SMA SC 500CP XT - Manual (Page 107)

By supplying reactive power, the inverter performs voltage-stabilizing measures in the event of overvoltage or
undervoltage. The parameterization is carried out by means of a reactive power/voltage characteristic curve. The
characteristic curve can be flexibly configured by parameterizing the slope, a type of deadband through two voltage
points and a hysteresis.
Figure 33: Characteristic curve for reducing reactive power without deadband and without hysteresis
Figure 34: Characteristic curve for reducing reactive power with deadband
10 Function Description SMA Solar Technology AG
User Manual 107 SCCPXT-BA-E4-en-54