Re: [RE-wrenches] 1500V Meter
I've been using the Hioki dc clamp meter just fine on 1500vdc circuits. I only use it for DC, and it works fine. Roy Rakobitsch Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Mon, Oct 26, 2020, 14:22 Evan M wrote: > hey all, > anyone have any good recommendations on clamp meters rated up to or over > 1500Vdc? I had my eye on the Hioki unit but their fine print says you can > only go over 1000V if the circuit is isolated from the grid and isolated > from ground. Isolated from grid means I can't take operating voltage > readings under load (at least not with a transformerless inverter) and > isolated from ground means I can't use it with a larger transformer-based > inverter. anyone found a better unit out there without the fine print? > > thanks! > evan > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
Re: [RE-wrenches] Operating Voltages Outback RE High Capacity Battery
Using Optics, can you equate the voltage sag/ gen start command with a particular load? Or is the voltage dropping quite evenly over the course of the night? They could actually be degraded if there is no indication of a sudden load/ voltage drop. A simple load test when on site can also help you replicate and/or get a better picture of whats going on. Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Fri, Apr 19, 2019 at 12:27 PM Mac Lewis wrote: > Hello Wrenches, > > We recently inherited an Outback system that I've been keeping an eye on > via Optics. Its a dual stack 3648 VFXR, with about 4kW of PV with a single > string of EnergyCell 1100RE battery bank (reported to be ~6 months old) > ~.46 kWh at C20. > > I have been observing how the system functions and how the voltage > behaves. We keep getting 2 minute voltage starts on the generator in the > middle of the night that don't seem necessary judging from how much energy > has been used from the battery bank. I am hesitant to tweak anything > because these battery set-points are a bit different than I'm used to. > > As per Outback: > Absorb Voltage is 55.6V for 2 hours > Float Voltage is 54.0V > > I've slowly been dropping the 2 minute start voltage to see if there is a > bottom, but I'm hesitant to take it much lower (maybe I should). > 2 minute start voltage: 44.8 V. > > > The system easily charges the battery bank to 100% (and easily reached the > 2 hr absorb time) every day. The flexnet DC is correctly set up and > calibrated. > > The load on the system is pretty consistent. They use between 400 and > 600W throughout the night. > > An average night, they may use about 6 kWh before the voltage sags below > the 2 minute start voltage and it starts the generator. > > Just curious if our 2 minute voltage needs to be dropped or if these > batteries are degraded. What corrective changes can I make to get better > performance? > > I have and will call Outback about this, but I'd like other perspectives > as well. > > Thanks as always for your expertise > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Outback OpticsRE and FlexNet DC shunts monitoring question
Dan, you certainly can graph individual shunts in OpticsRE. They are located under the "Battery" tab, lower left from the main dashboard. By default, the shunts (i believe) are labeled A, B and C respectively, but you can name them anything you like. I suggest "Inverter" for A, "PV" for B and "Wind" for C. If you have the shunts wired correctly as per the FNDC manual, power through the shunts will add and subtract and net the correct values (as long as you are using the appropriate resistance shunts (and the sense wires are oriented in the correct polarity as per the manual). If you are using a backup AC generator and it is being utilized through the inverters charger, then shunt A will reflect the values in either direction (both charge and discharge, to and from the battery bank). Aside from calling Outback, you can catch me off list and I can explain. I also second Johns comment about the quality of internet connection, its quite important for Optics to get good data into the database, especially if you are writing any parameters to the equipment. Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Fri, Mar 16, 2018 at 9:43 PM, Dan Fink wrote: > Esteemed Wrenches; > > We recently installed OpticsRE monitoring for an existing off-grid site in > Southern Colorado. It is 24v battery bank, 2.2kW PV, 2 Outback Flexmax 60 > controllers, nice old Trace SW inverter, and new wind turbine + controller > to replace a failed Whisper 200 with worn out furl and yaw bushings. > > We installed a FlexMaxDC shunt monitor into the Outback Hub, with the old > TriMetric shunt set as "inverter" and a new wind turbine shunt set as "wind" > > We removed the existing Bogart TriMetric and replaced it with the Mate 3s > and , everything is working fine for remote monitoring. But because the > Mate can't talk to the Trace inverter, it appears the PV input is > subtracting from the inverter output on that shunt. Thinking that moving > the PV input to the other side of the shunt will fix that, as the charge > controllers are talking to OpticsRE just fine. > > Questions: > > When the gasoline generator starts from low SOC (from the Trace SW relay) > will the FlexMaxDC Shunt A show a positive charging gain from the generator > or does FlexmaxDC only show one way (load or charge)? I don't see any way > of separating inverter load vs. generator gain. We will test this next > month down there, but it's 5 hours away, we just want to be prepared. > > Is there any way to graph the FlexMaxDC shunts on the main online > dashboard? They seem like a neglected child, only accessible by clicking > multiple menus, and just downloading data to a spreadsheet. The idea was to > show the client on a real-time graph how much the wind turbine is > contributing versus PV. > > For that main dashboard, we realize that without an Outback > inverter/charger, the graph will never show gasoline "generator" but if it > showed inverter loads as a gain, that would be enough. > > Still getting our heads wrapped around OpticsRE, but the setup and > commissioning was very easy, and it does work, after running a bunch of > CAT5 hardwired; Concrete/Adobe structure filled with remesh blocked all > efforts for wifi, The wifi router is located in the solar thermal room > downstairs (the ReSol monitoring works great on the thermal) and barely a > whiff of it upstairs at the electrical control roomOpticsRE seems to > need a pretty robust internet connection. > > Any thoughts appreciated, this is our first OpticsRE install. > > > > > Dan Fink > 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 > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Is there a charge controller do this?
I also do not believe the DC genset will be overloaded. It can be used (crudely) in a Bulk-only situation and be fine, as long as it shuts off when its supposed to, probably when charge current drops below a certain threshold (signalling that the batteries are becoming charged) or even on a timer based on bank capacity and load calculation. Its then important for the PV to finish the charging cycle for continued battery health. I know its not optimal, but can work well if set up properly. Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Sun, Jan 28, 2018 at 9:23 PM, Mac Lewis wrote: > Hello wrenches, > > I'm working on 3 off-grid telecom sites. They are designed to operate > solar only under most conditions but the project manager ordered a > custom-built 48 VDC generators, intended to be used as the battery > charger/backup power for the site. These are ~20 kW generators, and can > probably do about ~350Adc at 48 Vdc at the elevation that these are sited. > The battery banks are 4 x 1000 Ahr GS Nanocarbon 48 battery strings and can > gobble up the 350Adc easily when they are discharged. > > While discussing the generator operation with the generator supplier, we > have found this generator isn't capable of charge control, or limiting its > own output. The charge control functionality isn't necessary at this site > because we really just need it to keep things online until the sun returns, > a simple 54 VDC float voltage would work. However, without the generator > being able to self-limit its output, we expect this generator to stall when > started because it can't regulate its output current and will immediately > become overloaded by the discharged batteries. > > I am trying to come up with some options to rectify this serious design > issue. One idea that immediately came to mind was putting in some parallel > solar charge controllers between the DC generator output and the battery > bank. If the generator output could be dialed up to around 60-70 VDC, > could parallel solar charge controllers be used for charge regulation? It > would be kind of like charging a 48 V battery bank from a 70 V battery > bank. MPPT isn't applicable, could the max current limit in the charge > controller(s) be used to regulate charge rate? Will the charge controllers > blow up? If not, what brand might work. Each site has 8 x Midnite Classic > 150s but I'm open to other manufacturers if it would work. I am open to > blowing up a charge controller in the shop but I thought it best to ask > first. > > What are other ways to put this generator to use, and limit its load? > > > > Thanks for your input/comments > > > > > > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] 10 kW wind turbine
Hey Mac, Bergey Excel (10kw) and the Jacobs 3120 (20kw) are the only two decent machines I can recommend. They are both not without their minor issues, but all around, they work great as long as preventative maintenance is done. Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Mon, Mar 27, 2017 at 1:18 PM, Mac Lewis wrote: > Hi Wrenches, > > I am looking into largish (for me) wind turbines in the 10-20 kW size. As > of now Bergey seems to standout. Any other manufacturers that I should > take a close look at in this size turbine? > > Thanks > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Using same PV array for water pump, battery charging
