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Postedover 20 years ago

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Inverter Failures?

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Inverter Failures?

Posted by Anonymous

on Sun, Oct 31 2004 11:19 PM

Does anyone out there have info on how often an Inverter might fail on a Locomotive? I'm after data on both EMD and GE.

Any info appreciated

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Posted by railman

on Mon, Nov 1 2004 2:04 PM

Given the spartan attendance record recently in this forum, I would suggest posting in the trains mag forum.

Posted by M636C

on Mon, Nov 1 2004 5:33 PM

I don't have any real data, but it is worth mentioning that the inverter used for HEP on the P32 DM units is the same as the traction inverters, and if the HEP unit fails, the loco is supposed to switch one of the traction inverters to HEP and run on the remaining three motors.

In the case of the SD70MAC, the Alaska units are designed to switch one "three motor" inverter to HEP when in passenger service, and feed four motors with the remaining unit.

So I guess I'm saying that the failure case has been planned for, but like all electronics, it's pretty reliable under normal conditions.

Peter