May 10, 20251 yr Hello brothers.I am in the process of installing a solar energy system.The inverter is from Deye SUN-8K-SG05LP1-EU-SM2【B】30240102201654_单页 SUN-(3.6-8)K-SG05LP1-EU-SM2 德业英文 157g铜版纸 210285mm 彩色印刷And solar panels TSM-NEG21C.20 from Trina solar.DT-M-0042 E Datasheet_Vertex_NEG21C.20_EN_2023_D_webthe technical specifications below.The thing I want to make sure of:I have 9 solar panels.Can they be connected the all 9 panels in one series without any problems and risk of damaging the inverter? Or should I install just 8 panels and drop one of the group?Knowing that the area is on the sea and the temperature in winter does not drop to more than 15 or 10 degrees CelsiusThanks alot. Edited May 10, 20251 yr by Taleb
May 10, 20251 yr 23 minutes ago, Taleb said:Can they be connected the all 9 panels in one series without any problems and risk of damaging the inverter? Or should I install just 8 panels and drop one of the group?You can connect 9 panels in series. 15 degrees below STC you will still be below 500V. However, you are running above the MPPT range. Why not do 4 panels and 5 panels on the two MPPTs?
May 10, 20251 yr 10 hours ago, Taleb said:Hello brothers.I am in the process of installing a solar energy system.The inverter is from Deye SUN-8K-SG05LP1-EU-SM2【B】30240102201654_单页 SUN-(3.6-8)K-SG05LP1-EU-SM2 德业英文 157g铜版纸 210285mm 彩色印刷And solar panels TSM-NEG21C.20 from Trina solar.DT-M-0042 E Datasheet_Vertex_NEG21C.20_EN_2023_D_webthe technical specifications below.The thing I want to make sure of:I have 9 solar panels.Can they be connected the all 9 panels in one series without any problems and risk of damaging the inverter? Or should I install just 8 panels and drop one of the group?Knowing that the area is on the sea and the temperature in winter does not drop to more than 15 or 10 degrees CelsiusThanks alot.Hi Taleb 9 panels connected 9S on 1 mppt will be in the sweet spot. So no problem 9 x 710w = 6390w you are allowed 6400w/mppt. In any case you will most probably only achieve ~5kwp in real life conditions.
May 10, 20251 yr 4 hours ago, TaliaB said:Hi Taleb 9 panels connected 9S on 1 mppt will be in the sweet spot.Sorry, the MPPT range is fine. Only split in two strings if shading is a risk. Edited May 10, 20251 yr by frivan
May 11, 20251 yr Author Thank you, my dear brothers, for your interaction and responses. God bless you
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