Sungrow SG8K-D - Grid Protection Voltage Adjusting

User Manual 7 LCD Operation
47
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
If the automatic protection voltage adjusting function is set to ON, the
volt-watt response and the 10-minute over-voltage protection function
will be automatically disabled.
If the line voltage or frequency goes outside pre-determined
parameters, the inverter must shut down for safety purposes, which
means it is not a faulty inverter in these instances. High line voltages
may damage home appliances and Sungrow is not held responsible or
liable for these issues.