5. Operation
5. Operation
3. Q Mode Settings
This Q Mode Settings include 5 working modes:
1. Disable 2. Volt-Var 3. Fixed-PF 4. Reac-Power 5.P-factor.
3.1 Disable
Description: This mode will disable the reactive power response working modes.
Q1
,
cap
Q2
=
Q3
=
0
Q4
,
ind
V1
V2
Vnom
V3
V4
Figure 5.44
Volt-Var curve for Q(V)
3.2 Volt-Var
Description: Inverter will change the reactive output power based on voltage change.
Default Settings for UL1741SA:
Q1: (0-60%) D30% Q4: (-60%-0%) Default -30%
Rated 240V Grid
V1:(192-240V) Default 210V V2: (192-240V) Default 236V
V3:(240-288V) Default 243V V4: (240-288V) Default 264V
Rated 208V Grid
V1:(166-208V) Default 182V V2: (166-208V) Default 205V
V3:(208-240V) Default 211V V4: (208-240V) Default 229V
Figure 5.45 Volt-Var
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Voltage1:
Voltage2:
Voltage3:
210.0V
236.0V
243.0V
Voltage4:
264.0V
S E T
=
< E N T >
D O N E
=
< E S C >
Volt-Var
Leading:
+030%
Leading:
-030%
3.3 Fixed-PF
Description: Inverter will output power with fixed power factor.
Setting Range: -0.8 to +0.8 Default value is PF = 1
Figure 5.46 Fixed-PF
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Power Factor:
+1.00
Fixed-PF
Y E S
=
< E N T >
N O
=
< E S C >
Figure 5.47 PF Range
0,6
0,6
1,0
-1,0
P/P
n
under-excited
Q/P
n
under-excited
over-excited
over-excited
I
II
IV
III
-0,2
3.4 Reac-Power (Not Required)
Description: Inverter will generate reactive power based on changing output power.
Note: This Setting is NOT required by UL1741SA Standards.
NOTE:
This function is for technicians only, improper operation will prevent the
inverter from reaching maximum power.
.46.
.47.
