Re: [RE-wrenches] DC-DC converter question

[Darryl Thayer]

This may seem odd but it worked, i used a Morningstar Prostar MPPT when i
needed to do 24 v system to 12 volt loads.  I could set the output voltage
it had very low tare

On Dec 19, 2017 12:29 AM, "Sindelar Solar"  wrote:

> Wrenches,
> The time has come to upgrade a longtime client's 1985 12V system and
> original Trace 1512 inverter. The inverter still works fine after 32 years
> of continuous operation, but 12V is too limited to allow much expansion.
> The power system has numerous 12V loads - mostly lighting throughout the
> home, as the 12V SunFrost fridge will also be replaced, so a 24-12
> step-down DC-DC converter is part of the upgrade.
>
> Is there any reason that I shouldn't use a Mean Well RSD-300B-12 (
> https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf) wouldn't fill the
> bill? I'm familiar with this brand, as they were used for years by Array
> Technologies to step down voltage to run tracker drives, and I have never
> known (or heard of on this list) of a failure. The price is right too at a
> bit over $100.
>
> Any reviews, cautions, or other recommendations?
> Thank you,
> Allan
> --
>
> *Allan Sindelar*
> al...@sindelarsolar.com 
> NABCEP Certified PV Installation Professional
> New Mexico EE98J Journeyman Electrician
> Founder (Retired), Positive Energy, Inc.
> *505 780-2738 cell*
>
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Re: [RE-wrenches] SolarEdge change over with SunPower Modules??

[August Goers]

Tom - I was just asking a SunPower rep about this. My understanding is that
a PID (Potential Induced Degredation) discharge device is required to use
SunPower positively grounded modules with a transformerless inverter. These
are expensive and not listed for the US market. Long story short, I don't
think you can do it. You need to find a transformer based inverter for your
project if you're going to stick with those modules. There is a company or
two selling refurbished Sunny Boys on the market.

August

On Tue, Dec 19, 2017 at 6:15 AM, Tom Lane  wrote:

> I have a Postive grounded SunPower System with two private labeled SMA 6000
> watt Inverters installed in 2009 and want to use SolarEdge 7600 and their
> optimizers at least for half the array ?  Modules are SunPower 210 watt
> modules -  how do I work this out ? GatorTom PS : 48 modules ground mounted
> in two arrays of 24 modules . Thanks
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Re: [RE-wrenches] Concrete Tile Roof Solar Installation - Oregon - Engineering requirements

[August Goers]

Kirpal,

Specialized structural engineering really shouldn't be required for a
standard flush mount tile project. If it is, I have a few PE structural
contacts who typically do this kind of work for closer to $200, contact me
off list if you're interested.

Secondly, I agree with William to be weary of tile roofs! The biggest issue
we've found besides fragile tile is worn underlayment. The underlayment,
typically felt paper, needs to be in good condition or the roof will leak
sooner or later. Assessing roof age really helps to get an idea of how the
underlayment might be. Anything over 10 years old should be inspected by a
roofer. The best bet is to have a roofer waterproof your stanchions.

August


*August Goers*

Luminalt Energy Corporation


On Tue, Dec 19, 2017 at 9:54 AM, Jerry Shafer 
wrote:

