[RE-wrenches] ] Dusty off -grid conditions

[Dave Angelini Offgrid Solar]

I was lucky to spend 10 years on my sailboat mostly in the tropics doing
marine electronics.
I learned right away that the BMU (basic marine unit) was about (10) one
hundred dollar bills.
One needs to keep many BMU's to replace bad electronics (sealed or wide
open) on board.
I worked on dozens of really nice boats and they all were the same. Keep
lots of BMU's!
1/8 inch holes with metal screens seemed to be the best.
The worst electronics were the Heart interface inverters. Just about all
the airports had people carrying them to get fixed.
The best thing about BMU's is you can always burn them and create heat to
get rid of the moisture.

Sarcastic today after about 40 days of smoke, wildfires, and a very
unusual for here stint of 100+ days.  --Dave

Dave DanaDave
> I did a system in costal Costa Rica right after Y2K flopped with equipment
> previously  installed for the same in Colorado.
> Despite a concrete building with screened windows we had geckos galore
> getting into the Trace SW4024 inverters. As the geckos got fried & died
> they turned acidic on the circuit boards creating an even bigger problem
> for the electronics.
> I would suggest sealed conditioned building or marine or totally sealed
> equipment.
>
> ----------------------------------------------------------------------------
> Dana Orzel                       Great Solar Works, Inc.
> 208.721.7003                       dana at solarwork.com
> Idaho Contractor - # 028765          Idaho PV # 028374
> NABCEP # 051112-136                       www.solarwork.biz
> "Responsible Technologies for Responsible People since 1988"
>  Please consider the environment before printing this email.
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>
> -----Original Message-----
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
> Behalf Of Jay
> Sent: Friday, September 01, 2017 6:04 PM
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Subject: Re: [RE-wrenches] Dusty off -grid conditions
>
> Hi William
>
> Sounds like Baja.
>
> With such limited details, I'd consider conditioned space via AC unit.
> It would keep the batteries cool, inverter, CC, and ancillary units dust
> free. Then you can use the equipment you want.
>
> But if that isn't an option, the XW series has a much better design for
> dust. The fan doesn't blow across the power electrics, but behind it over
> the transformer and FET heat sink.
>
> Jay
>
> Peltz power.
>
>
>> On Sep 1, 2017, at 11:41 AM, William Miller <william at millersolar.com>
>> wrote:
>>
>> Friends:
>>
>> I am designing an off-grid system that will be in a pretty dusty
>> environment. The inverter was going to be a Radian 8 K.
>>
>> Have any of you successfully mitigated dust problems with design
>> features?
>>
>> What inverters might someone suggest?  Sealed units?  The environment is
>> also hot.
>>
>> Thanks in advance.
>>
>> William Miller
>> _________________
>>
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Dave Angelini Offgrid Solar
"we go where powerlines don't"
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