Posted January 2, 20232 yr Hi Guys Please help. I ave installed a Luxpower SNA5000 inverter with a Shoto 5.1Kv LI battery . It has been running great the last few weeks without any issues. I have now added 4x 495W Canadian Solar Panels. It shows a 120V charge on the inveter but it does not show that the panels re feeding into the inverter itself. How do I enable this ? Any settings that specifically has to be enabled? ( I have enabled the hybrid function (16) but Im am still dumbfounded. Please help a idiot like me...
January 2, 20232 yr Am not familiar with the Luxpower units. From what I can see on the display it looks like you are running from the grid b 0v? and your battery is fully charged? If you have another grid input it could be that the grid is running the house, the batteries are full so no solar needed? I would check the Working mode, and set it to run from solar & battery then utility. It looks like it maybe in Utility, then Solar and Battery mode? Also is this a second string that the inverter can take? was it recently added? if so it maybe that the 120v is not high enough for it to produce power, although i see the spec says 100-385 vdc is the operating range? so it should work. is the polarity of the string correct? positive and negative from array connected to pos - neg on inverter? I expect one would damage the inverter if incorrectly conencted, but maybe worth checking? Hopefully some other luxpower users will see your question, and give better suggestions?
January 2, 20232 yr What is the MPPT startup Voltage? Also around 120V? Could be that it's just borderline and that another panel gives a clearly high enough startup.
January 2, 20232 yr 36 minutes ago, GreenFields said: What is the MPPT startup Voltage? Also around 120V? Could be that it's just borderline and that another panel gives a clearly high enough startup. Think it is the source power setting. The Inverter claims a MPPT voltage range of 100-385Vdc https://www.solarpanelenergy.co.za/docs/Luxpower 5KW OffGrid Inverter2022.pdf
January 2, 20232 yr Author Thank you guys. I never realised that the unit has a MPPT already built in. Just had to enable this . It is now drawing power from the panels. thanks again for your help.
July 7, 20231 yr Hi GHViviers, you mentioned you just needed to enable the MPPT to get the panels to work? I am installing 2 x 550W panels on a SNA and have the same issue, the voltage of the two is to low and does not seem to be enough over the 100v startup. Where and how did you enable it or did you end up putting another panel? Thank you.
July 7, 20231 yr 2 hours ago, YBF.Helgard said: Hi GHViviers, you mentioned you just needed to enable the MPPT to get the panels to work? I am installing 2 x 550W panels on a SNA and have the same issue, the voltage of the two is to low and does not seem to be enough over the 100v startup. Where and how did you enable it or did you end up putting another panel? Thank you. You need to get the voltage above the startup threshold, so add more panels as 2 is not enough.
July 7, 20231 yr 13 hours ago, YBF.Helgard said: Hi GHViviers, you mentioned you just needed to enable the MPPT to get the panels to work? I am installing 2 x 550W panels on a SNA and have the same issue, the voltage of the two is to low and does not seem to be enough over the 100v startup. Where and how did you enable it or did you end up putting another panel? Thank you. I would use minimum of 4 x 550w panels in series that will give you 49.94voc x 4 = 199.76 call it 200v 5 x 550w panels in series will be in the sweet spot of~250v Edited July 8, 20231 yr by TaliaB
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