Arcing would only happen when disconnecting pump during sunny periods, why not disconnect at dusk? Connecting pump will not arc due to soft start. Not sure about that particular charge controller, but some controllers can use Aux relay logic to do this upon full SOC. The Midnite Classic comes to mind. Swithcing can be done with contactor. Just a thought. Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Feb 16, 2017 4:24 PM, "Starlight Solar Power Systems" < la...@starlightsolar.com> wrote: > Hello Wrenches, > > A customer has 3250 Watt PV array @ 139Voc. The PV controller is Magnum > PT100. He wants to install a Grundfos SQFlex pump and be able to switch the > DC from the PV controller to run the pump directly. He would like to switch > midday after the battery (48V) is at a high SoC. > > I’m looking for a switching arrangement to do this without arcing since it > will be used a few times each week. Any have a recommendation? > > Thank you, > > Larry Crutcher > Starlight Solar Power Systems > > > > > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Outback Mate3 programming issues
Hello William, Its very frustrating to deal with this sort of thing. I have been running a Mate3 with Optics and I have to say, Its gotten a lot better than it was in the beginning! (however, there are still a few bugs, specifically with 3.015.003. I have been running 3.015.001 and its been mostly solid (with the exception of small one or two hour windows of data that go missing. This doesnt always happen, but every once in a while it does. When I ran 3.015.000 (If I recall) That is when I had exactly what you described: Upon plugging in (to reboot) Mate3, it would remove stacking parameters and make multiple inverters Master. Ive seen it happen on my home system. Upgrading to 3.015.001 seems to have fixed that issue for me. If you have your doubts about what firmware you should be running, I would check out the Outback user forum, members seem pretty fast to make a stink about new bugs and issues found. Good luck RoyR Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Tue, Dec 13, 2016 at 8:00 PM, William Miller wrote: > Friends: > > > > I apologize for not reporting in sooner. As most of you remember, we have > seen a few Outback systems with Mate3 controllers experience apparent > self-reprogramming. I experienced it and several others reported on it. > Many have requested updates, on-line and off. > > > > I have discussed this at length with a couple Outback employees. We have > reached no definite conclusions but we do have a theory: About 2 weeks > prior to this failure, I had a Mate3 fail. There are two in this system > and of course the more important of the two failed. > > > > I swapped the less critical Mate3 for the failed unit. We stored the > configuration of the failed unit onto the SD card and applied that > programming to the replacement unit. We spot checked a few settings and > assumed the programming was good. It is possible that corruption occurred > during this process. The system ran fine for about 2 weeks and then > failed. The failure mode was that 4 of the 8 inverters became Masters. > > > > The site is, of course, a long ways from my shop. On my last visit I > copied the data from the card I thought was pertinent, but I find that to > be conclusive, I need the data from the other SD card. Once I retrieve > that data, I can hopefully prove or disprove this theory. I will keep you > posted. > > > > There are a couple of Outback employees that are taking this seriously, > and I am most grateful to them. In reading between the lines, it appears > to me that they don’t have a lot of support from management to pursue > problems like this. It was never said directly, so I apologize if I > misunderstood. However, if this problem is causing more than one or two of > us consternation and inconvenience, we need to be vocal with Outback wo > they can dedicate resources. I don’t fault Outback, we all have to set > priorities. As consumers, we need to request higher priorities to issues > if they are causing serious problems. > > > > There is also other issues: “partially disconnected” systems, gaps in the > data and connection reliability issues.. The partial issue cropped up > recently. There is a new firmware that supposedly deals with these > issues. Check It out. > > > > I was told that since Optics was a free service, there was limited > responsibility from Outback for reliability. I can’t agree with this > point. We spent a lot of money on communications infrastructure and pay > monthly for internet to use this service. I think Outback released the > Optics system a wee bit prematurely. The pace of firmware upgrades > confirms this. I respect Outback people and the product line, but I think > expectations might have been more realistic if Optics had been deemed a > “beta” release when it first came out. The value and promise of the system > is obvious and I will hang in there with Outback and help any way I can to > make the product better. One way I can help is remain optimistic that > these problems will be solved. > > > > More soon. > > > > William > > > > > > [image: Gradient Cap_mini] > Lic 773985 > millersolar.com <http://www.millersolar.com/> > 805-438-5600 <(805)%20438-5600> > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.
Re: [RE-wrenches] Troubleshooting Stumper - Homerun Interference in Conduit/Inverter Turning Off/On Rapidly
Have you measured the current of each string simultaneously while the issue was happening? Have you verified correct polarity on each string? Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Sep 7, 2016 4:45 PM, "Matt Partymiller" wrote: > Wrenches, > > One of our systems is having an issue I have not encountered before where > the inverter switches between nighttime mode and interconnection every few > seconds. I am hoping for some technical wisdom from the community. > > We have an array of 20 TrinaSmart modules in two strings of 10. The array > is connected to a Solectria 3.8 kW inverter. The conduit run is simple, > all four homerun wires (#10 PVwire) in 1" EMT down to the proximity of the > Solectria inverter where the conduit switches to 1" LFMC before entering > the inverter. The run is about 20', straight down the side of the wall > before hitting the inverter. A 600V jacketed communications wire was also > in the conduit but has since been removed and run separately. > > Our inverter is starting up, running for a few seconds, giving a low > voltage error, briefly showing nighttime mode, then going into startup > mode again. Solectria was gracious enough to send us a new inverter but > we have the exact same issue. They tell us their error codes (266, 274) > indicate 0 volts. The transition between low voltage error and startup is > almost instant. Basically we have 20 seconds of start up, 5 seconds of > run, 5 seconds of error then repeat. This is not a grid problem, the > identical system next door works fine. > > In the process of troubleshooting, our technician pulled all four homerun > wires out of our conduit and meggered them. They all tested fine so he > connected to the inverter. The inverter worked fine. The technician > verified grounding of the array and conduit, pulled new homeruns back > through the conduit, and reconnected to the inverter. He had the same > error as before. > > He connected each string separately to the inverter by removing the string > fuses. Either string will operate fine independently. With string one in > conduit and either homerun of string two in conduit (but not both) the > inverter operates fine. With string two in conduit but string one outside > of conduit, the inverter does not operate. > > I was certain the error had something to do with homerun roof wiring so I > went out with the technician and removed and checked pretty much every > module. Everything appears fine, all connections solid, all homeruns have > been remade at least once at this point. Now I am stumped and lack the > technical knowledge to diagnose the problem. I would be extremely > grateful if an esteemed wrench can provide technical support/advice. > > Thanks, > > Matt > > > > > Matthew Partymiller > Solar Energy Solutions LLC > (877) 312-7456 > m...@solar-energy-solutions.com > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Off-grid generator update?
Does the generator need to feed an inverter /charger input? In other words, does it need to provide AC/60hz? If it can be a DC genset (which is usually easier on the system) check out Polar Power. http://www.polarpower.com/ Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Thu, Apr 28, 2016 at 6:00 PM, jerrysgarage01 wrote: > Have you looked at Cummins, we have have great luck and no programming > issues but battery charging needs to be added foroff grid > Jerry > > > Sent via the Samsung Galaxy S™ III, an AT&T 4G LTE smartphone > > > Original message > From: Ray Walters > Date:04/28/2016 7:28 AM (GMT-10:00) > To: RE-wrenches > Subject: Re: [RE-wrenches] Off-grid generator update? > > FYI, generally we haven't had cold start issues with propane units, as > long as the pipe is sized properly ( as mentioned in another recent post) > and the starter battery is kept fully charged. > This is based on about 20 years experience in the Rockies with temps below > 0, but not 40 below. We don't use block heaters, carb heaters, etc. > We currently have been using Generac Ecogen, but not that happy with them. > Cheap air cooled motor, way too many computer gizmos, no on board charging > (must have AC power or PV to charge the starting battery) We even had to > call customer service to get an authorization code to set up remote start. > This is off grid with no internet or cell service; ridiculous. I hope > Generac reps are lurking here, because these are really not much better > than the crop of stand by generators. > IMO no off grid generator should have a phantom load, or require cell > service to commission. What happened to the old water cooled Kohlers? > > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer303 505-8760 > > On 4/28/2016 11:17 AM, Jeremy Rodriguez wrote: > > Check out Gillette generators. Made in Indiana > 12.5 kW w Subaru > > Jeremy Rodriguez > Solar Installation And Design Expert > All Solar, Inc. > 1463 M St > Penrose Colorado 81240 > > Sent by Jeremy's iPhone. Sorry for typos and shorthand! > > On Apr 28, 2016, at 10:20 AM, Lena Wilensky < > l...@nunatakenergy.com> wrote: > > I did some searches on the list for what folks are doing for off-grid > propane generators these days, but all the threads I found were from 5-6 > yrs ago, so I was hoping to get some more current info. > > We're looking for about a 10kw+ propane unit (big derate at altitude), and > we run into 2 main problem areas: > > First is the warranty - either there are no units warranteed for off-grid > use, or there are only a couple of models and the warranty is short (1 > year). > > Second, and perhaps larger, is all the loads that now come with the > "off-grid" units. The computer takes some, but mostly the "cold weather > kit" aka carb heater must be installed in our climate (to actually start, > but also for warrantee), and it's set up to be on a thermostat (read: "on > all the time from Nov-April" here in the mountains). According to the > Kohler tech support it takes a steady 50W. We have set up older units to do > battery charge only during the day, and have the carb heater on a manual > switch, but it sounds like we can't really get at these circuits anymore > since they're all pre-configured and pre-wired in the guts of the genset > computer. > > The Kohler and Onan support folks said both these issues are due to EPA > considering off-grid use as prime power as opposed to standby, so they are > held to tougher emissions standards. > > Whatever the reasons, we're wondering what people are actually doing these > days - still the standby units they kind-of warrantee for off-grid? 12RES > from Kohler and the 13kw unit from Onan? Generac? Have folks been going > back to the smaller gas units from Honda and running them more? And how > are cold climate folks dealing with the heating issue? > > Any suggestions appreciated! > > Lena Wilensky > > www.nunatakenergy.com > 970-642-5554 > NABCEP Certified PV Installer: > Cert. #R02907-17 > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules &
