I have a Delco Remy dynamotor. It was made for tanks. Was new in 1972.
There are two sets of pairs of brushes at both ends.
I can see that one pair of brushes at one end outputs (Lo) voltage (i.e
240v). Another pair of brushes at the other end outputs (Hi) voltage (400v or something like that). So, that's the generator part.
Now, that still leaves one pair of brushes on either end. These are associated with the motor part.
It's strange to me, but I can see that it looks as if there are two motor armature windings on the same shaft. Each motor armature seems to be connected as a shunt motor but with a series winding as well. So, two compound motors are connected in parallel that drives the shaft around. The polarity of the brushes for each motor are revered, i.e
Lo Hi _+_ _ _ _ _ _-_
---------------------------------- Shaft _-_ _ _ _ _ _+_
Lo Hi
_ _ = brush
I'm just curious if anyone knows about this arrangement. Can this dynamotor be driven on one motor armature only? Or are both motor armatures supposed to be conected?
I think when drawing out the schematic I'll have to have two motor armature symbols and two generator armature symbols, plus the field windings.