[RE-wrenches] Magnum inverter issue

[Ray]

Just got off the phone with Magnum tech support.  Their stance:
1) The fluctuation is within the 5% allowable voltage window. (True, but 
still annoying, atypical 120 vac behavior)
2) They haven't changed anything, the inverters have always regulated 
voltage this way..

I replied that I've never seen  this behavior with their inverters in 10 
years, and they again insisted the inverters have always behaved this way.

Ray Walters
Remote Solar
303 505-8760

On 12/13/18 9:55 AM, Ray wrote:
> I've got quite a few Magnum PAEs installed and have not seen this 
> before.  I have one I'm about to install, so I just bench tested it 
> and I did see the fluctuation.  It was cycling from 116vac to 122 vac 
> about every 5 seconds.  As far as Magnum claiming this is "Normal" off 
> grid operation, well, we may be switching inverter brands, because 
> that is the "Wrong" answer.  This reminds me of Xantrex's infamous TR 
> inverters that caused lights to blink on/off, and fridges to cycle 
> every minute.  It wears on appliances and customers' nerves.
>
> Normal operation is stable 120 vac 60 Hz, sine wave. period.  I'm 
> calling Magnum right now, I don't know what they did, but they need to 
> undo it right away.
>
> Ray Walters
> Remote Solar
> 303 505-8760
>
> On 12/13/18 8:15 AM, Drake wrote:
>> I had a PAE 4024 run high voltage so that it wouldn't AC couple at 
>> all. My older PAE does not fluctuate.
>>
>> At 08:14 PM 12/12/2018, you wrote:
>>> Hi all, I’ve had the following issue with a new PAE 4024. It’s 
>>> ac voltage will rise and fall about 10+ volts ( 124-115) over about 
>>> 10 seconds like clock work. Regardless of the load, or battery 
>>> SOC/voltage. I checked with a local shop, they also have the issue. 
>>> They checked all their back stock and they all did the same thing. 
>>> However they had an older one, say 6 months old that didn’t do it. 
>>> Nor do any of my previous magnum installs do this. Clients are not 
>>> too thrilled with this as lights go up and down in brightness. 
>>> Magnum’s response was that this is normal for an off grid inverter 
>>> and that somehow this “feature” has to do with it being able to 
>>> AC couple better. I’m writing to ask if others have seen this as 
>>> well and more importantly if anyone has a fix? Thanks, Jay Peltz 
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