Re: [RE-wrenches] Small PV system/experiment for kids

[Jason Szumlanski]

I'm actually doing that with Florida Gulf Coast University now. They have a
6-cart competition program. Good idea!

*Jason Szumlanski** *

*Fafco Solar
*


On Fri, Dec 14, 2012 at 11:56 AM, Solarguy  wrote:

> While it’s a little more involved, a solar car race can provide a full
> half day hands-on event. It involves gear ratios and hot glue guns so will
> clearly take some volunteers to help out with the kids. The race afterward
> will get the kids outdoors in the parking lot where local vendors can get
> involved by supplying prizes like gift cards for pizza etc. 
>
> http://www.solarmade.com/JuniorSprint.htm  has some high quality kits
> that may require some fundraising or parental participation. 
>
> We’ve had great success with this project over the years.
>
> ** **
>
> Jim Duncan
>
> North Texas Renewable Energy Inc
>
> www.ntrei.com 
>
> NABCEP PV 031310-57
>
> TECL-27398
>
> nt...@1scom.net 
>
> 817.917.0527
>
> ** **
>
> ** **
>
> ** **
>
> On Wed, Dec 12, 2012 at 9:08 AM, Jason Szumlanski 
> wrote:
>
> I have been approached by a local elementary school to develop a very
> small PV related experiment or system that is appropriate for children aged
> 9-11. Not having kids myself, I have no idea where to start with this. They
> are fine with mounting a PV panel on the roof, wall, or ground. They want
> something interesting and/or interactive that the students can monitor over
> time.
>
> ** **
>
> Has anyone done something like this that would be suitable?
>
> ** **
>
> Jason Szumlanski
>
> Fafco Solar
>
> ** **
>
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Re: [RE-wrenches] KC-120-1 recall contact

[Chris]

Thanks all, as Rae is on it!

 

Sincerely,

Chris Worcester

Solar Wind Works
NABCEP Certified PV Installer
Phone: 530-582-4503
Fax: 530-582-4603
www.solarwindworks.com  
ch...@solarwindworks.com
"Proven Energy Solutions"

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry
Crutcher, Starlight Solar Power Systems
Sent: Friday, December 14, 2012 7:33 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] KC-120-1 recall contact

 

Chris,

 

It used to be Amie but now you need to contact Rae Parafiniuk
. She takes care of the warranty claims. FYI,
you should replace ALL the modules.


Larry Crutcher

Starlight Solar Power Systems

 





 

On Dec 13, 2012, at 1:49 PM, Stephen Kane wrote:





Chris,

 

The last time I handled this issue the contact was:

 

amie.eb...@kyocera.com

Purchasing Agent / Warranty Analyst

KYOCERA Solar, Inc.

7812 E. Acoma Drive

Scottsdale, AZ 85260

Direct (480) 443-0817

 

I assume a call to the main Kyocera # in Arizona will also get you where you
need to go.

 

 

Best,

 

Stephen Kane

Kane Solar

Lyons, CO

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Chris
Sent: Thursday, December 13, 2012 1:12 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] bubbling Sanyo modules

 

Hi Larry,

We were just called out to an offgrid system that has the Kyocera 120-1's
with the 2001.5 date on them. 10 out of 16 appear to have burned
contacts/traces on them. Who is the contact or go to person on this at
Kyocera?

 

Sincerely,

Chris Worcester

Solar Wind Works
NABCEP Certified PV Installer
Phone: 530-582-4503
Fax: 530-582-4603
www.solarwindworks.com  
ch...@solarwindworks.com
"Proven Energy Solutions"

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry
Crutcher, Starlight Solar Power Systems
Sent: Wednesday, December 05, 2012 8:02 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] bubbling Sanyo modules

 

boB,

 

If the cells are still "capable" of 80% or more but a defect is in cell
interconnection, junction box or whatever is preventing output, then the
power warranty does not apply. 

 

Example: The 1999 through 2002 Kyocera KC120-1's have been failing in the
thousands. A poorly soldered contact opens and 1/2 the module stops passing
power (Voc 10.5 V). To date, Kyocera is still exchanging these with
remanufactured units without any legal liability to do so. They even pay us
the labor to replace them more than 10 years out of warranty.  They have my
kudos for the way they are handling this.

 

A manufacturer will be on my sh!t list if they don't stand behind an obvious
production failure that is occurring in many modules. I hope this is not the
case with these Sanyo.


Larry Crutcher

Starlight Solar Power Systems

 

 

On Dec 5, 2012, at 12:03 AM, boB wrote:

 

On 12/4/2012 9:25 PM, benn kilburn wrote:

Doug,

While the module may be past its workmanship warranty period, if the defect
affects the module's power output then i would argue that the power
output warranty should cover it.  That warranty should be good for 25yrs.

