Re: Cap Start Motor

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net> 

Hi David,

That could be the case.  I was afraid I damaged something so I took it apart
and found the wiring error.  The winding looked OK so I tested each turn for
interturn shorts by running 2 amps DC thru the coil and measuring the
voltage between each turn (.0003V).  All adjacent turns measured the same so
I powered up the coil with the circuit breaker bypassed to degause it (just
in case) and test for normal behavior.  After i reenabled the breaker
everything worked OK (breaker didn't trip).  Now to wire it up correctly.

Gerry R


 > Original poster: DRIEBEN-at-midsouth.rr-dot-com
 >
 > Hi Gerry,
 >
 > I don't see how the soft silicon steel of the core of any transformer,
 > with its very high permeability, will hold its own permanent magnetism.
 > Maybe someone else could comment on this? I have noticed that sometimes
 > when a circuit breaker has been tripped, if you try to immediately re-
 > set it and turn it back on, it will often trip again when you turn it
 > back on after reset. Sometimes I have to "play" with it by going thru
 > several "reset, power-up" cycles, even though the fault has been re-
 > moved or corrected. Maybe that was the case with your variac? Just a
 > thought.
 >
 > David Rieben
 >
 >