Re: [RE-wrenches] 600V charge controller questions
Allan, you could network multiple Morningstar 600v controllers for the output ampacity required (up to 4 controllers, ...yeah, I know they are expensive). Would you even need a transfer switch? Why not just wire Fronius IG and Morningstar controller inputs in parallel (with associated fuses and disconnects of course). Once batteries are charged and in float, the array then would be available to the IG to sell to the grid. If the IG goes down (which it prob will eventually) then the MS 600v controller will charge the batts enough to get by. Seems like it would work, am I missing something? RoyR Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Sun, Jan 31, 2016 at 1:14 PM, Ray Walters wrote: > We were called in on a system similar to this, and we ended up just > installing an AC transfer switch. Normally the GT array sold back to the > grid side of the system, but in an extended outage, the customer had the > option to switch the connection to the back up load side (AC coupled) > He was made aware that battery regulation could be an issue, and to switch > off the GT array when the batteries got even close to full. Obviously this > would not be acceptable in a full time off grid system, but this option > could save your bacon in the very occasional long outage. > It boils down to: Is it better to let the batteries remain discharged and > the customer to have no power, or take a chance on over charging the > batteries in an emergency? > Essentially, the system would remain full proof until they manually > switched in the AC coupled system. I look at this sort of like any other > manual over ride switch: don't use it unless you understand the > consequences, and really need it. Add strongly worded warning stickers: " > Danger Battery damage could result, Emergency use only!" > The other options you are considering would certainly be better, but at > significantly more cost. > > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer303 505-8760 > > On 1/30/2016 3:21 PM, Allan Sindelar wrote: > > Wrenches, > I am serving as a consultant for a homeowner with an array of solar > equipment that doesn't do what he wants, a common story. He wants > independence in the event of an extended utility outage. To cut to the > chase: > > He has one array of 3,100 watts feeding through a controller into a 48V > battery bank. No issues with this. > A second array of 4,230 rated watts (2 9-module strings of 235W Sharp > modules) currently feeds a Fronius IG-4000 inverter and the grid. In the > event of an outage this system shuts down, of course. He is looking at > replacing his existing pair of old SW5548s with a single Schneider XW > system, or possibly a Radian. > I would like to give him the ability to switch from the Fronius inverter > to a 600V charge controller if either a) the grid went down or b) the > Fronius failed. > > I looked at Morningstar's TS-MPPT-600 controller with the DC transfer > switch, but its DC output is rated as limited to 60A, less than the 4.2kW > output of the array. The spec sheet gives a nominal maximum wattage of > 3,200W, although a note adds that "input power can exceed Nominal Maximum > Operating Power, but controller will limit and provide its rated continuous > maximum output current into batteries. This will not harm the controller." > > I looked at Schneider's XW MPPT80 controller, which has the necessary > higher capacity. But beside lacking any built-in or optional input > metering, it lacks the transfer switch available with the Morningstar. > > So questions: > - Is there a good transfer switch to use with the Schneider unit, to allow > manual switching of the PV input between the Fronius (when the grid is up) > and the controller and batteries (when the grid is down)? > - Should I use the Morningstar unit, recommending that the periodic > flatlining due to the excess wattage be simply accepted as a small > concession to being able to use the array during an extended outage? > - Is AC coupling simply a better approach? > - Any other solutions? > > Thanks, Allan > > -- > > *Allan Sindelar* > al...@sindelarsolar.com > NABCEP Certified PV Installation Professional > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder (Retired), Positive Energy, Inc. > *505 780-2738 <505%20780-2738> cell* > > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > >
Re: [RE-wrenches] Battery corrosion issue
Yup, id pre-drill and use an ez-out, or use a flaring tool as a small press and drive it out. RoyR On Jan 20, 2016 3:54 PM, "Kristopher Schmid" wrote: > Greetings, > > Do any of you battery gurus have a suggestion for a method of removing a > bolt remnant that is corroded into a flag terminal. Both sides snapped off > flush with the flag. I was thinking try to drill it out or maybe a small > gear pulling tool? I will never again use the non stainless hardware > supplied by the manufacturer... > > Picture attached for reference. > > Thanks! > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Outback OpticsRe
I use OpticsRE on my off grid system. It seems stable in its current revision. There are a few things that bug me about the GUI, such as not being able to make drop-down preferences retain settings on log-in for their graphs. Also not being able to make shunts display on top of dashboard (i dont use outback charge controllers, so it cant tell my PV output except through FNDC shunt). Curious to see how the mobile app looks if it ever comes out, as some of the data from graphs is difficult to extrapolate on a mobile device, as you cant hover a mouse over parts of the graphs. Other than that it seems solid, and is set up nice for dealer/installers to manage multiple sites at a glance. I love being able to write to the aux relays and turn loads/charging sources on and off at will. Ive not used it very long but it seems promising and kinda neat. :) Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Dec 17, 2015 10:05 PM, "Lou Russo" wrote: > Wrenches, > > I have several existing off-grid sites that now require remote monitoring. > All of the systems are Outback FX series inverters with hubs, original > Mates, and relatively easy WAN access. I keep coming back to Outback's > OpticsRE as a option. I have been disappointed in most manufacture's > attempts at web interfaces (Midnite, Schneider, Etc..), so I am hesitant to > commit. Does anybody out there have direct experience with multiple > off-grid sites with OpticsRE? I saw 2 threads from July and last week, but > no real in depth discussion around reliability, ease of use for the client, > logging, control, troubleshooting, etc.. so any detailed real world > experiences would be greatly appreciated. > > > Aloha, > > Lou Russo > l...@spreesolarsystems.com > 440 345 6762 > Spree Solar Systems LLC > CT-34322 > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Batteries
I would think the 1 gal sprayer would be perfect for customers with smaller banks. When you start going through two, three or four gallons of distilled water at a time, i could see it getting tedious. Ive used an elevated 5Gal polyethylene tank with a 1/4" food grade hose connected to a small polyethylene wand (and small hand operated ball valve) it makes watering so quick and easy, and no messes. You do need a good headlamp while doing this to verify water level. :) Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Dec 12, 2015 8:20 AM, "Roy Butler" wrote: > Dan, > > We've been using the garden sprayer method for the last 14 years and it > works great! > Be sure to buy a sprayer with a plastic wand..the brass wands can > create a bit too much excitement. > > Roy Butler > NABCEP Certified Solar PV Installer® > NYSERDA eligible PV & wind installer > Four Winds Renewable Energy, LLC > 8902 Route 46, Arkport, NY 14807607-324-9747 www.four-winds-energy.com > > Although no trees were killed in the sending of this message, > a large number of electrons were terribly inconvenienced. > > > > On 12/12/2015 7:54 AM, Dan Fink wrote: > > Hi Jerry; That's a great idea, I'm going to get one and try it next time I > hit Home Depot. I also do not use automatic or central battery watering > systems, as I feel they give a false sense of security. Nobody is in there > regularly checking for loose connections and corrosion. My most important > battery bank tool is a thermal imaging camera that connects to my > smartphone. > > Dan Fink > Adjunct Professor, Ecotech Institute > IREC Certified Instructor™ for: > ~ PV Installation Professional > ~ Small Wind Installer > Executive Director, Buckville Energy > NABCEP Accredited Continuing Education Providers™ > 970.672.4342 > > > > On Fri, Dec 11, 2015 at 5:41 PM, Jerry Shafer > wrote: > >> Wrenches, >> There has been allot of talk about batteries, i use allot of FLA and >> Edison type batteries. When we do an install i aways include a one gallon >> pump weed sprayer with distilled water, we cut the sprayer tip off and it >> is an easy and fast way to fill batteries, this is a cheap way too. Battery >> automatic fills are fine but there is no subsutute for eyes and hands on >> inspections. Just wanted yo pass along a easy battery filling solution. >> Jerry >> > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & > settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette:www.re-wrenches.org/etiquette.htm > > Check out or update participant bios:www.members.re-wrenches.org > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Friend with system needs help
