PV*SOL Expert 6.0 - Manual - Valentin Software

10.1.9 System Check
In order to check the interconnection of modules and inverters or MPP trackers and
batteries, and the influence of losses in the direct current cabling, click on the System
Check button before exiting the Technical Data dialog. Depending on the system
connections the system check takes place on one or a number of pages.
If new Settings for temperature and irradiation maximums have been entered under
Options/Settings, you will be reminded of this by a message at the base of the window.
No Discrepancies
You should only exit the ”Technical Data” dialog when, after the system check, the
following message appears:
On checking the system no discrepancies have been found!
Further Calculation Possible
If discrepancies appear, but a simulation of the system is still possible, the following
message appears:
Please check the system parameters! Further calculation possible.
Incorrect Database Data
The system check requires that module and inverter data is saved in the database. If
specifications are missing, or if the specifications are not physically possible, a message
appears:
The database files contain incorrect values!
Select Components
If you go to the system check before loading the module and inverter specifications, this
message appears:
Please select components from the database files available!
Check System Parameters
If during the system check errors are found that have to be corrected before simulation can
take place, the message is:
Simulation is not possible until you have checked and corrected the system parameters!
The following checks occur for grid connected systems:
Output checks
The inverter’s nominal output and maximum PV output are compared with the installed PV
output per inverter. The inverter’s capacity is defined from the PV output divided by the
inverter’s nominal output. A message appears if the capacity is less than 90% or more
than 110%. Capacities less than 20% and more than 300% are not accepted.
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