them from the list.Menu Databases > Inverter > Edit
or: Page Inverters > (Configuration for Module Area) Selection > (Inverter) Selection > Edit
Parameters for the inverter are defined in this dialog.
Manufacturer and type may not exceed a length of 255 characters.
You can select one or more Available Certifications and transfer these to the list of Associated Certifications or remove
them from the list.
The 
Available checkbox defines if the product is deliverable at present.
The last update date states when the data record was last modified. This can be after editing in this dialog or a database update.
DC Power Rating [kW]
DC stands for direct current and refers to the input side of the inverter. The nominal output is the output specified for the inverter when in continuous operation.
In continuous operation, the inverter power output is top-limited by the DC power rating and the corresponding efficiency. For this reason, the efficiency of the inverter is reduced with higher input power.
AC Power Rating [kW]
AC stands for alternating current and refers to the output side of the inverter. The AC nominal output is the output specified for the inverter when in continuous operation. In continuous operation, the inverter output power is top-limited by the AC power rating.
Stand-by Consumption [W]
If the inverter does not supply energy to the grid or appliances, the inverter's own power consumption must be taken into consideration. In addition to stand-by consumption, there is also night consumption.
Night Consumption [W]
The inverter turns itself off at night, but still requires a minimum level of energy.
Max. Input Voltage [V]/Max. Input Current [A]
This voltage or current threshold may not be exceeded. If it is, the inverter will be destroyed. In the program, this value is not required to calculate the simulation but only to check the system.
Nominal DC Voltage [V]/Nominal DC Current [A]
The inverter input voltage or current, when the inverter supplies the nominal output.
Grid Connection
1-phase, 3-phase, ...
Max. DC Power [kW] / Max. AC Power [kW]
Inverter and PV power must be aligned with one another. If the DC power is greater than the power rating of the inverter, the inverter may shut down. The maximum PV power is the maximum DC output the inverter can convert. In the program, this value is not required to calculate the simulation but only to check the system.
Feed-in from [W]
There is a minimum output which has to be supplied by the input side (PV generator) before the inverter can operate.
Max. Input Current [A]
see Max. Input Voltage
Number of DC Inlets
...
With Transformer / Without Transformer
...
Change in Efficiency if Input Voltage differs from Nominal Voltage
The inverter efficiency characteristic curve is given for the nominal voltage. If an inverter is not operated at the nominal voltage, the inverter efficiency changes. The efficiency of an inverter decreases with the deviation of the input voltage. The efficiency changes by the specified value per 100 V.
MPP Matching Efficiency
each for output range <20% or >20% of power rating
Parallel Operation
The MPP trackers cannot be interconnected ...
Number of MPP Trackers
The number of independent MPP controllers. With multi-string units, this value is greater than 1.
Max. Input Current per MPP Tracker [A]
This current threshold per MPP tracker may not be exceeded. (only active when number of MPP trackers >1)
Max. Recommended Input Power per MPP Tracker [kW]
See Max. Recommended PV Output [kW]
Upper and Lower Voltage Thresholds for MPP Range [V]
The inverter can control the MPP tracking within this voltage range. This means that the inverter searches for the optimum voltage for the PV array within this voltage range, so that the array produces the maximum power output.
Efficiency Characteristic Curve
The conversion efficiency is the ratio between the output power and the input power, and is dependent on the current output of the inverter.
On data sheets, the figure for the efficiency is related to the nominal output, although, for most of the year, this is not supplied by the PV system. The part-load operation is therefore very important for the simulation results.
To determine the characteristic curve, the program requires 7 checkpoints, i.e. the efficiency at 0, 5, 10, 20, 30, 50, and 100% of the nominal output.