Hmm, interesting. I didnt even know they had a frameless version. The ones i have are SP-150P Siemens and have a very nice frame and jbox on back. Probably my initial comment didnt make sense to you if you have a different mod than i was referring to. Further troubleshooting should include a clamp ammeter and looking for half the current from any module to see if any of the blocking diodes have opened. Do these frameless mods have blocking diodes somewhere? Roy Rakobitsch NABCEP Certified Small Wind Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Nov 19, 2015 2:07 PM, "Steve Jefferson" wrote: > All 4 strings were run separately. And all 4 ran significantly lower than > they should. Based off of calculations done. > > > > Dan was nice enough to spend some time with me on the phone about this. > > Think I may have another visit and more TS to do. > > > > Probably wont be until after the holidays, but I will up if anything is > found. > > > > These mods are junk in my opinion, the lack of frame makes them weak. And > when they were torn off the other roof in LA, the foam backing blocks just > cracked and fell apart. Who knows what damage has been done to them. > > > > Thanks > > > > SMA America, LLC > > Steve Jefferson > > Service Line Supervisor > > 3925 Atherton Ave > > Rocklin, CA 95765 - 3714 > > U.S.A. > > Tel: +1 916 625 3185 (direct) > > Fax: +1 916 625 0871 > > Mobile: +1 916 622 4253 > > Email: steve.jeffer...@sma-america.com > > www.SMA-America.com <http://www.sma-america.com/> > > > > [image: cid:image001.png@01CF1CFA.FE18BEB0] > <http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> > > > > This email and any attachments thereto may contain SMA America, LLC > confidential, privileged and private material for the sole use of the > intended recipient. Any review, copying, or distribution of this email (or > any attachments thereto) by others is strictly prohibited. If you are not > the intended recipient, please contact the sender immediately and > permanently delete the original and any copies of this email and any > attachments thereto. Thank you. > > > > > > *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On > Behalf Of *Brian Mehalic > *Sent:* Thursday, November 19, 2015 10:47 AM > *To:* RE-wrenches > *Subject:* Re: [RE-wrenches] Friend with system needs help > > > > Steve, I didn't see if you answered Jay regarding operating the inverter > on just a single string at a time. I'd definitely try that before curve > tracing. > > > > > Brian Mehalic > NABCEP Certified Solar PV Installation Professional™ R031508-59 > > > > PV Curriculum Developer and Instructor > > Solar Energy International > http://www.solarenergy.org > > > > On Thu, Nov 19, 2015 at 8:31 AM, jay wrote: > > HI Steve, > > > > So they are all low? > > > > Then I suggest an IV curve tracer. > > > > > > jay > > > > > > On Nov 19, 2015, at 7:18 AM, Steve Jefferson < > steve.jeffer...@sma-america.com> wrote: > > > > The outputs are pretty close. That’s what is throwing me off. > > In most trouble shooting adventures, the problem is fairly obvious. > > This one, not so much. > > > > SMA America, LLC > > Steve Jefferson > > Service Line Supervisor > > 3925 Atherton Ave > > Rocklin, CA 95765 - 3714 > > U.S.A. > > Tel: +1 916 625 3185 (direct) > > Fax: +1 916 625 0871 > > Mobile: +1 916 622 4253 > > Email: steve.jeffer...@sma-america.com > > www.SMA-America.com <http://www.sma-america.com/> > > > > > <http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> > > > > This email and any attachments thereto may contain SMA America, LLC > confidential, privileged and private material for the sole use of the > intended recipient. Any review, copying, or distribution of this email (or > any attachments thereto) by others is strictly prohibited. If you are not > the intended recipient, please contact the sender immediately and > permanently delete the original and any copies of this email and any > attachments thereto. Thank you. > > > > > > *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org > ] *On Behalf Of *Jay > *Sent:* Wednesday, November 18, 2015 1:42 PM > *To:* RE-wrenches > *Subject:* Re: [RE-wrenches] Friend with system needs help > > > > Hi steve. > > > > Is the output from each string of 11
Re: [RE-wrenches] Friend with system needs help
I have these same modules at my home (circa 2002 i believe). I have found issues with two modules (out of 30 mods) that had intermittent connections due to the spot welds opening on the tabs coming from the back sheet, going to the diodes in the j box. I fixed it with very small stainless machine screws and nuts with toothed washers. I woild look carefully at these connections, as they are not easy to see problems. Good luck. RoyR Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Nov 18, 2015 3:38 PM, "Steve Jefferson" wrote: > Afternoon wrenches, > > > > I have a friend who I helped install second hand modules onto a pergola > structure at their home. > > > > The system is as follows: > > > > 44 – Siemens SP-150 > > 1 – SMA SB6000US-12 (XFMR unit) > > > > Since install, they have not produced half of what they should be. I have > tested the diodes and they seem to be good, there were a couple that tested > questionable, so they were replaced. > > VOC is good, but it seems that under load the system goes to garbage. > > > > I am at a loss of what/how to test anything else that may determine cause. > > > > Would a PV Analyzer help? Would there happen to be anyone in the > Sacramento area with one who could come to the site? Obviously the customer > will pay for their time. > > > > Thanks in advanced. > > > > SMA America, LLC > > Steve Jefferson > > Service Line Supervisor > > 3925 Atherton Ave > > Rocklin, CA 95765 - 3714 > > U.S.A. > > Tel: +1 916 625 3185 (direct) > > Fax: +1 916 625 0871 > > Mobile: +1 916 622 4253 > > Email: steve.jeffer...@sma-america.com > > www.SMA-America.com <http://www.sma-america.com/> > > > > [image: cid:image001.png@01CF1CFA.FE18BEB0] > <http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> > > > > This email and any attachments thereto may contain SMA America, LLC > confidential, privileged and private material for the sole use of the > intended recipient. Any review, copying, or distribution of this email (or > any attachments thereto) by others is strictly prohibited. If you are not > the intended recipient, please contact the sender immediately and > permanently delete the original and any copies of this email and any > attachments thereto. Thank you. > > > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] AGS sensitive battery charger
The midnite classic 250 can do this fine. Rectify the generator 110vac to around 165vdc and feed into classic. Use Aux functions to start and stop generator based on battery voltage or SOC %. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Oct 15, 2015 6:15 PM, "Chris Daum" wrote: > Dear people: > > I'm looking for an easy solution for battery charging off a generator, but > trying to save the cost of a big inverter. I have a customer who needs to > charge a 48V battery bank with a 30A charger off of a generator--but I need > it to sense when the battery voltage is low, so that the "device" (charger) > will automatically turn on the (2-wire start) generator and charge the > batteries. I am trying to avoid the cost of, say, a Magnum 4448PAE with > its AGS module, and just get a voltage sensitive battery charger. Is this > doable? Any ideas? > > THANKS. > > > Chris Daum > Oasis Montana Inc. > 406-777-4309 > 406-777-0830 fax > www.oasismontana.com > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Flying with Makita batteries in checked or carryon?
I usually try to ship tools and materials ahead of time, but have flown with plenty of tools/batteries and aerosols and various chemicals that you probably shouldnt fly with (all of these have been in checked bags). Ive had my bags searched plenty of times, and never have there been any issues, except once TSA took and discarded my sunscreen!!, which had the top taped shut. -I found that pretty strange, and flew home with a sunburn. You'll probably be fine. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Sep 29, 2015 9:39 AM, "Synergy Renewable Systems" < ryan.hark...@energycraft.com> wrote: > I've checked tools, hardware, wire, and spare batteries both domestic and > internationally and had no issues. They did search the bag once, but left > all my things. > > > > > *Ryan HarkinsNABCEP Certified PV Installation Professional™ /Project > Manager* > > > Synergy Renewable Systems, LLC > PO Box 58 > Stoughton, WI 53589 > PH: (608) 712-7862 > ryan.hark...@energycraft.com > www.energycraft.com > > > > On Sep 28, 2015, at 8:37 PM, Jerry Shafer > wrote: > > Wrenches > I fly a few times a month, one time they ask about all batteries, I will > not carry anything check it all not had any issues. > Jerry > On Sep 28, 2015 3:18 PM, "Dan Fink" wrote: > >> Esteemed Wrenches >> I normally drive to jobs with my tools, or UPS ship the tools ahead of >> time. This upcoming MET tower maintenance job in Nevada is too tight a >> timeline to drive or ship. I figured some of you have recent experience >> with this, and the rules seem to change quickly. I have to fly with my >> impact, driver, 3 batteries and charger. >> >> From the TSA PDF (no date of course): >> >> https://www.faa.gov/about/office_org/headquarters_offices/ash/ash_programs/hazmat/passenger_info/media/faa_airline_passengers_and_batteries.pdf >> >> My batteries are 56 watt-hour lithium ion; I'd rather not have this heavy >> stuff in my carry-on. What is "protected" for checked bags, the Makita has >> a sliding sleeve. Does that count? No "spare" batteries allowed in checked >> bags? I am taking this that I can bring one battery in my checked bag, one >> in my carryon, and a charger? That would work. >> >> Any input appreciated, a long security delay or seized tools would be a >> big problem. >> >> Dan Fink >> Adjunct Professor, Ecotech Institute >> IREC Certified Instructor™ for: >> ~ PV Installation Professional >> ~ Small Wind Installer >> Executive Director, Buckville Energy >> NABCEP / IREC / ISPQ Accredited Continuing Education Providers™ >> 970.672.4342 >> >> >> >> ___ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] panel failure
