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  1. Hello, My name is Ahmad Elghobashy from Egypt I do have a question and don't know what to do , and I think maybe you can help I have a string of 20 modules of Jinko solar panels JKM 310Wp now from the data sheet the open circuit voltage is 45.9 V So the total string open circuit voltage is 918 V now in the system check I get 1018 V So the max. allowed open circuit is exceded but I don't know why there is a 100 V over the stated in the data sheet

    • 2 replies
    • 3.6k views
  2. Started by a.elghobashy,

    I have a project where in one roof , I have two types of installation one array should be mounted while the other is roof parallel . And I did the first from mounted assembly , then when I add panels from module coverage I get an error messeage saying that I can't use both on the same mounting surface what is the solution for that problem ? Or how can I cobine both on one roof ?

    • 2 replies
    • 4.5k views
  3. Hello, My name is Ahmad Elghobashy from Egypt I do have a question and don't know what to do , and I think maybe you can help I have a string of 20 modules of Jinko solar panels JKM 310Wp now from the data sheet the open circuit voltage is 45.9 V So the total string open circuit voltage is 918 V now in the system check I get 1018 V So the max. allowed open circuit is exceded but I don't know why there is a 100 V over the stated in the data sheet Best regards, Ahmad Elghobashy Egypt

  4. Hi, I have the following problem: I don't know why I'm getting such big Regulation of radiation peaks losses (see attached file). Can someone explain what it's this factor for PVSol? maybe I understood it wrong and I'm not seeing what is really my problem. I would be very grateful for any help you are able to provide.

    • 2 replies
    • 3.5k views
  5. Dear fellow PVSol users, I want to understand how this sizing factor is calculated to argue why I'm choosing a given Inverter in a project. This project will be in Calama in the north of Chile and it shows me this (it's attached). This are quite different parameters from the default parameters and I don't get why. I would be very grateful for any help you are able to provide.

    • 1 reply
    • 5.1k views
  6. Started by szucsnorbi,

    Hi, I started to planed an open field power-plant. There is some shadowing effect because of the low distance between the rows. I wanted to compare two possible solution with direction of stings layout (3 separate horizontal sting and 3 string in vertical direction). I attached the vertical project’s file. I deployed a wall (it is the cause of shadow) and 3x23 mounted pv panels. I thought horizontal direction should have produced more energy then vertical because the shadow effect only one-third (1 string) of total area, not 3 string. But the result was unbelievable because vertical project yearly yield was a little bit higher. I don’t understand this situation,…

  7. Started by Mehmet Senol,

    Hi I am using PV-SOL Preminum R5. I have a problem related with "from-grid tariff" in Financial Analysis section. The from-grid tariff section allows entering a single energy price. However the electricity authority in my country offers different tariffs bands. For exmple the unit price of electricity is € 0.17 upto 250 kWh of consuption and increases to € 0.21 in the next 250 kWh. Should I take the average price and write it as an energy price or is there a way of specifying each band for more precise financial analysis? Thanks, Mehmet Senol

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