Delta M42U

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.
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 1.00
EXIT
ENT
Figure 4-26: Constant cosphi screens
Figure 4-27: Cosphi (P) screens
►
Constant cosphi
Cosphi (P)
Constant Q
Q(V)
Mode
Q upper
P lower
Q lower
►
OFF
Ind 1.00
45%
Ind 0.90
P upper
V lock-in
V lock-out
►
90%
0V
0V
EXIT
EXIT
ENT
Q upper
Q lower
P/Pn
1
cosφ
P lower P upper
Figure 4-28: Cosphi (P) curve
4.3.8.4 Constant cosphi
4.3.8.5 Cosphi (P)
Commissioning
67