Outback Power AC voltage fluctuation [RE-wrenches]

[William Miller]

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Jay:

The tightness of DC battery cables seems to be more crucial with the 
Outback than with the SW inverters.  We have seen "Low AC Voltage" errors 
that were actually Low DC Voltage problems.  It is my theory that the 
sampling system looks at AC voltage before it looks at DC voltage and thus 
the misleading error indication.  I cleaned and tightened the AC 
connections and resolved the problem.

WM


At 07:51 PM 8/21/2007, you wrote:

>Hi All,
>
>I've got a Dual PP VFX 3524 with 3000 amp hr battery new system.
>Yep same one that I was called out on.
>
>I've fixed most of the problems but I can't seem to understand or fix
>the following.
>
>The AC volts will fluctuate 3-5v with no load change. It'll hold
>steady for a bit, minute or two, then in the space of
>10 seconds it'll do its 3-5v deal, then back.
>Also I've got up to 9v difference between what the Mate says and what
>the volts are actual.
>( all measurements with Fluke 87)
>
>And when the AC loads go up the voltage numbers can get even more
>extreme, and be either higher or lower than what the mate says.
>
>Mostly the customer wouldn't care, but the darn fan in the
>refrigerator keeps going up and down, drives him crazy.
>
>Outback Tech support says this is normal, may be but I haven't seen
>this on any of the many multi inverter systems I've installed.
>
>Any ideas or experiences?
>
>thanks,
>jay
>
>peltz power
>
>
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