[RE-wrenches] DC to DC converters

[Jerry Shafer]

Wrenches
Well i agree with every one, tha Samlex is great, morning atar charge
controllers again grean, and the question about the operating volts also
great, l have done stuff very close and the battery volts may have a wide
range
Jerry
On Mar 28, 2016 12:47 PM, "Ray Walters" <ray at solarray.com> wrote:

> What about building a 30 vdc system (5 x 6v batteries in series)  and
> adjust the settings on a Midnite Classic to work with that?  How tight does
> the 30 vdc output need to be?
>
> On inverters, I've had  trouble with the Suresine, basically not working
> with GFCI outlets.
> I keep trying different models of GFCIs, but they keep randomly tripping
> on 2 different systems.
> Morningstar's list of "approved" GFCIs doesn't list any currently
> manufactured models, while calls to their tech support yields "Oh, that
> shouldn't be a problem, it should work with all GFCIs..."
> Way too many free trips out trying to fix this, so I may have to abandon
> GFCI protection, or replace the inverters.
> My suggestion for that small load: Exeltech 125.  Better than grid
> waveform, and I recently pulled one out of corroded outdoor enclosure
> almost 15 years old: it looked terrible, but was still working fine.  It
> would also be lower cost and fit in a smaller enclosure.
>
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer303 505-8760
>
> On 3/28/2016 2:24 PM, Dan Fink wrote:
>
> Hi William;
> 30VDC is kind of odd, but 36VDC is common. The folks at Solar Converters
> might be able to fix you up with a custom one, or perhaps 36V is within the
> sat unit's input range.
> As for the inverter, I've never gone wrong with the Morningstar SureSine.
> Slick little unit.
>
> Dan Fink
> Adjunct Professor of Solar Energy Technology, Ecotech Institute
> IREC Certified Instructor™ for:
> ~ PV Installation Professional
> ~ Small Wind Installer
> Executive Director, Buckville Energy
> NABCEP Registered Continuing Education Providers™
> 970.672.4342
>
>
>
> On Mon, Mar 28, 2016 at 1:44 PM, William Miller <william at millersolar.com>
> wrote:
>
>> Friends:
>>
>>
>>
>> I am designing a satellite data interface for a large off-grid system for
>> a state highway department facility.  We will be using the Outback Optics
>> data capabilities along with equipment manufactured by Control by Web.
>>
>>
>>
>> I’d like to run the satellite system on a battery power source so I can
>> hope to use it when we need it most, when the power is down.  We have a
>> separate 24 volt battery bank remaining from a previous generator control
>> system.  The satellite system operates on 30 VDC at 2 amps.
>>
>>
>>
>> My first choice is to find a DC to DC converter from nominal 24 volts.
>> Do any of you know of one that you could recommend?
>>
>>
>>
>> My second choice is to use a small inverter.  Can anyone suggest one at
>> this small wattage?  I don’t know how good the power supply is at rejecting
>> waveform distortion so I presume an inverter needs to be somewhat close to
>> a sine wave.
>>
>> Thanks in advance.
>>
>>
>>
>> William Miller
>>
>>
>>
>>
>>
>> [image: Gradient Cap_mini]
>> Lic 773985
>> millersolar.com <http://www.millersolar.com/>
>> 805-438-5600
>>
>>
>>
>
>
>
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