Hi Chris: Keeping in mind Todd's comments I'm not sure how your system is set up, but if it has Schneider MPPT charge controllers, then it should be set up in enhanced sell mode.
Enhanced sell mode coordinates the sell power so that it always matches the solar harvest power, moment by moment. Using that setting will also charge the battery with a three stage charging algorithm every morning while exporting any excess solar power available which is not needed for charging. Please contact me offline of you would like to go over the settings for this mode of operation. JARMO _____________________________________________________________________________________ Jarmo Venalainen | Schneider Electric | Solar Business | CANADA | Training & Development Specialist - Senior Phone: +604-422-2528 | Fax: +604-420-1591 | Mobile: +604-505-0291 Email: [email protected] | Site: www.SEsolar.com | Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 *** Please consider the environment before printing this e-mail From: [email protected] To: "RE-wrenches" <[email protected]>, Date: 01/24/2015 10:37 AM Subject: Re: [RE-wrenches] Schneider 6048 power output fluctuating widely Sent by: "RE-wrenches" <[email protected]> im not sure how the "brand-x" inverters work, but my home system's gvfx3648 suffers from high line voltage, where often when selling at max, the line voltage at the inverter will creep up to the 130 vac limit. when this happens, the inverter doesn't cycle off and on as suggested below, but it actually throttles back on selling current to keep the voltage below the 130 vac limit. this raises the battery voltage until the charge controller throttles back on the incoming pv current to match. todd On Saturday, January 24, 2015 8:17am, "Christopher Warfel" <[email protected]> said: Thank you, I will see if that is the solution and get back to either way. Chris On 1/23/2015 3:39 PM, [email protected] wrote: Hi: >From your description of the problem and the video, I suspect the problem is due to: 1. The inverter is exporting very near full power. 2. The grid voltage rises which at the same AC current results in larger export power flow above the inverters limit. 3. The inverter stops exporting due to reaching its power limit 4. The inverter again starts exporting..... 5. Reaches power limit and stops. 6.etc....... I.E. since the inverter is working close to its power limit on a grid with fluctuating voltage, it goes in and out of max power limit. One way to test if this is the cause is to reduce the Sell Amps so that you are not operating at the power limit of the inverter. JARMO _____________________________________________________________________________________ Jarmo Venalainen | Schneider Electric | Solar Business | CANADA | Training & Development Specialist - Senior Phone: +604-422-2528 | Fax: +604-420-1591 | Mobile: +604-505-0291 Email: [email protected] | Site: www.SEsolar.com | Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 *** Please consider the environment before printing this e-mail From: Christopher Warfel <[email protected]> To: [email protected], Date: 01/23/2015 12:07 PM Subject: [RE-wrenches] Schneider 6048 power output fluctuating widely Sent by: "RE-wrenches" <[email protected]> We installed a XW 6048 that has wide power output fluctuations over several seconds. Lights flicker, and the inverter squeals. It happens multiple times in a minute The inverter was replaced to no avail. I suspect the local utility's poor line maintenance. When the inverter begins to drop off line, the voltage sags from 123 to 117. This is still within normal parameters, so I don't understand why the inverter would begin to power down. Here is a youtube video of it if anyone has ever seen this before. Schneider has assisted us several times, but cannot find any reason for this happening as a result of their technology. http://youtu.be/EqMwv44p-lc http://youtu.be/ADaL-gEbj4w Thank you, Chris _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. ______________________________________________________________________ _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org -- Christopher Warfel, President ENTECH Engineering, Inc. PO Box 871, Block Island, RI 02807 401-466-8978 Sent from Finest Planet WebMail. ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. ______________________________________________________________________ _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
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