174
Operation on LCD
• Reactive power control, reactive power standard curve cos
φ
= f(P)
For VDE ARN 4105, the curve cos
φ
= f(P) should refer to curve A. The set default
value is shown in curve A.
For TOR, the curve cos
φ
= f(P) should be curve B. The set default value is shown
in curve B.
For CEI 0-21, the default value of PFLockInPoint is 1.05. When Vac> 1.05Vn,
Pac> 0.2 Pn, curve cos
φ
= f(P) corresponds to curve C.
(0.9/0.95*)
(0.9/0.95*)
0.5
1.0
0.2
1
P/P
Emax
cos
leading
lagging
Over-excited
Under-excited
Figure 9-61 Figure 9-63 Curve A
*) If the grid-connected power of the inverter ≤4.6kW, the Power Factor is 0.95 at
1.0 power; if the grid-connected power of the inverter > 4.6kW, the Power Factor
is 0.90 at 1.0 power.
P/P
ma x
cos
(0.9/0.95*)
(0.9/0.95*)
1
0.2
0.5
1.0
leading
lagging
Capacitive
Inductive
Figure 9-62 Curve B
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