> Fellow Wrenches
> Some time back we were doing concrete tile install all the time. We
> approched it somewhat different. We removed all the tiles on the area for
> the array, preped the area and installed installed comp with quick mount
> afterwords we reinstalled the tile around the modules. The profile was far
> better, overall look was better and we will never get a cracked tile under
> the array cause a leak. We did not need any engineering on this either as
> we reduced the loading by installing modules.
> Jerry
>
> On Dec 19, 2017 6:53 AM, "William Miller"  wrote:
>
> > Kirpal:
> >
> > It seems to me this is a matter of defining "Flush-mount."  I would call
> > any installation where-in the panels are within the perimeter of the
> roof,
> > parallel with the surface and not more than 10 or so inches from the
> > surface of the roofing material a flush-mount.  A proper tile roof
> > installation satisfies this and should be allowed without engineering.
> >
> > Here in smoky California we have lots of tile roofs.  We have tried or
> > reviewed all of the tile mount solutions.  We rejected Quickmount as
> > poorly designed and fabricated.  The posts are hollow and the threads
> fail
> > much too easily.  Hooks are out of the question for lack of uplift
> > resistance.  Snap-N-Rack posts and flashings are too weakly built and
> > don't look like they will seal well. Our preferred roofer rejected them.
> >
> > We settled on the robust DPW "Power Post" stanchions with two levels of
> > flashing.  On these we set Snap-n-Rack 100 series rail.  The Power Posts
> > are solid aluminum and allow two lags.  However DPW had such a huge lead
> > time for Power Posts that we tooled up to fabricate our own.  You could
> > check with DPW or Solar Rack Works.
> >
> > The biggest weatherproofing complexity is the sub-roof--the paper under
> > the tile.  It is the actual rain barrier while the tile is the UV barrier
> > and aesthetic treatment.  Over time, the sub-roof will become brittle.
> It
> > is fine as long as you don't touch it.  We try to never rely on caulk for
> > the rain barrier and caulk won't stick to old sub-roof anyway.  Instead
> we
> > lap good quality paper under the next layer above and over the flashing
> > below.  This means we would be lifting the existing paper and it tears.
> > Therefore we have a licensed roofer remove tile from eave-to-ridge and
> > rake-to-rake and install new sub-roof.  We use Oatey 11830 flashings over
> > Power Posts, overlapping each course of paper.  This requires some short
> > courses, but felt is cheap.  Over the tile we use a wide base galvanized
> > flashing interleaved with flat tile or wide based aluminum flashing with
> > curved tile.  The roofer replaces the tile after we set stanchions.
> >
> > The licensed roofer adds thousands of dollars to any tile job but without
> > this process a roof leak is likely.  I figure a roof leak could cost tens
> > of thousands of dollars so the arithmetic is pretty easy.
> >
> > By the way, these are trade secrets so don't tell anyone.
> >
> > William Miller
> >
> >
> > Lic 773985
> > millersolar.com
> > 805-438-5600
> >
> > -Original Message-
> > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
> > Behalf Of Kirpal
> > Sent: Tuesday, December 19, 2017 7:26 AM
> > To: RE-wrenches
> > Subject: [RE-wrenches] Concrete Tile Roof Solar Installation - Oregon -
> > Engineering requirements
> >
> > Hi Folks!  We don't get many jobs installing solar on concrete tile
> > roofsthere aren't many around here.  In Oregon we are allowed to do
> an
> > engineer-less installation on metal and comp roofs when the array is
> flush
> > mounted to the roof.  Concrete tile roofs don't fit into this scenario.
> > My engineer quoted me $650 for a report authorizing the installation.
> > Seems like this is way too expensive for a modest 5kW system.  What are
> > others doing for concrete tile roof installs.  Engineering required?  We
> > usually use SnapNRack as our racking system.  (will probably use
> > QuickMount Tile Replacement Flashings for this project)  Other 

Re: [RE-wrenches] DC-DC converter question

[Kevin Pegg]

We have just received some product from solar converters. I don't believe they 
are out of business. 

We use their 48-12V converters frequently for situations like this. Lower idle 
loads and higher efficiency than using a 12V power supply from Iota or others. 

Though have had a couple failures of these converters in recent years. 

Kevin

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of Roy Butler
Sent: December-19-17 6:15 AM
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] DC-DC converter question

FYI.It appears that Solar Converters may be out of business.

Roy Butler
Four Winds Renewable Energy, LLC
8902 Route 46, Arkport, NY 14807
607-324-9747  www.four-winds-energy.com

Check out the 14th Annual Small Wind Conference A Gathering of Installers, 
Manufacturers, Dealers, & Distributors April 9-10, 2018 Twin Cities, MN 
www.smallwindconference.com

Although no trees were killed in the sending of this message, a large number of 
electrons were terribly inconvenienced.