Although i cant vouch for 20 year old siemens, my siemens modules (14 yr old sp-150s) had an intermittent connection develop between the stainless ribbon that exits the back sheet and the terminal where the blocking diodes connect (3 diodes). They used a spot welder to join the materials. This had opened up - the small spot welds broke. Like I said, yours may be different, but might be worth a shot scoping out the integrity of these connections. This would be on the posts that feed the blocking diodes, so before the diodes. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Sep 16, 2015 7:47 AM, "Roy Rakobitsch" wrote: > Ron, I replied a few days ago, ill fwd if you want. > > Roy Rakobitsch > NABCEP Certified Small Wind Installer® > NABCEP Certified Solar PV Installer® > Certified Advanced Tower Climbing, Safety & Rescue > Wind/PV Design Engineer > Windsine LLC > 631-514-4166 > www.windsine.org > On Sep 16, 2015 1:57 AM, "Brian Teitelbaum" > wrote: > >> Ron, >> >> I'll pipe in here. If the module "works" when he bypasses the diodes, then >> the diodes, or the solder connections on the ribbons or the diodes, must >> be >> at fault. >> >> I put "works" in quotes because we don't have the details on the meter >> readings. >> >> Brian >> AEE Solar >> >> >> >> -Original Message- >> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On >> Behalf Of Ron Young >> Sent: Tuesday, September 15, 2015 11:45 PM >> To: RE-wrenches >> Subject: Re: [RE-wrenches] panel failure >> >> Thanks Allan, I was wondering about the lack of response as this group is >> always very helpful. One begins to suspect the phantom cause, i.e. the >> rest >> of the story that wasn’t told to us by the customer. It happens from time >> to >> time ;-) >> >> Ron >> >> > On Sep 15, 2015, at 9:07 PM, Allan Sindelar >> > wrote: >> > >> > Ron, >> > The lack of response may indeed be your answer. I didn't reply because >> it >> > hasn't happened on my watch and I have no idea what would cause what you >> > describe. >> > Allan >> > >> >> On Sep 15, 2015, at 8:30 PM, RM You wrote: >> >> >> >> Just wondering if any esteemed wrenches have an idea what could cause >> >> this problem? Customer says nothing unusual happened that he is aware >> of >> >> and the panels had been working fine for many years but now 4 of 6 >> panels >> >> just quit. Doesn’t appear to be a diode failure. >> >> >> >> Ron >> >> >> >>> On Sep 11, 2015, at 4:58 PM, RM You >> wrote: >> >>> >> >>> I have a customer who has 6 siemens 48w panels that are 20 years old >> >>> (hooked in parallel to a 12v battery). He says that 4 of them have >> >>> failed in that there is no output unless he bypasses the diodes. >> However >> >>> he pulled the diodes and checked them on a diode check and separately >> on >> >>> a battery with a light bulb and they appear to be functioning >> correctly. >> >>> Any ideas what could be causing this anomaly? >> >>> >> >>> Ron Young >> >>> >> >> >> >> ___ >> >> List sponsored by Redwood Alliance >> >> >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> >> >> Change listserver email address & settings: >> >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> >> >> List-Archive: >> >> >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> >> >> List rules & etiquette: >> >> www.re-wrenches.org/etiquette.htm >> >> >> >> Check out or update participant bios: >> >> www.members.re-wrenches.org >> >> >> > ___ >> > List sponsored by Redwood Alliance >> > >> > List Address: RE-wrenches@lists.re-wrenches.org >> > >> > Change listserver email address & settings: >> > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> > >> > List
Re: [RE-wrenches] panel failure
Ron, I replied a few days ago, ill fwd if you want. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Sep 16, 2015 1:57 AM, "Brian Teitelbaum" wrote: > Ron, > > I'll pipe in here. If the module "works" when he bypasses the diodes, then > the diodes, or the solder connections on the ribbons or the diodes, must be > at fault. > > I put "works" in quotes because we don't have the details on the meter > readings. > > Brian > AEE Solar > > > > -Original Message- > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On > Behalf Of Ron Young > Sent: Tuesday, September 15, 2015 11:45 PM > To: RE-wrenches > Subject: Re: [RE-wrenches] panel failure > > Thanks Allan, I was wondering about the lack of response as this group is > always very helpful. One begins to suspect the phantom cause, i.e. the rest > of the story that wasn’t told to us by the customer. It happens from time > to > time ;-) > > Ron > > > On Sep 15, 2015, at 9:07 PM, Allan Sindelar > > wrote: > > > > Ron, > > The lack of response may indeed be your answer. I didn't reply because it > > hasn't happened on my watch and I have no idea what would cause what you > > describe. > > Allan > > > >> On Sep 15, 2015, at 8:30 PM, RM You wrote: > >> > >> Just wondering if any esteemed wrenches have an idea what could cause > >> this problem? Customer says nothing unusual happened that he is aware of > >> and the panels had been working fine for many years but now 4 of 6 > panels > >> just quit. Doesn’t appear to be a diode failure. > >> > >> Ron > >> > >>> On Sep 11, 2015, at 4:58 PM, RM You wrote: > >>> > >>> I have a customer who has 6 siemens 48w panels that are 20 years old > >>> (hooked in parallel to a 12v battery). He says that 4 of them have > >>> failed in that there is no output unless he bypasses the diodes. > However > >>> he pulled the diodes and checked them on a diode check and separately > on > >>> a battery with a light bulb and they appear to be functioning > correctly. > >>> Any ideas what could be causing this anomaly? > >>> > >>> Ron Young > >>> > >> > >> ___ > >> List sponsored by Redwood Alliance > >> > >> List Address: RE-wrenches@lists.re-wrenches.org > >> > >> Change listserver email address & settings: > >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > >> > >> List-Archive: > >> > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > >> > >> List rules & etiquette: > >> www.re-wrenches.org/etiquette.htm > >> > >> Check out or update participant bios: > >> www.members.re-wrenches.org > >> > > ___ > > List sponsored by Redwood Alliance > > > > List Address: RE-wrenches@lists.re-wrenches.org > > > > Change listserver email address & settings: > > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > > List-Archive: > > > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > > > List rules & etiquette: > > www.re-wrenches.org/etiquette.htm > > > > Check out or update participant bios: > > www.members.re-wrenches.org > > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] panel failure
Although i cant vouch for 20 year old siemens, my siemens modules (14 yr old sp-150s) had an intermittent connection develop between the stainless ribbon that exits the back sheet and the terminal where the blocking diodes connect (3 diodes). There used a spot welder to join the materials. This had opened up - the small spot welds broke. Like I said, yours may be different, but might be worth a shot scoping out the integrity of these connections. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Sep 11, 2015 6:58 PM, "RM You" wrote: > I have a customer who has 6 siemens 48w panels that are 20 years old > (hooked in parallel to a 12v battery). He says that 4 of them have failed > in that there is no output unless he bypasses the diodes. However he pulled > the diodes and checked them on a diode check and separately on a battery > with a light bulb and they appear to be functioning correctly. Any ideas > what could be causing this anomaly? > > Ron Young > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] DC conductor line loss numbers
Maybe 600vdc charge controller? Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Jul 22, 2015 1:52 PM, "Jerry Shafer" wrote: > Wrenches > Some time back there was discussion on the conductor size and efficiency > rating requirement for long DC runs. > What I am looking at is this, 400 feet of MCM 400 to keep the line loss at > or below 1% per NEC code for an off grid application, cost vs return is not > acceptable. 2/0 is less than 2.5% and the cost is far less. Specs are 4 > strings of 3, 250 watt modules feeding one Outback FM 80 charge controller. > There are lots of things I can do like SMA instread, or 200 VDC charge > controller but nothing can be changed except the wire gauge. Does anyone > recall a thread with this topic. > > thoughts ?? > Jerry > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Battery Bank to Inverter Wiring
In my experience, adding large electrolytic filter caps at the inverter seems to help quite a bit with ac ripple issues and increases inverter efficiency a bit as well. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Jun 29, 2015 5:05 PM, "Ray Walters" wrote: > This is fascinating because while I knew the DC cables had an AC > component, I never realized how much inductance played in the volt drop to > the inverter. Thanks for bringing this to our attention Jarmo. > Which brings up another question based on Benn's question: isn't the > battery itself part of the inductive loop? and would the lead inside and > steel cases act to increase the inductance? Should we consider changing > battery layouts not just to shorten cable lengths, but to counter > inductance in the batteries themselves? If needed, we could actually wire > the batteries to "twist" by putting every other 2 v cell in the opposite > row. > My guess is that it wouldn't be worth it, but I've been wrong many > times... > > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer303 505-8760 > > On 6/29/2015 3:55 PM, Benn Kilburn wrote: > > What about when you have the (+) and (-) terminals at opposite ends of a > larger battery bank? Sure you can run the conductors side-by-side once > they meet up on their way to the inverter, but would you consider the > distance between the end terminals a "large loop"? > Ideally the battery string is laid out so the end terminals are close > together and close to the inverter, but this isn't always the case. > > Benn Kilburn > SkyFire Energy Inc. > 780-906-7807 > > > On Jun 29, 2015, at 10:28 AM, jarmo.venalai...@schneider-electric.com > wrote: > > Hi: > > From the comments so far, it appears that within the wrenches group, good > practices are the rule and DC cables are kept side by side, so the problem > I mentioned hasn't come up much. > > I have seen "large loop" battery cables a couple of times in solar > installs myself out on islands way down south. Also on boats/RV's/motor > homes. > > Please keep the cable loop in mind when you do bench tests of inverters, > as it may screw up the results and make it seem like there is something > wrong with the inverter. > > JARMO > > _ > > * Jarmo Venalainen* | * Schneider Electric ** | Xantrex Brand* | > *CANADA* | *Sales Application Engineer* > * Phone:* +604-422-2528 | *Tech Support:* 800-670-0707 | *Mobile:* > +604-505-0291 > * Email:* *jarmo.venalai...