Re: 7.5 HP Lathe on a 10 HP idler?

"Robert Swinney" <judybob@xxxxxxxxx> fired this volley in
news:wKednbICp8shE4zXnZ2dnUVZ_uadnZ2d@xxxxxxxxxxxx:

Jim, my confusion arises in that AFAIK if we were to "plug reverse"
only the load motor, the connections would be single-phase line to
A,
B of the idler, A of idler to B of load, and B of idler to A of
load,
With C terminals together. It seems to me this connectivity would
reverse only the load motor, not both motors.

Please explain if this is not the case.

My read on this is that, in the absence of start or run capacitors,
the motors could be spun up in either direction. When the attempt is
made to plug-reverse the load motor, it won't reverse the idler
(alone) What it's actually trying to do is reverse BOTH of them, and
it'll simply stall both in the effort.

In this perfect parallel connection, there's nothing to distinguish
the idler from the load motor except where it's physically located.

LLoyd
.

Relevant Pages

  • Re: 7.5 HP Lathe on a 10 HP idler?
    ... the connections would be single-phase line to ... reverse only the load motor, ... control circuits running from single phase in the machine. ...
    (rec.crafts.metalworking)
  • Re: 7.5 HP Lathe on a 10 HP idler?
    ... No I really meant to say a swap of any 2 leads going to the load would reverse the load. ... Perhaps Jim will get back to us on some questions posed in an earlier post on this subject. ... reverse only the load motor, ...
    (rec.crafts.metalworking)
  • Re: 7.5 HP Lathe on a 10 HP idler?
    ... slight imbalance would eventually reverse the idler. ... reverse only the load motor, ...
    (rec.crafts.metalworking)