SMA SC 500HE-US - Manual (Page 49)

SMA America, LLC 8 Reactive Power Regulation
Operating Manual SC500HEUS-eng-BE-BUS120320 49
Figure 18: Characteristic curve for reducing reactive power with deadband and hysteresis
The parameter "Q-VArTmsSpnt" determines the delay time after which the calculated reactive power
target value is actively used.
In order to prevent several systems with the function from influencing each other, the parameter
"Q-VArTmsVtg" can be used to set a delay time. This delay time indicates for how long a voltage
change must be pending before a change in the reactive power supply will result. This allows several
systems to alternately regulate the line voltage at the grid connection joint.
You can activate and deactivate the delay time using the parameter "Q-EnaTmsVtg".
Parameters used "Q-VolWidNom"
"Q-VolNomP1"
"Q-VolNomP2"
"Q-VArGraNom"
"Q-VArTmsSpnt"
"Q-VArTmsVtg"
"Q-EnaTmsVtg"