@schneider-electric.com* > | *Site:** www.Xantrex.com* > <http://www.xantrex.com/> | *Address:* 3700 Gilmore Way, Burnaby, BC > V5G4M1 ><http://www.xantrexrebate.com/> > <http://www.xantrex.com/> > <https://www.facebook.com/Xantrex> > <https://twitter.com/Xantrex> > <https://twitter.com/Xantrex> > > > *** Please consider the environment before printing this e-mail > > > > From: "b...@midnitesolar.com" To: RE-wrenches < > re-wrenches@lists.re-wrenches.org>, Date: 06/28/2015 10:30 PM Subject: Re: > [RE-wrenches] Battery Bank to Inverter Wiring Sent by: "RE-wrenches" < > re-wrenches-boun...@lists.re-wrenches.org> > -- > > > > > On 6/28/2015 9:20 AM, Allan Sindelar wrote: > >>>>I'm not an EE, but I can't see what difference twisting would make in > the absence of a building/collapsing field as is normal with AC.<<<< > > It is little known that with the typical inverters that use the heavy > power transformers, > have a lot of AC 120 Hz (or 100 Hz for 50 Hz systems) current mixed in > with that DC battery current. > > The AC output current reflects back to the input as ripple current. This > is why you want to > have at least short as possible Sbattery cable runs AND keep the wires as > close together as possible. > > Twisting the battery cables may help a bit but that is probably overkill. > > The problem has to do with inductance in the battery cables. You can use > as big of cable > as you can fit in to reduce resistance, but that will not help to lower > the inductance. > The problems you can sometimes have with high inductance is that L-C > resonance at the > inverter can raise the peak voltages seen at the inverter input terminals >
Re: [RE-wrenches] SnapNrack
Loctite makes anti seize in aerosol cans. Not necessarily less messy but certainly less tedious if all bolts are prepped on the ground and carried up in a bucket for assembly. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On Jun 29, 2015 12:32 PM, "Ray Walters" wrote: > Anti seize also comes in larger cans with a brush, but it still can get > messy. > Also on the torque issue, I found just using the T handle hex wrench from > the manufacturer (we use S Flex) gets the torque where it should be, and > even a gorilla can't over torque it too far. > Old fashioned, but we have less heavy tools to carry on the roof, and no > over torque issues. With lubed threads, the T handle wrench can twirl, > which is almost as fast as using a power tool. > > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer303 505-8760 > > On 6/29/2015 11:12 AM, Allan Sindelar wrote: > > Kurt, > Less messy, yes; less tedious, maybe: anti-seize also comes in a > semi-solid stick form, like a large lip balm tube with a cap and a twist > dial on the bottom to raise the level of the anti-seize as it's used. One > quick rub on the threads per bolt. Purchased through Fastenal. > Allan > > *Allan Sindelar* > al...@sindelarsolar.com > NABCEP Certified PV Installation Professional > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder (Retired), Positive Energy, Inc. > *505 780-2738 <505%20780-2738> cell* > > > On 6/29/2015 11:05 AM, Kurt Johnsen wrote: > > Esteemed Wrenches, > Does anyone know of a less tedious and messy way to lube the bolts than > squeeze tube anti-seize? > > My 2 cents; I believe that the torque specs for an engineered assembly are > put in there for a reason. Ignoring them puts the installer on the hook for > any failures. Aside from being the right thing to do, using torque wrenches > helps avoid assuming unnecessary financial risk which my thin margins > cannot afford. > > Kurt Johnsen > > On Sun, Jun 28, 2015 at 5:27 PM, Ray Walters wrote: > >> Besides your note that cordless impact drivers can over torque the >> clamps, also they spin the bolts too fast which can lead to spalling of the >> SS hardware. >> We now hand torque those connects. Finally, most torque specs are for >> lubricated bolts. We use anti-seize on the threads before torquing. >> Using a cordless impact driver and no lube can cause not only module >> damage but also clamp damage, and end up with clamps not actually securing >> the modules, because the bolts spalled out before fully clamping. >> >> R.Ray Walters >> CTO, Solarray, Inc >> Nabcep Certified PV Installer, >> Licensed Master Electrician >> Solar Design Engineer303 505-8760 >> >> On 6/28/2015 3:06 PM, Benn Kilburn wrote: >> >> Chris, >> It sounds (to me) that you are describing the bonding "tooth" dug >> through the aluminum frame and into the glass? or at least compressed the >> frame enough to break the glass? If that is the case then i'm betting that >> the clamp bolt was way over-torqued. >> >> You need to check the recommended tightening torque for the module and >> for the racking system you are using. For example, what we are using these >> days, Kinetic, the tightening torque for mid and end clamps is 12 ft-lb and >> here are some recommended clamping torques from some different module >> mfgrs >> Conergy 8 NM - 6 ft-lb >> Hanwha 5 NM - 3.7 ft-lb >> JA Solar 18-24 NM - 13-18 ft-lb >> These likely vary based on the construction of the module frame. >> I've also found that some module mfgrs do not list recommended tightening >> torques in their install manuals, so best to use discretion. >> >> We had a module break after clamping it down. The crew described it as >> 'putting the module in place, clamping it down and turning around to grab >> the next module and hearing a 'crack' followed by the crackling glass sound >> (if you have ever heard a module break, the crackling sound can last for a >> few minutes). The break pattern in the glass seemed to focus on a >> particular mid clamp. I used a torque wrench, set at around 10 ft-lb and >> checked all the mid-clamp bolts, increasing the torque setting by a few >> ft-lb each time until it finally turned a bolt instead of clicking. I >> found that most of the bolts were
Re: [RE-wrenches] Voltage Degradation with Uni-Solar laminate
Ive installed a few systems with these laminates years ago, but havent kept up with performance much unfortunately. I have heard of the diodes going bad (which are glued into the laminate along the sides). Maybe thats your issue? Just speculating... Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On May 31, 2015 2:49 PM, "Allan Sindelar" wrote: > Luke, > I have never worked with Uni-Solar laminates, although I expect to for the > first time this summer, at 12,800' in the White-Inyo mountains, but that's > another story. I installed one small cabin system with US64s in 1999 (the > rancher wanted modules that would keep performing with a few vandals' > bullet holes, which never happened) and they continue to perform as new. > > So take my two comments with that disclaimer in mind. First, you measured > only 63% of rated output. That's pretty low at the controller, even if the > roof is hot. Could there be something else to search for as a cause? > > Assuming it's indeed simply weak voltage, consider a Midnite Classic 200 > or 250, to give the voltage window to allow repairing to a higher nominal > input, maybe 72 or 96 volts, so that the charge voltage will always be > higher than battery voltage. > > Allan > > > On May 31, 2015, at 11:55 AM, Luke Christy > wrote: > > > > Hello Off-Grid Wrenches, > > > > I recently made a periodic maintenance visit to a residential off-grid > system I take care of here in Southern CO, and discovered an interesting > problem. > > > > This system has an array of 48x Uni-Solar PVL-68 laminate modules > applied directly to standing-seam metal roofing. > > > > The data logging on the controller (Outback MX-60) indicated that the > system was having trouble completing a charge cycle and going to float. > Initially I assumed was due to heavy electrical use by the occupants > (renters). After a little checking, I noticed that the module string > voltage was only about 0.5V above the battery voltage! > > This was a cool late morning, with full sun, and the array was charging > almost 2kW at 54.5V. The module strings were running at 55V. I've noticed > the module voltage being lower than I'd like before, but it has never been > this low. I suspect this is the real reason the system hasn't been able to > complete a charge cycle. > > > > By removing the loads I was able to get an open-circuit voltage of 71V, > but that still seems pretty low. > > > > Has anyone else experienced a voltage degradation issue with the > Uni-Solar laminate? What was the expected annual voltage degradation for > this technology? > > > > These modules do have some age on them. The system was installed about > 15 years ago (by a competent installer who is now retired). The system was > installed before MPPT controllers were common, so I assume the modules are > wired in strings of 4 for 48V nominal. > > > > Any experiences or opinions are appreciated. > > Thanks in advance. > > > > -Luke > > > > > > Luke Christy > > > > NABCEP Certified PV Installation Professional™: Certification #031409-25 > > NABCEP Certified Solar Heating Installer™: Certification #ST032611-03 > > CoSEIA Certified PV Installer > > > > Solar Gain Services, LLC > > PO Box 531 > > Monte Vista, CO. 81144 > > sgsrenewab...@gmail.com > > 719.588.3044 > > www.sgsrenewables.com > > > > > > > > > > > > > > > > > > > > ___ > > List sponsored by Redwood Alliance > > > > List Address: RE-wrenches@lists.re-wrenches.org > > > > Change listserver email address & settings: > > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > > > List rules & etiquette: > > www.re-wrenches.org/etiquette.htm > > > > Check out or update participant bios: > > www.members.re-wrenches.org > > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] iron & aluminum
