4 ms·

probably 54 Hz- split phase power has a GND, positive phase, and negative phase: https://techblog.ctgclean.com/wp-content/uploads/Split-Phase-Power-IIaa-e143869

probably 54 Hz- split phase power has a GND, positive phase, and negative phase: https://techblog.ctgclean.com/wp-content/uploads/Split-Phase-Power-IIaa-e1438697473899.jpg https://techblog.ctgclean.com/wp-content/uploads/Split-Phase... Alternating phases would be hooked up to one phase or the other, with negative phase poles connected backwards. I know traction motors are brushed, so probably the generators are as well. If that's the case then you should be able to just bolt new wires on (brushes are consumables, so they are easily replaceable). edit: managed to misread your conclusion as it would be 110 Hz, lol.

mindslight 6y ago
I wonder what they did with the 5 phases? Use them asymmetrically and let the engine struggle with the unbalanced load? Also it seems like this feed would be no good for powering 3 phase motors, or really any phase-phase load. Although maybe city hall back then was only on single phase power, and they could balance circuits between all 5 phases, with the probable addition of temporary electric heaters etc.