Inverter settings
Time setting | Explanation |
|---|---|
Synchronize inverter time | Synchronize the time of the inverter with the time of the smartphone. |
The following 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. Inappropriate settings can be hazardous and lead to injury or even death of the user or third parties. Material damage to the device and other equipment can also occur.
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 |
Power adaptation/ | Explanation | |
|---|---|---|
Active power control | Active power control | |
| P(U) regulation | Parameter of the P(U) curve, which reduces the active power if the output voltage exceeds a certain value |
P(F) regulation | Parameter of the P(f) curve, which decreases the active power during overfrequency or increases the active power during underfrequency | |
Power gradient (%/s) | Set the power gradient. The power gradient indicates how quickly the power is to be increased or decreased. | |
Maximum feed-in capacity (W) | Set the inverter's maximum active power | |
Maximum active power (%) | Setting for maximum output power of the inverter | |
Reactive power control | Reactive power control | |
| Settling time of reactive power | Specifies the reactive power settling time (3 Tao, PT-1 behaviour) |
Reactive power mode | Specifies the reactive power control mode. Configure settings according to the power supply company for reactive power control. | |
Energy management | Power limitation | |
| Power limitation function | Deactivated: No energy meter connected to the inverter. KSEM: A KOSTAL Smart Energy Meter is connected to the inverter. |
Sensor position | Installation position of energy meter (grid connection point or consumer) Connecting the KOSTAL Smart Energy Meter | |
Modbus address of energy meter | Energy meter Modbus address | |
Limitation of the active power to (W) | Set up power limitation | |
IP address of energy meter | Energy meter IP address | |
L1-3 grid power | Displays the grid power at the individual phases | |
Total energy | Shows the energy supply from the public grid | |
Total feed-in energy | Shows the feed-in into the public grid | |
L1-3 consumer power | Shows the consumer power at the individual phases | |
Total consumption | Shows the total consumption | |
L1-3 inverter output | Shows the inverter output at on the individual phases | |
Total inverter output | Shows the total energy generated by the inverter | |
Ripple control receiver | Ripple control receiver control | |
| Activate ripple control receiver | Activate/deactivate ripple control receiver function Connecting ripple control receiver |
RCR active power (%) | Set active power value for ripple control receiver | |
RCR reactive power | Set reactive power value or power factor cos phi for ripple control receiver | |
Other settings | Explanation | |
|---|---|---|
Isolated network detection | Activate/deactivate isolated network detection. Ensures that the inverter does not switch on or off in the event of supply voltage errors. | |
Residual current monitoring | Activate/deactivate residual current monitoring. When the function is enabled, the inverter detects the array fault current. | |
Compatibility of type A RCD | If this function has been activated, type A RCDs can be used as residual current protection equipment. In such cases, the inverter shuts down when the residual current becomes incompatible with a type A RCD. If the function is deactivated, a type B RCD must be used as residual current protection equipment if an RCD is stipulated. | |
Shadow management | If PV strings are in partial shading, the PV string affected no longer achieves its optimum performance. If shadow management is activated, the inverter adapts the MPP tracker in such a way that it can operate at maximum possible performance. | |
Shadow management interval time (s) | Set the interval of the MPP tracker sampling rate | |
Insulation resistance (kOhm) | If the value established for insulation resistance is less than the preset value, the inverter is not connected to the grid | |
Leakage current limit (mA) | Limit value for leakage current detection. If the value established is higher than the preset value, the inverter will shut down. | |
Limit for unbalanced voltage (%) | Set threshold value for supply voltage unbalance | |
Dynamic grid support (FRT) | Dynamic grid support (FRT = Fault Ride Through) | |
| Positive sequence K factor | Settings for uninterrupted cycling through grid faults FRT (Fault Ride Through) |
Negative sequence K factor | ||
Monitoring of supply voltage | ||
Undervoltage ride through (V) UVRT | ||
Overvoltage ride through (V) OVRT | ||
Grid support mode | ||
Limited grid support (%) | ||
Irregular voltage change (%) | ||
Overvoltage protection monitoring | Activate/deactivate monitoring of the internal overvoltage protection modules (SPD - Surge Protective Device). | |