3 ms·
Operating in notch 6 runs the generator at 647 RPM. Since the AR10 is a 10 pole machine, that gives 64.7 Hz power. This part doesn't quite make sense though, b
by caf 6y ago
Operating in notch 6 runs the generator at 647 RPM. Since the AR10 is a 10 pole machine, that gives 64.7 Hz power.
This part doesn't quite make sense though, because it mixes RPM (per-minute) with Hz (per-second) without scaling.
647 RPM is 10.8 Hz, and more poles should increase the frequency not decrease it - 10 poles means you'd multiply it by 5, so would give you 54 Hz.
- hwillis 6y agoprobably 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 agoI 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.