Sungrow SH3K6 - Regular Operational Voltage Range

User Manual 3 Function Description
17
The following figure shows the under-voltage derating curve.
V
min
P
n
230V
Normally
working area
Fig. 3-1 Grid Under-voltage Derating
Export Power Limit Derating
When the Energy Meter detects that the export power is greater than the limit
value on the LCD, the inverter will reduce the output power within the specified
range.
Power Factor Derating
When the power factor PF < 1.0, the inverter will reduce the output power within
a specified range. The following figure shows the power factor derating curve.
P
n
0.8P
n
0.8 1
Power factor
PF derating
Fig. 3-2 Power Factor Derating
3.2.2 Regular Operational Voltage Range
The inverters can operate within the allowable voltage range for at least the
specified observation time. The setting of the conditions depends on whether
the connection is due to a normal operational start-up or an automatic
reconnection after tripping of the interface protection.
When the voltage level is out of the operational levels, the inverter will
disconnect from the grid within the protection time. If a disturbance lasts less
than the required protection time, the inverter can reconnect to the grid once the