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Re: R211a sets

Posted by Train Dude on Sun Jul 7 18:53:56 2024, in response to Re: R211a sets, posted by 3-9 on Sun Jul 7 16:14:25 2024.

If you are speaking of DC Propulsion, thermostat common causes of a dead motor are group switch box issues, either a hi voltage contactor or a low voltage circuit board. Traction motors rarely fail save for not replacing brushes or in the winter getting packed with salt and ice.

As for the NTTs, the AC traction motors are sealed -rarely causing a failure. The most common source of AC propulsion failure is an inverter failure.

Dropped armatures due to bearing failures are common to both motor types but in general, quite rare overall.

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