SMA SC 500HE-US - Manual (Page 77)

SMA America, LLC 12 Parameters
Operating Manual SC500HEUS-eng-BE-BUS120320 77
12.2.2 Parameters for Reactive Power Regulation
Parameters Description Value/range Explanation Default
value
Q-VAr Reactive power in
kVAr − 220 kVAr …
220 kVAr
‒ 0 kVAr
Q-VArGra* Definition of the
change of the
reactive power
target value in the
event of a voltage
step 0% … 100% The value
corresponds to the
nominal power
"Pmax" 1%
Q-VArGraNom* Reactive power
gradient 0%/V … 10%/V ‒ 1%/V
Q-VArMod* Specification of the
procedure for
reactive power
regulation Off Reactive power
0 kVAr
Displacement
power factor
cos φ=1 Off
VArCtlCom Limits reactive
power via an
external control
unit, such as the
Power Reducer Box
PFCtlCom Specifies the
displacement
power factor cos φ
and the excitation
of the displacement
power factor via an
external control
unit, such as the
Power Reducer Box