 

On 12/19/2017 7:28 AM, solar1onl...@charter.net wrote:
> Allen, John, et al,
> Aren't DC-DC converters a mainstay of Solar Converters, Inc. product 
> line?
> Just to toss another manufacturer into the mix.
> Stay warm, stay safe,
> Bill Loesch
> Solar 1 - Saint Louis Solar
> 314 631 1094
>
>   -From: "John Blittersdorf"
> To: "RE-wrenches"
> Cc:
> Sent: 19-Dec-2017 11:54:47 +
> Subject: Re: [RE-wrenches] DC-DC converter question
>
>   Allan,
>   I have used the Mean-well converters several times and have had good
>   luck. My other choice would be an Iota but definitely more expensive.
>
>   John Blittersdorf
>   Rob Stubbins Solar
>
>   On Tue, Dec 19, 2017 at 1:29 AM Sindelar Solar
>   wrote:
>
>   > Wrenches,
>   > The time has come to upgrade a longtime client's 1985 12V system 
> and
>   > original Trace 1512 inverter. The inverter still works fine after
> 32
>   > years of continuous operation, but 12V is too limited to allow much
>   > expansion. The power system has numerous 12V loads - mostly 
> lighting
>   > throughout the home, as the 12V SunFrost fridge will also be 
> replaced,
>   > so a 24-12 step-down DC-DC converter is part of the upgrade.
>   >
>   > Is there any reason that I shouldn't use a Mean Well RSD-300B-12
>   > (https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf) [1] wouldn't 
> fill the
>   > bill? I'm familiar with this brand, as they were used for years by 
> Array
>   > Technologies to step down voltage to run tracker drives, and I have
>   > never known (or heard of on this list) of a failure. The price is 
> right
>   > too at a bit over $100.
>   >
>   > Any reviews, cautions, or other recommendations?
>   > Thank you,
>   > Allan
>   > --
>   >
>   > *Allan Sindelar*
>   > al...@sindelarsolar.com
>   > NABCEP Certified PV Installation Professional
>   > New Mexico EE98J Journeyman Electrician
>   > Founder (Retired), Positive Energy, Inc.
>   > *505 780-2738 cell*
>   >
>   > ___
>   > List sponsored by Redwood Alliance
>   >
>   > List Address: RE-wrenches@lists.re-wrenches.org
>   >
>   > Change listserver email address & settings:
>   >  >
>   > List rules & etiquette:
>   > www.re-wrenches.org/etiquette.htm
>   >
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>   > www.members.re-wrenches.org
>   >
>   >
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>
>   
>
> Links:
> --
> [1] https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf)
>
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Change 

Re: [RE-wrenches] Concrete Tile Roof Solar Installation - Oregon - Engineering requirements

[Jerry Shafer]

Fellow Wrenches
Some time back we were doing concrete tile install all the time. We
approched it somewhat different. We removed all the tiles on the area for
the array, preped the area and installed installed comp with quick mount
afterwords we reinstalled the tile around the modules. The profile was far
better, overall look was better and we will never get a cracked tile under
the array cause a leak. We did not need any engineering on this either as
we reduced the loading by installing modules.
Jerry

On Dec 19, 2017 6:53 AM, "William Miller"  wrote:

