Requirements for the PV modules per input

  • All PV modules should be of the same type.

  • All PV modules should be aligned and tilted identically. Otherwise the yields may be reduced.

  • If 2 strings are connected to one input, the same number of PV modules wired in series must be connected to each string.

  • On the coldest day based on statistical records, the open-circuit voltage of the PV array must never exceed the maximum input voltage of the inverter.

  • The maximum input current per string must be observed and must not exceed the through-fault current of the DC connectors in the installation.

  • The thresholds for the input voltage and the input current of the inverter must be adhered to.

  • If rapid shutdown modules are used, at least one string must consist of at least 6 PV modules. This achieves the required standby voltage of 3.6 V.

    Also see:

    Common Grid Configurations
    Cable Requirements