[RE-wrenches] Magnum inverters (not really a power factor issue)

boB Gudgel boB at midnitesolar.com
Sat Aug 1 16:22:33 PDT 2009


Larry Crutcher, Starlight Solar wrote:
> Hey Matt, 
>
> I sure wish their techie's would get to the bottom of it. I am getting 
> gun-shy about selling Magnum and they are about the best available for 
> small 12 volt systems. I have spend hours trying to solve the problem. 
> My customer is still not a happy camper.
>
> Larry Crutcher
> Starlight Solar
> (928) 941-1660
> Renewable Energy Products, Service and Installation

Can you get someone to look at the voltage and/or current going into 
that pump ??   Scope ?   Meter ?  Even a
power factor meter would have both voltage and current measurements.  
Some even have a mediocre scope built in.
A scope AND a meter is best of course.

Need  stats.  AC an DC side.  AC voltage at the pump and at the inverter.

Must have more information.    Yes, it ~could~ be a Magnum inverter 
issue, but need more information other than "it doesn't work"

Does the voltage dip when the pump tries to start ?  What is the maximum 
Ac and DC current ?  Most basic info for troubleshooting.

The inverter manufacturer can probably help somewhat if they have this info.

Just a suggestion here.

boB




>
>
>
> On Aug 1, 2009, at 4:28 PM, Matt Tritt wrote:
>
>> I took boB's advice and talked to Magnum about the problem. Their 
>> take on it? "Hmmm, beats me!" I might be paraphrasing, but that's the 
>> drift. All in all, I'd say that the suggestions from the group are at 
>> least as good as the one's from the manufacturer.
>>
>> Matt T
>>
>> Larry Crutcher, Starlight Solar wrote:
>>> Don't forget, this is a Magnum inverter and Magnum has issues. I 
>>> have  two customers with Magnum problems. One is a washer that will 
>>> work  perfectly on a cheap import inverter; the other has a Vizio TV 
>>> that  works fine on shore power and generator. Soooo...maybe there 
>>> are pumps  and other items that are anti-Magnum.
>>>
>>>
>>> Larry Crutcher
>>> Starlight Solar
>>> (928) 941-1660
>>> Renewable Energy Products, Service and Installation
>>>
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