lancelot Posted June 1, 2016 Share Posted June 1, 2016 I have the following system installed: Schneider XW+7048 Inverter Charge Controller MPPT 60 150 12 * 310w Renesola Solar panels 24 * Willard RT17 560ah flooded 2V batteries SCP I require anyone with Schneider expertise that can check my installation, I want to make sure everything is done correctly. (Off course I will pay) Pretoria East area Quote Link to comment Share on other sites More sharing options...
superdiy Posted June 2, 2016 Share Posted June 2, 2016 That chimney is going to give you partial shading at some point in time. Why was the panels not moved higher up the roof and those two next to the flat panel moved somewhere else? I'm not familiar with your inverter, but I assume one serial string of panels - if only one cell of one panel is in the shade it effects the total PV generation. Quote Link to comment Share on other sites More sharing options...
bushman10 Posted June 5, 2016 Share Posted June 5, 2016 Who did your Schneider installation? I have had a bit of a nightmare with a certain installer calling themselves experts Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
lancelot Posted June 28, 2016 Author Share Posted June 28, 2016 Photo was taken at about 8 am so shade never covers panels during day, even in winter, I made sure of that. 4 strings, 3 in series. Did the installation myself. Regie 1 Quote Link to comment Share on other sites More sharing options...
SilverNodashi Posted June 28, 2016 Share Posted June 28, 2016 what problems are you having? Quote Link to comment Share on other sites More sharing options...
lancelot Posted June 29, 2016 Author Share Posted June 29, 2016 My inverter is still using some power from the grid even when the batteries are fully charged. It's a 7kw inverter and my usage will be 3kw then it will draw 800w from the grid. I have set Load Shaving On at 0A and Sell to grid on at 0A etc etc on the Schneider but still. Quote Link to comment Share on other sites More sharing options...
___ Posted June 29, 2016 Share Posted June 29, 2016 How do you measure the 800w? Could be just a really bad power factor. I must get that electricity meter thing of mine onto the play store. It's an app that uses the phone camera to count flashes on the prepaid meter led and tell you your power use. Sent from my GT-I9195 using Tapatalk Quote Link to comment Share on other sites More sharing options...
lancelot Posted June 29, 2016 Author Share Posted June 29, 2016 The Schneider Inverter has a Control Panel which shows total load and power imported or exported to the Grid. Attached also a graph of elec usage of Yesterday from the Tshwane Prepaid Smart meter.My monthly usage is still about 270 units which is about 50% of my total usage. Quote Link to comment Share on other sites More sharing options...
Hugo Posted July 14, 2016 Share Posted July 14, 2016 Hi lancelot, Your charge controller is slightly undersized. The datasheet for the MPPT 60 150 states the max output power is 3500W, but this is at 60V. The limiting factor is the current output of 60A which means 2880W at 48V. The XW+ will always draw some current from the grid if sell is disabled. Also the load shaving function will only draw down the battery voltage to the value of Grid Supp Volts setting.and will switch off completely at V= Recharge +0.5V. Have you tried enabling Enhanced Grid Support mode instead of load shave? Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted July 14, 2016 Share Posted July 14, 2016 6 minutes ago, Hugo said: The limiting factor is the current output of 60A which means 2880W at 48V. Probably closer to 3200W as battery voltage should be above 54V under charge. Quote Link to comment Share on other sites More sharing options...
Hugo Posted July 14, 2016 Share Posted July 14, 2016 Agreed. I did say "slightly" Chris Hobson 1 Quote Link to comment Share on other sites More sharing options...
Mac_2022 Posted April 7, 2023 Share Posted April 7, 2023 Hi Lancelot, Just stumbled on this post. Did you manage to get a true Schiender installer who understands this system? i had my system installed awhile back, however i have the same issues. I have two 60/150 MPPT, with a 5.5Kw solar panel capacity. I seem to max out at 3200w daily generation irrespective of the sun being high and also have the system constantly drawing from the grid. Thanks. Quote Link to comment Share on other sites More sharing options...
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