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Re: Village Voice Article Explains: The Trains Are Slower Because They Slowed the Trains Down

Posted by randyo on Tue Mar 13 20:46:27 2018, in response to Re: Village Voice Article Explains: The Trains Are Slower Because They Slowed the Trains Down, posted by Stephen Bauman on Tue Mar 13 17:21:19 2018.

The truck design has no bearing on whether dynamic brakes are applied in emergency or not. During a BIE, the emergency contactor disconnects all 600V power from the motors thus disabling the dynamic braking. If the emergency contactors were rewired to allow the dynamic braking to remain in effect while only the motive power were disabled, the the dynamic (or regenerative) braking could assist in stopping the train.

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