Anyone care to comment on that reasoning?

 

benn



In a way, I don't quite understand the difference.

If a module plain old stops working because of workmanship or whatever,
isn't 0% of original output less than 80% of original output ??

boB

 

 

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Re: [RE-wrenches] Single axis tracker

[Ray Walters]

Array Technologies has a single axis tracker that can take quite a bit 
of up down variation, and you can smooth it out even more if needed by 
varying the heights of the mounting posts.

http://arraytechinc.com/duratrack-hz/flexible
I worked on a 25 Mw project with this equipment.  ATI is a solid company 
that has been doing tracking right for decades.


Ray Walters

On 12/15/2012 10:59 AM, Bill Turberville wrote:

Does anyone have suggestions for a 50KW single axis tracker system.
This is going on top of a berm that does not run east-west.




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[RE-wrenches] Single axis tracker

[Bill Turberville]

Does anyone have suggestions for a 50KW single axis tracker system.
This is going on top of a berm that does not run east-west.

Sent from my iPad
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Re: [RE-wrenches] Commercial design predicament

[penobscotsolar]

Thanks for the reply guys. Yes, the utility is saying that it will be at
the customers cost run three phase that mile or so. It is prohibitively
expensive with the clients business plan. My thought is that multiple
smaller, single ph inverters could be used to then tie into a transformer
which would up the single phase voltage to 7200 volts. This would be a
current of less than 80 amps. The utility says the existing (single phase)
lines out to the site can handle the current of a 500 kW solar farm. I
will need to find the proper transformer(s), of course, if they exist.
Using multiple smaller inverters would likely make the tie in to that
transformer easier (or at least smaller wire sizing)
Just my thoughts. I haven't given up yet

Daryl


> Daryl,
> I don't think there's a practical way to make this work either. If you
> were
> adding a 500kW load to that site, the utility would gladly bring out a
> three-phase transmission line with an appropriate transformer.
> Unfortunately, for a solar farm, the utility probably wouldn't be willing
> to do that for free and would require three-phase service-- even though
> it's technically possible with a big batch of 10kW 1P inverters.
> Unfortunately, running the line that mile out to you could be a few
> hundred
> thousand dollars. It's worth checking with the utility, but I'd guess
> you'd
> have to pay for the extra mile of 3P distribution line.
>
> Dave
>
>
> On Fri, Dec 14, 2012 at 10:12 AM,  wrote:
>
>> Hello fellow wrenches,
>>I am hoping someone here has come across this before and might have a
>> suggestion or two for us. I have a client who has a large piece of land
>> and the financing for a 500 kw solar "farm" in Maine. The predicament I
>> am in is that the closest three phase primary is more than a mile away.
>> The existing single phase, 7200 volt lines to the three phase portion
>> of the grid could easily handle the -80 amps extra load coming onto it
>> from the central inverters, it is just that I cannot find, anywhere, a
>> practical way to make this work, that is, converting the three phase
>> output of the central inverter(s)(480v) to the requirement for the grid
>> (7200 v single phase). Any ideas?? Suggestions?
>>
>> Thank you,
>> Daryl DeJoy
>> NABCEP Certified PV installer
>> Penobscot Solar Design
>>
>>
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Re: [RE-wrenches] Commercial design predicament

[Dave Click]

Daryl,
I don't think there's a practical way to make this work either. If you were
adding a 500kW load to that site, the utility would gladly bring out a
three-phase transmission line with an appropriate transformer.
Unfortunately, for a solar farm, the utility probably wouldn't be willing
to do that for free and would require three-phase service-- even though
it's technically possible with a big batch of 10kW 1P inverters.
Unfortunately, running the line that mile out to you could be a few hundred
thousand dollars. It's worth checking with the utility, but I'd guess you'd
have to pay for the extra mile of 3P distribution line.

Dave


On Fri, Dec 14, 2012 at 10:12 AM,  wrote:

> Hello fellow wrenches,
>I am hoping someone here has come across this before and might have a
> suggestion or two for us. I have a client who has a large piece of land
> and the financing for a 500 kw solar "farm" in Maine. The predicament I
> am in is that the closest three phase primary is more than a mile away.
> The existing single phase, 7200 volt lines to the three phase portion
> of the grid could easily handle the -80 amps extra load coming onto it
> from the central inverters, it is just that I cannot find, anywhere, a
> practical way to make this work, that is, converting the three phase
> output of the central inverter(s)(480v) to the requirement for the grid
> (7200 v single phase). Any ideas?? Suggestions?
>
> Thank you,
> Daryl DeJoy
> NABCEP Certified PV installer
> Penobscot Solar Design
>
>
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