Pid Recovery Function - Sungrow SH3.0RS User Manual

3 Function Description
For this reason, the battery discharge power may not reach the nominal power.
• If the PV voltage is higher than the upper limit value of MPP voltage (560 V),
the battery cannot discharge.
• The hybrid system will start to discharge the battery when the import power
value exceeds a threshold value of 70 W.
3.4

PID Recovery Function

The inverter is equipped with PID phenomenon recovery function to improve the PV power
generation. During the power generation process, the inverter could carry out a main Anti-
PID function without any influence to the grid side thanks to a particular technology.
• P-type panels
The PID recovery function only applies to P-type panels. When it is enabled, the inverter ris-
es the potential between the negative pole of PV arrays of P-type panels and the ground
through PID module, to recover the PID effect.
• The PID recovery function is inapplicable to N-type panel, please disable it;
• About 20W is consumed during PID recovery at night.
Keep the DC switch "ON" in the PID recovery process. During the process, there is
voltage hazard between inverter / PV module live conductors and ground. Do not
touch any of them.
20
figure 3-1 PID Recovery Scheme
User Manual