[Milsurplus] Mil generator

[Joe Foley]

Nope,

I have an MEP-017A and an MEP-018A.  They can both be
switched to 120 volt 3-phase delta OR 240 volt 3-phase
delta.

Joe




--- Scott Johnson <scottjohnson1 at cox.net> wrote:

> 120/240  is single phase, center tapped, with the
> center tap as neutral.
> 115/208 (or 277/480) is three phase wye, with the
> center as neutral and 115 
> (277) from each leg to neutral, with 208 (480)
> between legs.
> People often mistakenly refer to 120/240 as "two
> phase", but true two phase 
> pretty much died in the forties, and is quadrature
> (90 degrees)
> Delta connections are primarily used in power
> transmission, when it is 
> transformed for use, it is generally wye connected.
> Most modern military generators 5KVA and above can
> be connected for 115/208 
> wye or 120/240 single phase, this is sometimes
> accomplished with a switch, 
> and sometimes at a terminal board. The choice is
> dependent upon the type of 
> load contemplated. Comm shelters usually need three
> phase, and a group of 
> tent used for living spaces is probably going to use
> single phase.  The 
> generator weill typically source more power and
> generate less waveform 
> distortion when connected for three phase.
> Scott
> 
> ----- Original Message ----- 
> From: "Joe Foley" <redmenaced at yahoo.com>
> To: <milsurplus at mailman.qth.net>;
> <milgensets at yahoogroups.com>
> Sent: Saturday, March 11, 2006 5:34 PM
> Subject: Re: [Milsurplus] Mil generator
> 
> 
> 
> > > 120/240 3-phase 3 wire
> >
> > This should be 1 phase, not 3 if it is 3 wire. A 3
> > phase delta,
> > configuration would be 3 wire, but this is not
> > normally done except for
> > transformer distribution systems.
> +++++++
> No, it could be 120/240 3-phase 3-wire.
> 
> USUALLY you have 240 volt 4-phase, BUT, if you
> connect
> the windings at the mid-point and parallel them you
> can get 120 volt 3-phase in a delta configuration. 
> It
> would give you three 120 volt circuits easily right
> off the genset.
> 
> Joe
> 
> 
> 
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