Ive fabricated many steel racks and pole mounts. Some fabbed in my shop and others simply welded together on site. If they know what they are getting into and are aware of the risks involved, id say go for it. Show them pictures of good designs and maybe they can try to duplicate something similar. As far as galvanic reactions, i have used thick nylon washers under aluminum L-feet and rail to mount to steel beams and tube. I use a stainless bolt to bolt it down to the steel as to have the stainless in contact with the aluminum and steel via the nylon washer so those two metals are never in contact. Use a nylon washer (or similar) small enough diameter to be hidden under the L-foot so UV (sun light) will never contact it. There are probably other good solutions as well. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On May 28, 2015 9:21 PM, "RM You" wrote: > Hi Wrenches, I have had a couple of customers want to fabricate their own > PV pole mounts and racks out of iron. Aside from the galvanic corrosion and > weight issues is there anything else I should caution these guys about? Any > stories about failures etc? My druthers are to stay with the engineered > aluminum pole mounts but when you’re dealing with someone with fabrication > experience and the cost for pre-fab is high then the obvious outcome > occurs. If the unit is properly treated/painted I imagine it could last > many years. Is there a way to attach an anode to such a rack or would > simple non conductive insulation between panels and rack be the best answer? > > Ron Young > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Supply side
Why not a simple line side tap? Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine LLC 631-514-4166 www.windsine.org On May 25, 2015 3:00 AM, "frenergy" wrote: > Wrenches, > > Customer currently has a hacked up 200 amp Sylvania meter/mains > panel. He also is averaging a load of 74 KWhrs/day! which will require > about 15 KW system size at this site. Obviously a system this size cannot > backfeed the busses in the load center. Because the exiting panel is a > mess anyway, I'm suggesting it gets changed out. > > What sort of new 200 amp service would facilitate a clean supply > side connection. One thought is have separate Utility meter socket then a > 12 X 12 J-box with a monster power distribution block in it and then a > distribution panel (without the meter socket)...this being a way to insert > a means to grid-tie between the meter and the 200 amp main breaker. A > little spendy but nothing like going to higher amp service to be able to > load side connect. > > A 400 amp panel is not an option as the existing 165' of 3" pvc > underground conduit to the pole currently has 4/0 alum. The utility says > it would have to be 4" for the new cable and the cost $10K+ for the upgrade. > > Other ideas?? > > Thanks in advance > > Bill > > Feather River Solar Electric > > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Hidden freight damage
This has happened to me a bunch. In my opinion, it is very important to unpack all modules and equipment and inspect them before signing for a delivery. We would have the driver unload modules on skids onto ground (if he had a lift gate) or onto dock, and cut open module skids, inspect and take tons of pictures. If everything looked good then sign for delivery and load modules into shop one by one (by hand). Kinda labor intensive, but its better than being stuck having to eat thousands of dollars in damages. Sometimes on damaged module orders, you wouldnt have to refuse complete delivery, just work with your distributor for reimbursement or replacement on damaged items (because you took extra care to document all the damage with pictures). Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® NYSERDA eligible Small Wind installer Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine Inc. 631-514-4166 www.windsine.org On Mon, November 4, 2013 11:47 am, Luke Christy wrote: > Wrenches, > > We have been in business for about 8 years, and up until now, the shipping > gods have smiled upon me, but apparently my luck has run out, as I've had > 2 costly shipping nightmares within a month, and I'm just wondering what > other Wrenches have done to protect themselves from the liability involved > in trusting expensive shipments to the freight carriers. Here's my > situation: > > I recently had a pallet of modules shipped, and it arrived with multiple > broken modules, due apparently to careless handling,and having had > something heavy set on top of the pallet. I have my freight shipments > sent to a neighboring business which is kind enough to receive them for > me, since they have many full time staff who are always available during > business hours to fork shipments off a truck. In this case the forklift > driver did not notice the damage (it was not immediately evident), and the > delivery was signed for. However, upon picking up the pallet an hour > later, I realized that the shipment was damaged, called the freight > company immediately to notify them of the damage, and subsequently filed a > detailed written claim. > > I just got notice that my claim was denied by the carrier, evidently > without considering any of the photos or the written explanation I > submitted with the claim. They simply cited that the shipment had been > signed for without noting damage. > It is clear to me that the carrier was responsible for the damage, yet > apparently because the damage was hidden and the BOL was signed, they can > leave me holding the bag for a significant amount of money. > > This particular incident could have been worse, but it is the first time > I've had it happen and it certainly makes me worried about future > deliveries. It suddenly seems like an unacceptable liability to have > others sign for my deliveries without a thorough inspection. > > I asked my distributor whether the shipments have any insurance on them, > and the person I spoke with didn't know the answer. So my $50 Ebay > shipment is insured, but my $50,000 worth of equipment isn't? My insurance > agent says that I can make a claim on my commercial insurance, but advised > against it in this case, since the loss was only around $1K, and is > guaranteed to raise my future premiums. > > I know that things get damaged or lost all the time in shipment, and I'm > wondering how other businesses handle it. Businesses that do larger > volume must have damaged freight all the time. Is it just impossible to > get freight companies to take responsibility for damage that is not > immediately evident, since they are acting as judge on their own behalf? > Do you just refuse to sign the bill of lading until you've examined all > the contents of the packages (this is a logistical nightmare in most > cases)? Do you just chalk it up to the cost of doing business and/or make > claims to your commercial insurance? > > Would appreciate your thoughts / experiences with this issue. > Thanks. - Luke > > Luke Christy > > NABCEP Certified PV Installation Professional: Certification #031409-25 > NABCEP Certified Solar Heating Installer: Certification #ST032611-03 > CoSEIA Certified PV Installer > > Solar Gain Services, LLC > PO Box 531 > Monte Vista, CO. 81144 > sgsrenewab...@gmail.com > 719.588.3044 > www.sgsrenewables.com > > > > > > > > > > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > Li
Re: [RE-wrenches] Adding Charge Controller(s)
Not sure what this is worth, but with most Kyocera modules that used the same size cells (but different amount of cells per module) you could wire many different VOC modules in series as long as the total number of CELLS per string was the same. It wouldnt matter what the individual module ratings were (as long as the total array was mounted at the same tilt and azimuth, an MPPT charge controller wouldnt know the difference. Ive done this many times with grid tie inverters, and honestly it wouldnt make a difference with a charge controller either. Different age cells/modules may make a slight difference. But what Im suggesting is to count the cells in the strings. Hope that made sense. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® NYSERDA eligible Small Wind installer Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine Inc. 631-514-4166 www.windsine.org On Thu, October 24, 2013 8:51 pm, toddc...@finestplanet.com wrote: > > VMP not VOC > > todd > > > > On Thursday, October 24, 2013 1:26pm, "jay peltz" said: > > > >> Hi Jeffe, >> >> I don't know the specs on those Kyocera, but if they are the same VOC >> then they >> are fine together. >> >> As to a enclosure for the CC's, I'd look at Midnight. >> They have about a million different boxes, you'll find one that will do >> the job >> for you I'm sure. >> >> Depending on the area, you might look at a midnight 150v, or 200v or >> 250v >> controller, as you can then run all in series. >> >> jay >> >> peltz power >> >> >> On Oct 24, 2013, at 1:13 PM, Jesse Dahl wrote: >> >> > Hello, >> > >> > Looked at a system today that consisted of the following: >> > >> > 15 - Kyocera 158W modules >> > 3 - Kyocera 185W modules >> > 1 - Outback MX60 >> > 8 - New Trojan L16RE (48V system) >> > 1 - Xantrex SW Plus >> > >> > 6 months ago he swapped out his old charge controller to the new MX60 >> and >> purchased the new batteries at that time. The array wiring did not >> change and is >> wired in 6 strings of 3. (confusing to the MX60?) >> > >> > He is now adding 4 Kyocera 240W modules. He also purchased another >> MX60 for >> this array. >> > >> > From my perspective, removing the 3 185W modules and getting them on >> their >> own controller would be a better use of the modules. The system >> currently does >> not have any disconnects on the PV side. There are fuses in the >> combiner boxes on >> the array, but no disconnects inside at the charge controller. So >> adding 3 charge >> controllers, and now needing to add GFDI, means a box of some kind needs >> to be >> added to house these breakers. >> > >> > Outbacks GFPs and panel mount breakers will work, but what is the best >> mounting solution for these? One DC Flexware enclosure? It will of >> course allow >> for all the DC OCPD and allow for the landing of the output of the >> charge >> controllers. Or is there another enclosure/OCPD solution I should look >> at? >> > >> > >> > Thanks as always! >> > >> > Jesse >> > >> > >> > >> > >> > >> >> ___ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> > > > Sent from Finest Planet WebMail. > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Troubleshooting Off-grid PV
