Inverter Generators? [RE-wrenches]

[Nick Houser]

Travis----the Yamaha genset you describe; is it the EF2600X? If not, could
you provide the correct model number? 3600 RPM' MMZ175 engine?  Thanks,
Nick Houser, Off Grid Power
----- Original Message -----
From: "Travis Creswell, Ozark Solar" <ozsolar at ipa.net>
To: "RE-wrenches" <RE-wrenches at topica.com>
Sent: Monday, May 20, 2002 6:26 PM
Subject: Inverter Generators? [RE-wrenches]


> ?...Yeah, that's what I thought when I first noticed them about a year
ago.
> But then I recently had the opportunity use one and was quite impressed
with
> it.  Extremely quiet, very smooth and really light weight.  Perhaps you've
> seen the little Honda's with a handle on top?
>
> So I bought one for my self.  A Yamaha 120 v, 2800 watt unit that weighs
58
> lbs.  I went with the Yamaha as it's all metal and if you ever worked with
> my guys you'd know why.   From what I can tell the 2800 watt rating is
> conservative and it appears to have excellent surge power.  Best I can
tell,
> it's generating AC which gets sent to a rectifier (or maybe just a series
of
> capacitors to create a DC buss) and feeds an inverter which outputs
119-123
> VAC @ 60.00 (that's 60.00 measured with a Fluke 87) cycles no matter what
I
> do to it.   What's especially cool about this unit is that it continuously
> varies the RPM with load.  Way more useful than the units with auto idle,
> which don't produce any usable energy until they run back up to full
speed.
> At just a few hundred watts of load it is still idling, producing steady
> a120v @ 60 hz. power.
>
> I was especially curious about what it's output waveform would do to the
> charge rate an inverter so I plugged my Trace Tiger 500 into it.  The
> generator was idling and in just a few seconds, dang if the Tiger didn't
> lock onto it charge at it's max rate.  The generator never changed speed,
it
> just kept idling along.  I bet few have ever seen a Tiger charge at it's
max
> rate on generator power and I assume the DR would also perform a heck of
lot
> better when using this style of generator.    It's so quiet you can have a
> conversation at normal voice within 5' of it.  I power my shop with a SW
and
> will soon test the SW's charger with it.
>
> These units are touted to as providing very clean, quiet power and are
> marketed to the RV crowd.  Anybody else played with these?
>
> Travis Creswell
> Ozark Energy Services
>
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