[RE-wrenches] Manual Two Way (Bypass) DC Transfer Switch
Has anyone come across a 600v dc rated two way bypass transfer switch? I am designing an ac coupled system and would like to have the non-battery inverter's array available for the battery inverter if the utility goes down for an extended period of time (hurricane or ice storm). I can do it with two dc disconnect switches as long as they are operated in proper sequence, but I thought a bypass switch would be more fool proof or safer for the owner. Thanks for any leads. Chris -- Christopher Warfel, P.E. ENTECH Engineering, Inc. Energy Utilization Experts (401)466-8978 The information contained within this communication shall be considered confidential and shall not be retransmitted without knowledge of the sender. Please contact us if this email reached you in error. Thank you. ___ 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] Solar product whole sellers with good reputation
There is one small company in the Northeast that has been very good and that is New England Solar. They are mostly off grid, but they always get the orders right and get items to me very quickly. Chris On 4/24/2012 7:51 PM, Peter Parrish wrote: Dear William, I too had a very difficult interaction with DC-Power Systems a couple of years ago -- before they merged (whatever) with Solar Depot. Since they are now one and the same company, and it looks like the DC-Power Systems folks (and their approach to doing business) are asserting control over the combined entity, I would like to communicate with you off-line. Please feel free to contact me at peter...@pobox.com and I will do my best to provide you with a recitation of my travails and their resolution. It might help you in your present predicament. Regards, -Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP Cert. 031806-26 peter.parr...@calsolareng.com Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Miller Sent: Tuesday, April 24, 2012 4:11 PM To: RE-wrenches Subject: Re: [RE-wrenches] Solar product whole sellers with good reputation Friends: Solar Depot is trying to collect $14,000 from me and I have never ordered a thing from them. They have refused to acknowledge they have made a mistake. They even tried to attach my bond. I do not recommend anyone do business with them or DC Power Systems. Beware of the big wholesalers. William At 10:03 AM 4/24/2012, Chris Daum wrote: I'm a big fan of Sunwize, but then my rep is really good; don't know if everyone has a good rep. Hitney is also good. ___ 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 -- Christopher Warfel, P.E. ENTECH Engineering, Inc. Energy Utilization Experts (401)466-8978 The information contained within this communication shall be considered confidential and shall not be retransmitted without knowledge of the sender. Please contact us if this email reached you in error. Thank you. ___ 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] Manual Two Way (Bypass) DC Transfer Switch
David Click provided a document from Outback that describes the way this concept works, making my need for the dc transfer switches unnecessary. Thanks David, hats off. On 4/25/2012 6:16 AM, Christopher Warfel wrote: Has anyone come across a 600v dc rated two way bypass transfer switch? I am designing an ac coupled system and would like to have the non-battery inverter's array available for the battery inverter if the utility goes down for an extended period of time (hurricane or ice storm). I can do it with two dc disconnect switches as long as they are operated in proper sequence, but I thought a bypass switch would be more fool proof or safer for the owner. Thanks for any leads. Chris -- Christopher Warfel, P.E. ENTECH Engineering, Inc. Energy Utilization Experts (401)466-8978 The information contained within this communication shall be considered confidential and shall not be retransmitted without knowledge of the sender. Please contact us if this email reached you in error. Thank you. ___ 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] Solar product whole sellers with good reputation
I use Solar Depot and AEE Solar. Solar Depot's website is tough to navigate, making orders complicated. AEE has been super easy to use, PO's work great for all my online orders, and my Rep gets back to me right away. I have had some interactions with Backwoods through a past customer and they seemed good too. Jesse Sent from my iPhone On Apr 25, 2012, at 7:25 AM, Christopher Warfel cwar...@entech-engineering.com wrote: There is one small company in the Northeast that has been very good and that is New England Solar. They are mostly off grid, but they always get the orders right and get items to me very quickly. Chris On 4/24/2012 7:51 PM, Peter Parrish wrote: Dear William, I too had a very difficult interaction with DC-Power Systems a couple of years ago -- before they merged (whatever) with Solar Depot. Since they are now one and the same company, and it looks like the DC-Power Systems folks (and their approach to doing business) are asserting control over the combined entity, I would like to communicate with you off-line. Please feel free to contact me at peter...@pobox.com and I will do my best to provide you with a recitation of my travails and their resolution. It might help you in your present predicament. Regards, -Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP Cert. 031806-26 peter.parr...@calsolareng.com Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Miller Sent: Tuesday, April 24, 2012 4:11 PM To: RE-wrenches Subject: Re: [RE-wrenches] Solar product whole sellers with good reputation Friends: Solar Depot is trying to collect $14,000 from me and I have never ordered a thing from them. They have refused to acknowledge they have made a mistake. They even tried to attach my bond. I do not recommend anyone do business with them or DC Power Systems. Beware of the big wholesalers. William At 10:03 AM 4/24/2012, Chris Daum wrote: I'm a big fan of Sunwize, but then my rep is really good; don't know if everyone has a good rep. Hitney is also good. ___ 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 -- Christopher Warfel, P.E. ENTECH Engineering, Inc. Energy Utilization Experts (401)466-8978 The information contained within this communication shall be considered confidential and shall not be retransmitted without knowledge of the sender. Please contact us if this email reached you in error. Thank you. ___ 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] Solar product whole sellers with good reputation
