SMA SUNNY CENTRAL 900CP XT - Measures for Voltage Support through Parameterization of Reactive Power;Voltage Characteristic Curve: Varctlvolhystdba Mode

10 Function Description
SMA Solar Technology AG
User ManualSCCPXT-E7-BA-en-58106
Figure 38: Characteristic curve for reducing reactive power with deadband and hysteresis
The parameter Q-VArTmsSpnt determines the delay time which must elapse before the calculated reactive power
setpoint is actively used.
In order to prevent mutual interference of several systems with this function, the parameter Q-VArTmsVtg can be used
to set a delay time. This delay time defines how long a voltage change must be pending before a change in reactive
power feed-in is triggered. Consequently, control of the grid voltage at the grid feed-in point can be staggered across
several systems.
You can activate and deactivate the delay time by means of the parameter Q-EnaTmsVtg.
10.3.4.8 Measures for Voltage Support through Parameterization of Reactive Power/
Voltage Characteristic Curve: VArCtlVolHystDbA Mode
Consultation prior to parameter change
The parameters of this mode can only be selected or changed after consultation (see Section13 "Contact",
page153).