Constant Q; Q(V) - Delta M42U Operation And Installation Manual

Commissioning

4.3.8.6 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)

4.3.8.7 Q(V)
Q(V) is a control mode that inverter will provide reactive power according to
grid voltage.
Constant cosphi
Cosphi (P)
Constant Q
► Q(V)
ENT
EXIT
Figure 4-29: Constant Q screens
ENT
EXIT
EXIT
EXIT
Figure 4-30: Q(V) screens
68
Mode
►
Fix Q
Mode
►
V1s
V2s
Qs limit
V1i
►
V2i
Qi limit
T delay
P lock-in
►
P lock-out
OFF
Ind 90%
OFF
479.7V
528.2V
Ind 44%
479.7V
403.5V
Cap 44%
10.00s
0%
0%