>Rather than lifting the brushes you electrically disconnect them
>(contactors, IGBTs,...).
>
>Sorry, I didn't think it needed mentioning...
You cannot Victor. I'll draw this, with a section of the comm rolled out
into a strait line.
[view in monospace font]
neutral line
* | *
___ ___ ___ ___^___ ___ ___ ___^___ ___ ___ ___
_______ _______
| | | |
| | | |
| | | |
| | | |
------- -------
advanced retarded
traction regen
brush brush
* notice the shorted comm bar at each location
repeat this segemnt 4 times for the typical 4 pole DC traction motor
Neon
