Delta RPI Series - Constant cosphi and Cosphi (P) Controls

Inverter can feed in a fixed reactive power to grid. Users can set the power
factor(cosphi) in Constant cosphi page.
Cosphi (P) is a function that inverter will feed in reactive power when its output
active power reach the setting values. For country Italy MV and Italy LV, users
can set lock-in voltage and lock-out voltage to assign the operation interval.
When grid voltage reach the lock-in voltage(V lock-in), inverter will enable
cosphi (P) function automatically and disabled it when grid voltage reach lock-out
voltage(V lock-out).
►
Constant cosphi
Cosphi (P)
Constant Q
Q(V)
Mode
cosphi
►
OFF
Ind 1.000
EXIT
ENT
Figure 5-23 : Constant cosphi page
Figure 5-24 : Cosphi (P) page
►
Constant cosphi
Cosphi (P)
Constant Q
Q(V)
Mode
Q upper
P lower
Q lower
►
OFF
Ind 1.000
45%
Ind 0.900
P upper
V lock-in
V lock-out
►
90%
241.5V
230.0V
EXIT
EXIT
ENT
Q upper
Q lower
P/Pn
1
cosφ
P lower P upper
Figure 5-25 : Cosphi (P) curve
5.2.8.4 Constant cosphi
5.2.8.5 Cosphi (P)
47
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