> Kirpal:
>
> It seems to me this is a matter of defining "Flush-mount."  I would call
> any installation where-in the panels are within the perimeter of the roof,
> parallel with the surface and not more than 10 or so inches from the
> surface of the roofing material a flush-mount.  A proper tile roof
> installation satisfies this and should be allowed without engineering.
>
> Here in smoky California we have lots of tile roofs.  We have tried or
> reviewed all of the tile mount solutions.  We rejected Quickmount as
> poorly designed and fabricated.  The posts are hollow and the threads fail
> much too easily.  Hooks are out of the question for lack of uplift
> resistance.  Snap-N-Rack posts and flashings are too weakly built and
> don't look like they will seal well. Our preferred roofer rejected them.
>
> We settled on the robust DPW "Power Post" stanchions with two levels of
> flashing.  On these we set Snap-n-Rack 100 series rail.  The Power Posts
> are solid aluminum and allow two lags.  However DPW had such a huge lead
> time for Power Posts that we tooled up to fabricate our own.  You could
> check with DPW or Solar Rack Works.
>
> The biggest weatherproofing complexity is the sub-roof--the paper under
> the tile.  It is the actual rain barrier while the tile is the UV barrier
> and aesthetic treatment.  Over time, the sub-roof will become brittle.  It
> is fine as long as you don't touch it.  We try to never rely on caulk for
> the rain barrier and caulk won't stick to old sub-roof anyway.  Instead we
> lap good quality paper under the next layer above and over the flashing
> below.  This means we would be lifting the existing paper and it tears.
> Therefore we have a licensed roofer remove tile from eave-to-ridge and
> rake-to-rake and install new sub-roof.  We use Oatey 11830 flashings over
> Power Posts, overlapping each course of paper.  This requires some short
> courses, but felt is cheap.  Over the tile we use a wide base galvanized
> flashing interleaved with flat tile or wide based aluminum flashing with
> curved tile.  The roofer replaces the tile after we set stanchions.
>
> The licensed roofer adds thousands of dollars to any tile job but without
> this process a roof leak is likely.  I figure a roof leak could cost tens
> of thousands of dollars so the arithmetic is pretty easy.
>
> By the way, these are trade secrets so don't tell anyone.
>
> William Miller
>
>
> Lic 773985
> millersolar.com
> 805-438-5600
>
> -Original Message-
> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
> Behalf Of Kirpal
> Sent: Tuesday, December 19, 2017 7:26 AM
> To: RE-wrenches
> Subject: [RE-wrenches] Concrete Tile Roof Solar Installation - Oregon -
> Engineering requirements
>
> Hi Folks!  We don't get many jobs installing solar on concrete tile
> roofsthere aren't many around here.  In Oregon we are allowed to do an
> engineer-less installation on metal and comp roofs when the array is flush
> mounted to the roof.  Concrete tile roofs don't fit into this scenario.
> My engineer quoted me $650 for a report authorizing the installation.
> Seems like this is way too expensive for a modest 5kW system.  What are
> others doing for concrete tile roof installs.  Engineering required?  We
> usually use SnapNRack as our racking system.  (will probably use
> QuickMount Tile Replacement Flashings for this project)  Other Oregon
> installers - any advice on this hurdle?  Not worried about the technical
> installation just the cost and formality of getting an engineers stamp for
> permits.
> Thanks in advance!
>
> Sunny Regards,
> Kirpal Khalsa
> Oregon LRT#25
> NABCEP Certified PV Installation Professional Oregon Solarworks LLC
> www.oregonsolarworks.com
> 541-299-0402
> ___
> List sponsored by Redwood Alliance
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> Change 

Re: [RE-wrenches] Concrete Tile Roof Solar Installation - Oregon - Engineering requirements

[William Miller]

Kirpal:

It seems to me this is a matter of defining "Flush-mount."  I would call
any installation where-in the panels are within the perimeter of the roof,
parallel with the surface and not more than 10 or so inches from the
surface of the roofing material a flush-mount.  A proper tile roof
installation satisfies this and should be allowed without engineering.

Here in smoky California we have lots of tile roofs.  We have tried or
reviewed all of the tile mount solutions.  We rejected Quickmount as
poorly designed and fabricated.  The posts are hollow and the threads fail
much too easily.  Hooks are out of the question for lack of uplift
resistance.  Snap-N-Rack posts and flashings are too weakly built and
don't look like they will seal well. Our preferred roofer rejected them.

We settled on the robust DPW "Power Post" stanchions with two levels of
flashing.  On these we set Snap-n-Rack 100 series rail.  The Power Posts
are solid aluminum and allow two lags.  However DPW had such a huge lead
time for Power Posts that we tooled up to fabricate our own.  You could
check with DPW or Solar Rack Works.

The biggest weatherproofing complexity is the sub-roof--the paper under
the tile.  It is the actual rain barrier while the tile is the UV barrier
and aesthetic treatment.  Over time, the sub-roof will become brittle.  It
is fine as long as you don't touch it.  We try to never rely on caulk for
the rain barrier and caulk won't stick to old sub-roof anyway.  Instead we
lap good quality paper under the next layer above and over the flashing
below.  This means we would be lifting the existing paper and it tears.
Therefore we have a licensed roofer remove tile from eave-to-ridge and
rake-to-rake and install new sub-roof.  We use Oatey 11830 flashings over
Power Posts, overlapping each course of paper.  This requires some short
courses, but felt is cheap.  Over the tile we use a wide base galvanized
flashing interleaved with flat tile or wide based aluminum flashing with
curved tile.  The roofer replaces the tile after we set stanchions.

The licensed roofer adds thousands of dollars to any tile job but without
this process a roof leak is likely.  I figure a roof leak could cost tens
of thousands of dollars so the arithmetic is pretty easy.

