January 5, 20251 yr I have a Voltronic Axpert VM III 6kW (Wifi Version) and it seems have a high self consumption, of about 100 to 150W in no load conditions. Is it normal? Main CPU firmware: 55.06 Secundary CPU firmware: 19.16 PV: 4x580Wp Battery: 8x 12V85Ah Lead Acid Thank you Edited January 5, 20251 yr by JFFP94
January 6, 20251 yr 13 hours ago, JFFP94 said: I have a Voltronic Axpert VM III 6kW (Wifi Version) and it seems have a high self consumption, of about 100 to 150W in no load conditions. Is it normal? That seems a little high; 5 kVA models draw about 50 W with the DC->AC converter running, and 15 W otherwise. Add 50% because it's a 6 kW model. Actually, my figures are based on a now quite old PF0.8 model, i.e. the DC-AC converter is rated at 5 kVA, but the DC-DC converter is rated at 4 kW. So a true 6 kW model might draw a little more than 75 W when the DC->AC converter is operating. In these later models, now that I think about it, might have the DC->AC converter active at all times, unless you are in SBU output source priority. And maybe also remove PV input as well.
January 6, 20251 yr Author Thank you very much for you fast and complete reply!! This inverter in about 16h discharge 8x12V75Ah (20h) = 7 200Wh until 47V. (Lets consider 70% DOD, Im halving their life I know 🤐) 80% for efficiency in discharge ( Usually I have 70 to 80% of charge/discharge cycle, lets consider worst situation because at moment temperature drops from 10C to 0C at night) 20% loss of capacity for temperatures near of zero And we have 7200*0,7*0,8*0,8= 3225Wh 3200 Wh in 16h is about 200W. If this firmware does fans run at full time when shouldn't, could explain it? At moment I left it USB for be easier for costumer charge batteries with generator, you think that in SBU mode could have less consumption?
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