Inverter settings
The menu items can be used to set the parameters in the inverter which are specified by the grid operator. Parameters may only be changed on the inverter by qualified electricians who are familiar with the system and at the request of the grid operator
Grid settings | Explanation |
|---|---|
Frequency monitoring of level 1 activated | Activate/deactivate frequency monitoring level 1 |
PV string monitoring | If the function is activated, one value per PV string is displayed on the home page. In addition, an event is output if the polarity of the PV string is reversed. |
Grid guideline | Select grid guideline (e.g. VDE-AR-N 4105) |
Start up time (s) | Start-up waiting time after switching on the inverter |
Start up time following grid error (s) | Start-up time following inverter grid error |
Power gradient (%/min) | Power gradient after switching on the inverter |
Power gradient following grid error (%/min) | Power gradient after grid error of the inverter |
Overfrequency limit value x (Hz) | Set overfrequency limit threshold value |
Underfrequency limit value x (Hz) | Set underfrequency protection threshold value |
Overvoltage limit value x (V) | Set overvoltage protection limit value |
Undervoltage limit value x (V) | Set undervoltage protection limit value |
Overfrequency switch-off time x time (s) | Set overfrequency switch-off time |
Underfrequency switch-off time x time (s) | Set underfrequency shut-off time |
Overvoltage switch-off time x time (s) | Set overvoltage switch-off time |
Undervoltage switch-off time x time (s) | Set undervoltage switch-off time |
Max. grid start voltage (V) | If the supply voltage is higher than the upper limit of the reconnection voltage after the inverter has been shut down for protection due to a fault, the inverter may not be reconnected to the grid. |
Min. grid start voltage (V) | After the inverter is shut down for protection due to a fault, if the supply voltage is lower than the lower limit of the reconnection voltage, the inverter may not be reconnected to the grid. |
Max. grid start frequency (Hz) | After the inverter is shut down for protection due to a fault, if the grid frequency is higher than the upper limit of the reconnection frequency, the inverter may not be reconnected to the grid. |
Min. grid start frequency (Hz) | After the inverter is shut down for protection due to a fault, if the grid frequency is lower than the lower limit of the reconnection frequency, the inverter may not be reconnected to the grid. |
Moving average | Set 10 minutes of average overvoltage value |