By the way, these are trade secrets so don't tell anyone.

William Miller


Lic 773985
millersolar.com
805-438-5600

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Kirpal
Sent: Tuesday, December 19, 2017 7:26 AM
To: RE-wrenches
Subject: [RE-wrenches] Concrete Tile Roof Solar Installation - Oregon -
Engineering requirements

Hi Folks!  We don't get many jobs installing solar on concrete tile
roofsthere aren't many around here.  In Oregon we are allowed to do an
engineer-less installation on metal and comp roofs when the array is flush
mounted to the roof.  Concrete tile roofs don't fit into this scenario.
My engineer quoted me $650 for a report authorizing the installation.
Seems like this is way too expensive for a modest 5kW system.  What are
others doing for concrete tile roof installs.  Engineering required?  We
usually use SnapNRack as our racking system.  (will probably use
QuickMount Tile Replacement Flashings for this project)  Other Oregon
installers - any advice on this hurdle?  Not worried about the technical
installation just the cost and formality of getting an engineers stamp for
permits.
Thanks in advance!

Sunny Regards,
Kirpal Khalsa
Oregon LRT#25
NABCEP Certified PV Installation Professional Oregon Solarworks LLC
www.oregonsolarworks.com
541-299-0402
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Re: [RE-wrenches] DC-DC converter question

[Jay]

I’ve used Iota or Powermax over the years for this exact situation with great 
reliability. 
Maybe today there are less expensive options?

Jay
Peltz power. 



> On Dec 19, 2017, at 6:15 AM, Roy Butler  wrote:
> 
> FYI.It appears that Solar Converters may be out of business.
> 
> Roy Butler
> Four Winds Renewable Energy, LLC
> 8902 Route 46, Arkport, NY 14807
> 607-324-9747  www.four-winds-energy.com
> 
> Check out the 14th Annual Small Wind Conference
> A Gathering of Installers, Manufacturers, Dealers, & Distributors
> April 9-10, 2018 Twin Cities, MN
> www.smallwindconference.com
> 
> Although no trees were killed in the sending of this message,
> a large number of electrons were terribly inconvenienced.
> 
>
>> On 12/19/2017 7:28 AM, solar1onl...@charter.net wrote:
>> Allen, John, et al,
>> Aren't DC-DC converters a mainstay of Solar Converters, Inc. product
>> line?
>> Just to toss another manufacturer into the mix.
>> Stay warm, stay safe,
>> Bill Loesch
>> Solar 1 - Saint Louis Solar
>> 314 631 1094
>> 
>>-From: "John Blittersdorf"
>> To: "RE-wrenches"
>> Cc:
>> Sent: 19-Dec-2017 11:54:47 +
>> Subject: Re: [RE-wrenches] DC-DC converter question
>> 
>>  Allan,
>>  I have used the Mean-well converters several times and have had good
>>  luck. My other choice would be an Iota but definitely more expensive.
>> 
>>  John Blittersdorf
>>  Rob Stubbins Solar
>> 
>>  On Tue, Dec 19, 2017 at 1:29 AM Sindelar Solar
>>  wrote:
>> 
>>  > Wrenches,
>>  > The time has come to upgrade a longtime client's 1985 12V system
>> and
>>  > original Trace 1512 inverter. The inverter still works fine after
>> 32
>>  > years of continuous operation, but 12V is too limited to allow much
>>  > expansion. The power system has numerous 12V loads - mostly
>> lighting
>>  > throughout the home, as the 12V SunFrost fridge will also be
>> replaced,
>>  > so a 24-12 step-down DC-DC converter is part of the upgrade.
>>  >
>>  > Is there any reason that I shouldn't use a Mean Well RSD-300B-12
>>  > (https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf) [1] wouldn't
>> fill the
>>  > bill? I'm familiar with this brand, as they were used for years by
>> Array
>>  > Technologies to step down voltage to run tracker drives, and I have
>>  > never known (or heard of on this list) of a failure. The price is
>> right
>>  > too at a bit over $100.
>>  >
>>  > Any reviews, cautions, or other recommendations?
>>  > Thank you,
>>  > Allan
>>  > --
>>  >
>>  > *Allan Sindelar*
>>  > al...@sindelarsolar.com
>>  > NABCEP Certified PV Installation Professional
>>  > New Mexico EE98J Journeyman Electrician
>>  > Founder (Retired), Positive Energy, Inc.
>>  > *505 780-2738 cell*
>>  >
>>  > ___
>>  > List sponsored by Redwood Alliance
>>  >
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>>  >
>>  > Change listserver email address & settings:
>>  >  >
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>>  > www.members.re-wrenches.org
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>>  >
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>>  
>> Links:
>> --
>> [1] https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf)
>> 
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List rules & 

[RE-wrenches] SolarEdge change over with SunPower Modules??

