6. Normal operation
6. Normal operation
.55.
.54.
Figure 6.34 Power Rate Limit
Power Rate:016%
RateP_Sts-US:STOP
Over frequency load shedding Fstart range 60~62Hz, default setting 60.2Hz
Fstop can set the scope: 61-64Hz, the default setting 62Hz
.
Press the Enter key to select the mode or frequency
.
Press Up
/
Down to set. Press ESC to save the settings.
Figure 6.39 Freq
-
Watt
characteristic
f min
f nom
f start
f max
f stop
100
%
of
Available
Power
0
Grid
Frequency
6.7.8.3 Freq Derate Set
There are 5 derate modes in this menu. When operating under standard UL-1741 limits,
modes 00 to 03 are disabled. Mode 04 is used for UL1741SA frequency derating setting.
This sets the f start and f stop point.
The default setting is 00, means this function is disabled.
Figure 6.35 Freq Derate Set
Derate
Mode
:
04
OV
-
F
-
Start
:
60
.
20Hz
6.7.8.2 Power Rate Limit
This function is used for change Power Ramp-up rate. When inverter start up or input string
MPPT changes, inverter power ramp-up rate is limited in this menu.
The default setting is stop
(disable).
The setting range from 10% to 600%, means inverter power change rate per minute.
Values are not allowed to change. If they are set, they may not conform to the UL1741SA
standard
.
This setting is applicable when UL Standards are selected.
6.7.8.4 10mins Voltage Set
This function is disabled and
not used for the US.
This function is for maintenance personnel only, wrong operation
will prevent the inverter from reaching maximum power.
6.7.8.5 Power Priority
Figure 6.36 Power Priority
This setting is used to set the priority between Active Power Control (Watt) and
Reactive Power Control (Var).
YES=<ENT> NO=<ESC>
Select: Var First
Two options are available: Watt First and Var First.
This function is for maintenance personnel only, wrong operation
will prevent the inverter from reaching maximum power.
6.7.8.6 Initial Settings
In initial settings it will reset each work mode from 6.5.8.1 to 6.5.8.4 back to default.
Figure 6.37 Initial Settings
Work
Mode
Default
Power
Rate
Default
Set the voltage at the PCC point.
This setting is required by RULE 21 requirements.
PCC: Point of Common Coupling, the point where a Local EPS is connected to an Area EPS.
6.7.8.7 Voltage PCC Set
This function is for maintenance personnel only, wrong operation
will prevent the inverter from reaching maximum power.