ECN Forum Forums Photo Discussion Forums Electrical Nostalgia What was this DC generator for?

I just spent a few minutes looking over a pretty good copy of this print that I brought home. There is no line drawn to indicate the AC feed to the compensator that I see. For that matter, the compensator itself is not drawn but was probably, just as today, not that equipment specific about the disconnects and starters that may or may not come as part of an assembled piece of equipment.

But I wonder why nothing was called out to feed the AC motor of the genset.

BTW, the 3-#8's in 1" pipe that leave the unitvent cabinet go to the other side of the building to a unitvent sup panel.

All the feeds simply go to unitvents, so must have fed DC motors.

Were AC motors less desirable for some things...speed control for instance.