[Tom Lane]

I have a Postive grounded SunPower System with two private labeled SMA 6000
watt Inverters installed in 2009 and want to use SolarEdge 7600 and their
optimizers at least for half the array ?  Modules are SunPower 210 watt
modules -  how do I work this out ? GatorTom PS : 48 modules ground mounted
in two arrays of 24 modules . Thanks
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[RE-wrenches] Concrete Tile Roof Solar Installation - Oregon - Engineering requirements

[Kirpal]

Hi Folks!  We don't get many jobs installing solar on concrete tile
roofsthere aren't many around here.  In Oregon we are allowed to do an
engineer-less installation on metal and comp roofs when the array is flush
mounted to the roof.  Concrete tile roofs don't fit into this scenario.  My
engineer quoted me $650 for a report authorizing the installation.  Seems
like this is way too expensive for a modest 5kW system.  What are others
doing for concrete tile roof installs.  Engineering required?  We usually
use SnapNRack as our racking system.  (will probably use QuickMount Tile
Replacement Flashings for this project)  Other Oregon installers - any
advice on this hurdle?  Not worried about the technical installation just
the cost and formality of getting an engineers stamp for permits.
Thanks in advance!

Sunny Regards,
Kirpal Khalsa
Oregon LRT#25
NABCEP Certified PV Installation Professional
Oregon Solarworks LLC
www.oregonsolarworks.com
541-299-0402
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Re: [RE-wrenches] DC-DC converter question

[Roy Butler]

FYI.It appears that Solar Converters may be out of business.

Roy Butler
Four Winds Renewable Energy, LLC
8902 Route 46, Arkport, NY 14807
607-324-9747  www.four-winds-energy.com

Check out the 14th Annual Small Wind Conference
A Gathering of Installers, Manufacturers, Dealers, & Distributors
April 9-10, 2018 Twin Cities, MN
www.smallwindconference.com

Although no trees were killed in the sending of this message,
a large number of electrons were terribly inconvenienced.




On 12/19/2017 7:28 AM, solar1onl...@charter.net wrote:

Allen, John, et al,
Aren't DC-DC converters a mainstay of Solar Converters, Inc. product
line?
Just to toss another manufacturer into the mix.
Stay warm, stay safe,
Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094

-From: "John Blittersdorf"
To: "RE-wrenches"
Cc:
Sent: 19-Dec-2017 11:54:47 +
Subject: Re: [RE-wrenches] DC-DC converter question

  Allan,
  I have used the Mean-well converters several times and have had good
  luck. My other choice would be an Iota but definitely more expensive.

  John Blittersdorf
  Rob Stubbins Solar

  On Tue, Dec 19, 2017 at 1:29 AM Sindelar Solar
  wrote:

  > Wrenches,
  > The time has come to upgrade a longtime client's 1985 12V system
and
  > original Trace 1512 inverter. The inverter still works fine after
32
  > years of continuous operation, but 12V is too limited to allow much
  > expansion. The power system has numerous 12V loads - mostly
lighting
  > throughout the home, as the 12V SunFrost fridge will also be
replaced,
  > so a 24-12 step-down DC-DC converter is part of the upgrade.
  >
  > Is there any reason that I shouldn't use a Mean Well RSD-300B-12
  > (https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf) [1] wouldn't
fill the
  > bill? I'm familiar with this brand, as they were used for years by
Array
  > Technologies to step down voltage to run tracker drives, and I have
  > never known (or heard of on this list) of a failure. The price is
right
  > too at a bit over $100.
  >
  > Any reviews, cautions, or other recommendations?
  > Thank you,
  > Allan
  > --
  >
  > *Allan Sindelar*
  > al...@sindelarsolar.com
  > NABCEP Certified PV Installation Professional
  > New Mexico EE98J Journeyman Electrician
  > Founder (Retired), Positive Energy, Inc.
  > *505 780-2738 cell*
  >
  > ___
  > List sponsored by Redwood Alliance
  >
  > List Address: RE-wrenches@lists.re-wrenches.org
  >
  > Change listserver email address & settings:
  >  >
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Links:
--
[1] https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf)