Thanks Jesse, I am putting together another item list and will see how the ordering/pricing works. Chris On 4/25/2012 10:25 AM, Jesse Dahl wrote: I use Solar Depot and AEE Solar. Solar Depot's website is tough to navigate, making orders complicated. AEE has been super easy to use, PO's work great for all my online orders, and my Rep gets back to me right away. I have had some interactions with Backwoods through a past customer and they seemed good too. Jesse Sent from my iPhone On Apr 25, 2012, at 7:25 AM, Christopher Warfelcwar...@entech-engineering.com wrote: There is one small company in the Northeast that has been very good and that is New England Solar. They are mostly off grid, but they always get the orders right and get items to me very quickly. Chris On 4/24/2012 7:51 PM, Peter Parrish wrote: Dear William, I too had a very difficult interaction with DC-Power Systems a couple of years ago -- before they merged (whatever) with Solar Depot. Since they are now one and the same company, and it looks like the DC-Power Systems folks (and their approach to doing business) are asserting control over the combined entity, I would like to communicate with you off-line. Please feel free to contact me at peter...@pobox.com and I will do my best to provide you with a recitation of my travails and their resolution. It might help you in your present predicament. Regards, -Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP Cert. 031806-26 peter.parr...@calsolareng.com Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Miller Sent: Tuesday, April 24, 2012 4:11 PM To: RE-wrenches Subject: Re: [RE-wrenches] Solar product whole sellers with good reputation Friends: Solar Depot is trying to collect $14,000 from me and I have never ordered a thing from them. They have refused to acknowledge they have made a mistake. They even tried to attach my bond. I do not recommend anyone do business with them or DC Power Systems. Beware of the big wholesalers. William At 10:03 AM 4/24/2012, Chris Daum wrote: I'm a big fan of Sunwize, but then my rep is really good; don't know if everyone has a good rep. Hitney is also good. ___ 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 -- Christopher Warfel, P.E. ENTECH Engineering, Inc. Energy Utilization Experts (401)466-8978 The information contained within this communication shall be considered confidential and shall not be retransmitted without knowledge of the sender. Please contact us if this email reached you in error. Thank you. ___ 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 -- Christopher Warfel, P.E. ENTECH Engineering, Inc. Energy Utilization Experts (401)466-8978 The information contained within this communication shall be considered confidential and shall not be retransmitted without knowledge of the sender. Please contact us if this email reached you in error. Thank you. ___ 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-wrenches] Power Quality
I would like to follow up on a discussion of under what conditions an anti-islanding compliant inverter would have problems with the utility power quality and off grid inverters would have with generator-derived power quality. I think that Bill Brooks pointed to a document a while ago about transient events, and we all know (or should know) the +/- 10% VAC and +/- 0.1 Hz requirements. Bill would you be so kind as to point us there again? What I would like to understand is the following: Is there a power quality analyzer (e.g. Fluke 430 Series II) out there can asses power quality and predict compatibility with the various grid-tied and off grid inverters? What I imagine is a follows: -- Fire up an generator (e.g. Honda Eu3000iS), load it down with a reasonable resistive load (e.g. 1,500 kW), and look for VAC, freq, harmonic distortion, transients -- and come up with a way to assess whether or not an off-grid inverter would work with the generator. -- Monitor utility power and provide the same answer for grid-tied inverter. - Peter Parrish Peter T. Parrish, Ph.D., Chair, Alternative Energy and Transportation Technology College of the Canyons Room 700F 17200 Sierra Hwy. Santa Clarita, CA 91351 peter.parr...@canyons.edu O: (661) 362-3888 C: (323) 839-6108 ___ 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] Solar product whole sellers with good reputation
I've been using Conergy for several years and I've had very few problems. I order everything via e-mail or telephone. Carl HansenSun Elect. On 4/25/2012 8:25 AM, Jesse Dahl wrote: I use Solar Depot and AEE Solar. Solar Depot's website is tough to navigate, making orders complicated. AEE has been super easy to use, PO's work great for all my online orders, and my Rep gets back to me right away. I have had some interactions with Backwoods through a past customer and they seemed good too. Jesse Sent from my iPhone On Apr 25, 2012, at 7:25 AM, Christopher Warfelcwar...@entech-engineering.com wrote: There is one small company in the Northeast that has been very good and that is New England Solar. They are mostly off grid, but they always get the orders right and get items to me very quickly. Chris On 4/24/2012 7:51 PM, Peter Parrish wrote: Dear William, I too had a very difficult interaction with DC-Power Systems a couple of years ago -- before they merged (whatever) with Solar Depot. Since they are now one and the same company, and it looks like the DC-Power Systems folks (and their approach to doing business) are asserting control over the combined entity, I would like to communicate with you off-line. Please feel free to contact me at peter...