I second what David is saying. I have seen many failed KC120's as well and they seem to fail most often at the top of the module where some insulating tape has been used to isolate the cell interconnecting bus as they pass over one another on their way to the j-box. There will be some slight evidence of browning inside the lamination looking at the front top of the module (usually but not always). Curious to see what you find. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® NYSERDA eligible Small Wind installer Certified Advanced Tower Climbing, Safety & Rescue Wind/PV Design Engineer Windsine Inc. 631-514-4166 www.windsine.org On Sun, May 27, 2012 7:17 pm, David Katz wrote: > I would check each string. I have seen many failed 120 watt Kyocera > modules. They had a delamination problem. > David Katz > > Sent from my HTC smartphone on the Now Network from Sprint! > > > - Reply message - > From: "Eric Stikes" > To: "RE-wrenches" > Subject: [RE-wrenches] Troubleshooting Off-grid PV > Date: Sun, May 27, 2012 2:51 pm > > > > Hi Wrenches, > > I inherited an off-grid PV system that seems to be significantly under > producing. I have: > > 12 KC120's (~17V 7A each) paired up 2 in series, for 6 strings terminated > on new 15A breakers in a new Midnite combiner, > Output of combiner passes through a 60A breaker then into a SolarBoost 50 > charge controller. An SW4024 ties in the CC, a Kohler 8.5 Gen set, and a > Yuasa 24V battery bank. > > My problem is that I never see more than about 5A (displayed at charge > controller) coming off the array, even in full sun, regardless of the > state of charge of the batteries. I figure I should see, at least once in > a while, closer to between 20-30A. Batteries are, admittedly, passed their > life expectancy as the system was installed in '02 and I am sure this is > part of the problem. I'm thinking that if the batteries are at about 1/2 > capacity (don't own a hydrometer...yet), the controller senses the > batteries are near full SOC even at lower voltage (~24V) and is therefore > attempting to trickle charge even in the bulk stage. Though this is not > how the CC is supposed to function in bulk, obviously, I'm assuming the > old batteries are altering the standard operating conditions of the > system. I've adjusted the Bulk set point on the CC but that doesn't seem > to make a difference. > > I doubt this is part of the problem but the generator is problematic as > well (it has it's own array of maladies). > > Any insight is greatly appreciated. Thanks! > > -- > Eric Stikes > Owner > SunHarvest Solar > +1 (530) 798 - 3738 > www.harvesthesun.com<http://www.harvesthesun.com/> > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] pole mounts
I would think that adding concrete partially up the pole would cause water and condensation to collect near the bottom and not drain properly. This could possibly lead to freezing and the pipe being blown out or damaged, even if the top is completely capped. I would think that you should either completely fill the pipe, or leave it empty with a good layer of gravel at the bottom to allow it to drain properly. I also have no studies to back this up, but it was just a thought. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® NYSERDA eligible Small Wind installer Wind/PV Design Engineer Windsine Inc. 631-514-4166 www.windsine.org On Tue, July 26, 2011 3:05 pm, Dave Palumbo wrote: > Todd, > > > > We add concrete inside of our steel pipe masts, up to grade level, in the > interest of having more weight below ground level. I wouldnât say that > it made the pipe stronger (that better be strong enough as is) but more > weight down low will help keep it rooted in a big wind event. > > > > Dave > > > > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of > toddc...@finestplanet.com > Sent: Tuesday, July 26, 2011 2:50 PM > To: RE-wrenches > Subject: [RE-wrenches] pole mounts > > > > Wrenches, > > > > Fact or fiction: Adding concrete to the inside of a pole mount pipe makes > it stronger. > > > > Thanks, > > > > Todd > > > > > Sent from Finest Planet WebMail. > > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Interfacing an Air 403 wind generator
The Air403 would need a battery to operate. It will not work without one, so if you are removing all batteries because of inability to maintain them, this may not work. If you DO keep a small battery onsite for the AIR403 to charge, it can be interfaced to the grid with a battery based inverter such as an Outback GVFX of the appropriate voltage for the battery. This will most likely prove uneconomical, but it is certainly do-able. Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® NYSERDA eligible Small Wind installer Wind/PV Design Engineer Windsine Inc. 631-514-4166 www.windsine.org On Thu, May 5, 2011 2:15 pm, Peter Talmage wrote: > Hi Dana, > > The battery and all associated equipment is being totally removed as the > folks are now unable to do the required maintenance. They really love the > little Air 403 and would like to interface it if at all possible even if > it doesn't make economical sense. > > Peter > > --- On Thu, 5/5/11, Dana wrote: > > From: Dana > Subject: [RE-wrenches] Interfacing an Air 403 wind generator > To: "'RE-wrenches'" > Date: Thursday, May 5, 2011, 1:32 PM > > The Air is DC, wouldnât it just feed the battery bank and  there for > less from the PV to the battery bank and therefore more PV to go to the > grid tieâ¦â¦â¦  It is a mighty small unit to go to the effort to grid > tie unless he has a 18MPH+ yearly wind speed. If he has that much wind go > for a SWWP - Skystream wind turbine that is UL listed for grid tie.  Dana > OrzelGreat Solar Works, IncE - d...@solarwork.comv - 970.626.5253F - > 970.626.4140C - 970.209.4076web - www.solarwork.com  "Responsible > Technologies for Responsible People since 1988"Do not ever believe > anything, but seriously trust through action.  From: > re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Peter > Talmage > Sent: Thursday, May 05, 2011 11:26 AM > To: RE-wrenches > Subject: [RE-wrenches] Interfacing an Air 403 wind generator  I have a > client with an independent power system who is going utility interfaced. > We are putting the 24 volt arrays on Ephase inverters. He wants the Air > 403 to be interfaced as well. Has anyone done this and if so, how ? > Thanks > > Peter Talmage, P.E. > > Energy and Design  > -Inline Attachment Follows- > > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Sanyo problems
If possible, I would like to see the article also. We have many installs with Sanyo HIT. Have not had any problems to date. r...@windsine.org Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® NYSERDA eligible Small Wind installer Wind/PV Design Engineer Windsine Inc. 631-514-4166 www.windsine.org On Fri, April 1, 2011 11:46 am, Darryl Thayer wrote: > If possible I would like to see report > daryl_so...@yahoo.com > > > Â > > > > > From: August Goers > To: RE-wrenches > Sent: Fri, April 1, 2011 9:32:45 AM > Subject: Re: [RE-wrenches] Sanyo problems > > > Marco - I'd like to see the pdf as well if you don't mind. Thanks, August > Â > aug...@luminalt.com > Â > From:re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Marco > Mangelsdorf > Sent: Thursday, March 31, 2011 7:31 PM > To: 'RE-wrenches' > Subject: [RE-wrenches] Sanyo problems > Â > In the March issue of Photon magazine itâs being reported that Sanyoâs > HiT > modules may be suffering from MWs worth of failures. > Â > If youâre unable to track down the article on-line, let me know and I > can send > you a PDF version. > Â > marco___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Outback Mate Controller Issues
Use the silicone grease. It has saved me many a headache. Dry RJ-45 connections are always problematic after a few years if not kept in a carefully controlled climate :-/ Roy Rakobitsch NABCEP Certified Small Wind Installer® NABCEP Certified Solar PV Installer® NYSERDA eligible Small Wind installer Wind/PV Design Engineer Windsine Inc. 631-514-4166 www.windsine.org On Thu, December 9, 2010 3:09 pm, Roy Butler wrote: > > > >http-equiv="Content-Type"> > > > I'm seeing a commonality here2 years. Because I've also had this > issue.2-3 years into the Mate service life. > How long do those coin batteries last in the Mates and could that > even be an issue? > Roy Butler > NABCEP Certified Solar PV Installer® > NYSERDA eligible PV & wind installer > PA Sunshine Program Approved PV Installer > Four Winds Renewable Energy, LLC > 8902 Route 46 > Arkport, NY 14807 > 607-324-9747 > > href="http://www.four-winds-energy.com";>www.four-winds-energy.com > > Although no trees were killed in the sending of this message, > a large number of electrons were terribly inconvenienced. > > > > > On 12/9/2010 2:56 PM, Starlight Solar, Larry Crutcher wrote: >type="cite"> > > > > > Interesting. A customer from > Baja, on the Sea of Cortez has a similar problem after 2 > years trouble free. No ESD potential there. Rebooting the > remote did not help. Did Outback pant a time > bomb!! > > Larry > > > - Original Message - > From: moz-do-not-send="true" title="solarwo...@gmail.com" > href="mailto:solarwo...@gmail.com";>Kirpal Khalsa > To: moz-do-not-send="true" > title="re-wrenches@lists.re-wrenches.org" > href="mailto:re-wrenches@lists.re-wrenches.org";>RE-wrenches > > Sent: Thursday, December > 09, 2010 9:30 AM > Subject: [RE-wrenches] > Outback Mate Controller Issues > > > Good Morning All..we have recently had 2 off grid outback > systems go haywire.both have been running perfectly for more > than 2 years.then all of a sudden the mate stops allowing AC > inputs.a variety of troubleshooting indicated all components > were fine.Outback support took care to help with the > confirmation that all the components were fine..finally with > us being stumped, tech support asked us to unplug the mate from > the hub and replug it back in.Voila! everything started > working properly again..only setting that seemed to be > changed and needed to be reset was that the chargers on the > inverters were turned off and a few button pushes later and this > was also restored.. > Anyone else having any similar experiences? This is puzzling > as > we haven't ever had this kind of problem and for some > coincidental reason we had two systems both with long term > smooth operating histories have the same issue..we > appreciated the quick, accessible, competent support from > Outback tech support but remain puzzled as to what may have > triggered these odd events..feedback appreciated! > > > -- > Sunny Regards, > Kirpal Khalsa > NABCEP Certified Solar PV Installer > Renewable Energy Systems > href="http://www.oregonsolarworks.com";>www.oregonsolarworks.com > 541-218-0201 m > 541-592-3958 o > > ___ > List sponsored by Home Power magazine > > List Address: href="mailto:RE-wrenches@lists.re-wrenches.org";>RE-wrenches@lists.re-wrenches.org > > Options & settings: > href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org";>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org";>http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > href="http://www.re-wrenches.org/etiquette.htm";>www.re-wrenches.org/etiquette.htm > > Check