Constant Q; Q(V) - Delta RPI Series Operation And Installation Manual

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5.2.8.6 Constant Q

Like Constant cosphi function, users can assign a percentage of reactive power
in Constant Q page.
Constant cosphi
Cosphi (P)
►
Constant Q

Q(V)

5.2.8.7 Q(V)
Q(V) is a control mode that inverter will provide reactive power according to grid
voltage. For country Italy MV and Italy LV, users can set lock-in power and lock-out
power to assign Q(V) function operation interval.
Constant cosphi
Cosphi (P)
Constant Q
► Q(V)
Q
s limit
Figure 5-26 : Constant Q parameters
Figure 5-27 : Q(V) page
Others
V
V
2s
V
1s
Q
i limit
V
1i
V
2i
Curve A
Figure 5-28 : Q(V) parameters
ENT Mode
►
Fix Q
EXIT
► Mode
ENT
V1s
V2s
Qs limit
EXIT
► V1i
V2i
EXIT
Qi limit
T delay
P lock-in
►
P lock-out
EXIT
Italy MV & Italy LV
Q
s limit
V
Q
1i
V
2i
Curve B
48
OFF
Ind 90%
OFF
248.4V
253.0V
Ind 44%
211.6V
207.0V
Cap 44%
10.00s
20%
5%
V
V
2s
V
Q
1s
i limit
Q