@pobox.com and I will do my best to provide you with a recitation of my travails and their resolution. It might help you in your present predicament. Regards, -Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP Cert. 031806-26 peter.parr...@calsolareng.com Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Miller Sent: Tuesday, April 24, 2012 4:11 PM To: RE-wrenches Subject: Re: [RE-wrenches] Solar product whole sellers with good reputation Friends: Solar Depot is trying to collect $14,000 from me and I have never ordered a thing from them. They have refused to acknowledge they have made a mistake. They even tried to attach my bond. I do not recommend anyone do business with them or DC Power Systems. Beware of the big wholesalers. William At 10:03 AM 4/24/2012, Chris Daum wrote: I'm a big fan of Sunwize, but then my rep is really good; don't know if everyone has a good rep. Hitney is also good. ___ 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 -- Christopher Warfel, P.E. ENTECH Engineering, Inc. Energy Utilization Experts (401)466-8978 The information contained within this communication shall be considered confidential and shall not be retransmitted without knowledge of the sender. Please contact us if this email reached you in error. Thank you. ___ 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] Solar product whole sellers with good reputation
Dear All, In 26 years of dealing with all manner of solar distributors, from solar pool heating to solar hot water to PV, I have never, ever, ever met any company anywhere or at any time that even comes close to the GREAT customer service we am getting from SunPower. Day or night we can call with design, order or Internet questions and some articulate person will be on the phone, talking to us live and answering any question we may have right there on the spot. Additionally, they are constantly providing training webinars and workshops on every facet surrounding photovoltaics. We have only carried the SunPower product for about 2 years. We love the product and we love that quality so sorely lacking everywhere else... Supercalifragilisticexpialidocious customer service. We Love SunPower! Andrew Koyaanisqatsi President Solar Energy Solutions, Inc. Since 1987, Moving Portland and Beyond to an Environmentally Sustainable Future. 503-238-4502 www.solarenergyoregon.com Better one's House too little one day than too big all the Year after. From: Carl Hansen solar...@cybermesa.com To: re-wrenches@lists.re-wrenches.org Sent: Wednesday, April 25, 2012 11:29 AM Subject: Re: [RE-wrenches] Solar product whole sellers with good reputation I've been using Conergy for several years and I've had very few problems. I order everything via e-mail or telephone. Carl HansenSun Elect. On 4/25/2012 8:25 AM, Jesse Dahl wrote: I use Solar Depot and AEE Solar. Solar Depot's website is tough to navigate, making orders complicated. AEE has been super easy to use, PO's work great for all my online orders, and my Rep gets back to me right away. I have had some interactions with Backwoods through a past customer and they seemed good too. Jesse Sent from my iPhone On Apr 25, 2012, at 7:25 AM, Christopher Warfelcwar...@entech-engineering.com wrote: There is one small company in the Northeast that has been very good and that is New England Solar. They are mostly off grid, but they always get the orders right and get items to me very quickly. Chris On 4/24/2012 7:51 PM, Peter Parrish wrote: Dear William, I too had a very difficult interaction with DC-Power Systems a couple of years ago -- before they merged (whatever) with Solar Depot. Since they are now one and the same company, and it looks like the DC-Power Systems folks (and their approach to doing business) are asserting control over the combined entity, I would like to communicate with you off-line. Please feel free to contact me at peter...@pobox.com and I will do my best to provide you with a recitation of my travails and their resolution. It might help you in your present predicament. Regards, -Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP Cert. 031806-26 peter.parr...@calsolareng.com Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Miller Sent: Tuesday, April 24, 2012 4:11 PM To: RE-wrenches Subject: Re: [RE-wrenches] Solar product whole sellers with good reputation Friends: Solar Depot is trying to collect $14,000 from me and I have never ordered a thing from them. They have refused to acknowledge they have made a mistake. They even tried to attach my bond. I do not recommend anyone do business with them or DC Power Systems. Beware of the big wholesalers. William At 10:03 AM 4/24/2012, Chris Daum wrote: I'm a big fan of Sunwize, but then my rep is really good; don't know if everyone has a good rep. Hitney is also good. ___ 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 -- Christopher Warfel, P.E. ENTECH Engineering, Inc. Energy Utilization Experts (401)466-8978 The information contained within this communication shall be considered confidential and shall not be retransmitted without knowledge of the sender. Please contact us if this email reached you in error. Thank you. ___ 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:
Re: [RE-wrenches] Decentralized power
Phil, You are right, it is a different tack on how to think of energy. Too bad that the solar installation shown isn't of the same quality as the article. Bill Loesch Solar 1 - Saint Louis Solar On 17-Apr-12 12:28 AM, Philip wrote: Just wanted to share with the list one of the better mainstream articles on RE that I've seen in a while. For me it really captures a new way of thinking about the true meaning of independence, autonomy, responsibility and community. http://www.theatlantic.com/technology/archive/2012/04/what-we-talk-about-when-we-talk-about-the-decentralization-of-energy/255873/ This is a great list, Phil ___ 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 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.1913 / Virus Database: 2411/4936 - Release Date: 04/14/12 ___ 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