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Re: [RE-wrenches] DC-DC converter question

[solar1online]

Allen, John, et al,
Aren't DC-DC converters a mainstay of Solar Converters, Inc. product
line? 
Just to toss another manufacturer into the mix.
Stay warm, stay safe,
Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094

-From: "John Blittersdorf" 
To: "RE-wrenches"
Cc: 
Sent: 19-Dec-2017 11:54:47 +
Subject: Re: [RE-wrenches] DC-DC converter question

 Allan,
 I have used the Mean-well converters several times and have had good
 luck. My other choice would be an Iota but definitely more expensive.

 John Blittersdorf
 Rob Stubbins Solar

 On Tue, Dec 19, 2017 at 1:29 AM Sindelar Solar 
 wrote:

 > Wrenches,
 > The time has come to upgrade a longtime client's 1985 12V system
and
 > original Trace 1512 inverter. The inverter still works fine after
32
 > years of continuous operation, but 12V is too limited to allow much
 > expansion. The power system has numerous 12V loads - mostly
lighting
 > throughout the home, as the 12V SunFrost fridge will also be
replaced,
 > so a 24-12 step-down DC-DC converter is part of the upgrade.
 >
 > Is there any reason that I shouldn't use a Mean Well RSD-300B-12
 > (https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf) [1] wouldn't
fill the
 > bill? I'm familiar with this brand, as they were used for years by
Array
 > Technologies to step down voltage to run tracker drives, and I have
 > never known (or heard of on this list) of a failure. The price is
right
 > too at a bit over $100.
 >
 > Any reviews, cautions, or other recommendations?
 > Thank you,
 > Allan
 > --
 >
 > *Allan Sindelar*
 > al...@sindelarsolar.com 
 > NABCEP Certified PV Installation Professional
 > New Mexico EE98J Journeyman Electrician
 > Founder (Retired), Positive Energy, Inc.
 > *505 780-2738 cell*
 >
 > ___
 > List sponsored by Redwood Alliance
 >
 > List Address: RE-wrenches@lists.re-wrenches.org
 >
 > Change listserver email address & settings:
 >  >
 > List rules & etiquette:
 > www.re-wrenches.org/etiquette.htm
 >
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 > www.members.re-wrenches.org
 >
 >
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Links:
--
[1] https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf)

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Re: [RE-wrenches] DC-DC converter question

[John Blittersdorf]

Allan,
  I have used the Mean-well converters several times and have had good
luck.  My other choice would be an Iota but definitely more expensive.

John Blittersdorf
Rob Stubbins Solar

On Tue, Dec 19, 2017 at 1:29 AM Sindelar Solar 
wrote:

> Wrenches,
> The time has come to upgrade a longtime client's 1985 12V system and
> original Trace 1512 inverter. The inverter still works fine after 32
> years of continuous operation, but 12V is too limited to allow much
> expansion. The power system has numerous 12V loads - mostly lighting
> throughout the home, as the 12V SunFrost fridge will also be replaced,
> so a 24-12 step-down DC-DC converter is part of the upgrade.
>
> Is there any reason that I shouldn't use a Mean Well RSD-300B-12
> (https://www.trcelectronics.com/ecomm/pdf/rsd300.pdf) wouldn't fill the
> bill? I'm familiar with this brand, as they were used for years by Array
> Technologies to step down voltage to run tracker drives, and I have
> never known (or heard of on this list) of a failure. The price is right
> too at a bit over $100.
>
> Any reviews, cautions, or other recommendations?
> Thank you,
> Allan
> --
>
> *Allan Sindelar*
> al...@sindelarsolar.com 
> NABCEP Certified PV Installation Professional
> New Mexico EE98J Journeyman Electrician
> Founder (Retired), Positive Energy, Inc.
> *505 780-2738 cell*
>
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