Sungrow SG30CX User Manual page 20

2 Product Description
The inverter can be connected to communication devices via either of the two interfa-
ces. After communication connection is established, users can view inverter information
or set inverter parameters through the iSolarCloud.
It is recommended to use the communication module from SUNGROW. Using
a device from other companies may lead to communication failure or other
unexpected damage.
P P r r o o t t e e c c t t i i o o n n F F u u n n c c t t i i o o n n
The protective functions are integrated in the inverter, including anti-island protection,
LVRT/ZVRT, DC reversed polarity protection, AC short circuit protection, leakage current
protection, DC overvoltage/overcurrent protection, etc.
P P I I D D r r e e c c o o v v e e r r y y
The PID effect (Potential Induced Degradation) of PV modules will cause serious dam-
age to generated output and yield, which can be avoided or recovered by PID recovery
function.
For positive voltage scheme, after the PID is enabled, the voltage to ground of all PV
•
strings is greater than 0, and therefore the PV string-to-ground voltage is a positive
value.
For negative voltage scheme, after the PID is enabled, the voltage to ground of all PV
•
strings is lower than 0, and therefore the PV string-to-ground voltage is a negative
value.
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User Manual