Re: [EVGRAY] 120 volt generator

Body

Warren,

A generator for DC, rather than an alternator producing AC and rectified
to DC, just spits out DC.  The DC slip ring is usually segmented to flip
the fields.

On 5/8/2019 2:23 PM, Warren Keillor [email protected]
[EVGRAY] wrote:
>  
> Hi Everyone
> I have this 120 volt 60hz single phase generator, four pole 1800 rpm ,
> a Fairbanks  Morse, possibly from the 1950's. It is very massively
> built, and in decent condition.
> I need such a thing for an experiment I am doing.
> However, it is a challenge to know how to hook it up. I can't find a
> wiring diagram on line.
> It is peculiar. It may predate diodes
> How did they energize the field windings?
> It has a complete commutator, and brushes, as well as slip rings, and
> brushes,
> It was direct coupled to a gas engine. I have installed a stub shaft,
> and a bearing to support the engine end, as the that bearing support
> was the engine bearing.
> It seems pretty good for my purposes if I only can figure out how to
> make it go.
> An interesting feature about it is that it has an electric starter
> function to turn the generator into a motor for starting the gas
> engine it used to be connected to.
> Bart, do you remember that 4 cylinder gas generator I gave you?
> This is likely about a similar vintage, only, this is just a couple of
> KW, I'm hoping will do the job.
> If anybody can remember pre-diode times I would sure be grateful.
> How would the voltage regulation work?
> Cheers Warren
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