists (about 25 percent of the mixed consists) had AC units as trailing units when they could be the lead units," according to Mike Cantrell, vice president-mechanical. He added that the company is studying traction motor protection panels to try to find a way to protect against power overloads on older models when they trail the AC units. "Tests are currently under way, but the technology is still relatively unproven."