Sungrow SG2K-S, User Manual

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7 LCD Operation User Manual
46
Tab. 7-5 “ Volt-watt ” Mode Parameter Explanations
Parameter Explanation
Default
Range
AU NZ
V1 Ref.
Grid voltage reference
value 1
207.0 V 207.0 V Not applicable
V2 Ref.
Grid voltage reference
value 2
220.0 V 220.0 V 216 V–230 V
V3 Ref.
Grid voltage reference
value 3
250.0 V 244.0 V 235 V–255 V
V4 Ref.
Grid voltage reference
value 4
265.0 V 255.0 V 244 V–265 V
The response curve is defined by the voltage reference values and
corresponding power levels.
Power
,
P
/P
rated
%
200
Inverter Voltage, V
V2
V3 V4
210 220 230 240 250 260 270
40%
60%
20%
80%
0%
V1
100%
Default characteristic
Range (lower limit)
Range (upper limit)
Fig. 7-2 Volt-watt Response Curve (“AU” for example)
Grid Protection Voltage Adjusting
All Sungrow’s inverters are compliant with the standard AS/NZS 4777 related to
grid protection requirements. In order to work with unstable utility grids,
inverters are equipped with automatic protection voltage adjusting function
(disabled by default). This mode can be enabled via the LCD.
OFF (default setting) : the function is disabled. The grid protection voltage
cannot automatically adjust.
ON: enables the protection function. The inverter will automatically adjust the
protection threshold to a higher value so as to be normally connected to the grid
in the event of grid over-voltage. The
V
max-rec
will be adjusted the same with the
V
max
, with an upper limit value not higher than V
max
.
If the setting is changed from ON to OFF , you should
set the protection voltage as specified in Tab. 7-3
according to local protection requirements.
OFF ON