Taleb

Thank you, my dear brothers, for your interaction and responses. God bless you

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_web the 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 Celsius Thanks alot.

@GreenFields & @TaliaB Thank you for your lovely responses. I appreciate it. Best regards.

Hello brothers I'm trying to build a solar system but I'm confused about some of the technical specifications. I bought an inverter Axpert iii 4kw and these are its technical specifications as shown in the pictures: And i want to buy solar panels from Jinko Solar. These are the specifications of panels as shown in the picture: When looking at the MPPT voltage range you find the voltage range is 120~450VDC and logically connecting 3 panels will give about 127vdc and this number falls within the required range, But if you take a look into the inverter catalog You will find the star-up voltage of MPPT is 150VDC and this number is greater than 127V so logically if you add a fourth panel, you will get 169V from the four panels, and this number falls within MPPT Voltage range 120~450VDC also greater than the star-up voltage 150VDC, Well it seems everything is perfect. Oh no wait. What is this thing called "Nominal operating voltage:320VDC?!" Can someone explain what this means?! Is it necessary for the panels voltage to reach this number?! Or is this the ideal voltage that the MPPT works with and it can work at lower voltages without problems.?! Finally, I have some questions: The first question: What is the minimum number of panels that can be installed and the MPPT can work without problems?! The second question: What is the ideal number of panels that prefer a combination?! The third question:If the maximum number of panels that I can provide is 4 or 5 panels,Is it preferable to replace this 4KW inverter with another 3KW inverter that has "Nominal operating voltage:240VDC" Or there will be no difference? Thank you all

@Coulomb @GMAC @GreenFields @Scorp007 You have all my respect and appreciation, thank you.

Also, allow me to thank you, Mr. GMAC for your reply. It's weird! How does MPPT designed to work with 1500 watts still work with 2060 Watts. I think that there are some influences such as the weather condition, the geographical location, and the electrical installations that were affecting one way or another on your system and blocking some of the ability of solar panles to reach the MPPT. The presence of "Isc: 11A" in the MPPT specification confuses me. How can I connect 4 solar panels as 2S2P?! The Amp will be more than 21A and This may be damaged the MPPT. Thanks Alot.

At the outset, I would like to thank you, Mr. Coulomb, for this beautiful reply, which took so much of your time. Sir, it seems that I did not explain the question well. In that MPPT There is two paramter: Operating Voltage Range:30~115Vdc Max. Solar Voltage(Voc):145VDC And i thought the Operating Voltage Range:30~115Vdc depends on Vmp And Max. Solar Voltage(Voc):145VDC depends on Voc If the Voc is used to calculate the compatible "Operating Voltage Range" this means that Voc can not be exceeded 115Vdc And here I must ask! What's the point of saying Max. Solar Voltage(Voc):145VDC While Voc can not exceed 115Vdc in "Operating Voltage Range" paramter?! Thanks Alot

Hello brothers. I have some unclear points regarding choosing solar panels compatible with MPPT charge controller,I have Axpert VM-3000 Plus and TrenaSolar panels 425W. Based on the technical specifications of this solar panels and MPPT charge controller: The first question : How many TrenaSolar 425W panels can be installed? is it two or three panles?! Second question: What does operating voltage Range depend on? does it depend on Vmp or Voc? The third question: What does "Isc:11A" mean? Is this the maximum ampere that the MPPT can handle?! Does this mean that two panels cannot be connected in parallel on this MPPT?! I have dealt with a some of Axpert inverter It's the first time I've seen "Isc" written in the MPPT specification. I don't understand why "Isc:11A" is written in the technical specifications Although the ability of the MPPT is 60Amp! The last question: What will happen if these numbers are exceeded? MAX. Solar voltage(Voc), Operating Voltage Range, Does the MPPT will be damaged? Thanks