[RE-wrenches] Heart Interface Inverter

[Chris Mason]

For what it's worth, the Fluke is known to mistake harmonics for base
frequency. I would look to borrow for a scope or at least use a cheaper
meter that can accurately report the frequency. Try slowing the generator
to 59 Hz to see if the inverter likes it better.


On Fri, Aug 17, 2012 at 10:24 PM, mac Lewis <maclewis1 at gmail.com> wrote:

> Hello Wrenches,
>
> AC charging system specs
> Onan Marquis Gold 5500 LP Model 5.5HGJAB119D generator
> Heart Interface Freedom 20 Model Inverter Charger (120VAC, 100A charger,
> 12VDC)
>
> I have a new customer who has a used Onan RV generator (as specified
> above), working with a Heart Inverter charger (specified above).  When the
> generator is started, the Heart inverter kicks on and starts to charge,
> after about 3 seconds it kicks off, then on, then off and repeats.  The
> voltage and frequency of the generator output look good. 120V L-N and 60-62
> Hz no load.  The Heart just doesn't seem to like it after it kicks on the
> charger.  (Sorry, no scopemeter available)
>
> What is very interesting is that on the other pole of a transfer switch
> connected to the AC input, is a fairly inexpensive gas generator, pull
> start, on wheels etc.  This puts out 108VAC at 59-60Hz.  When connected to
> this generator the Heart immediately latches in and will continue charging
> flawlessly at 100ADC.  For whatever reason, the Heart, doesn't like the
> voltage waveform of the Onan generator.  The Fluke 87 multimeter that I was
> using to test, was catching some type of transient (frequency reading would
> shoot up to 70-100Hz) when the Heart would latch into the Onan.  Other that
> that with my simple tools I could see no real difference between these
> generators, other that the 108VAC of the gas generator.
>
> Any ideas, or known compatibility issues with this equipment?
>
> Thanks
>
> --
>
>
>
> Mac Lewis
>
> *
>
> "Yo solo sé que no sé nada." -Sócrates
> *
>
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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