Sungrow SG250HX-US, Руководство пользователя

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When the anti-PID function is enabled, the inverter rises the potential of the negative pole of
PV array of P-type panels to close to the ground potential through PID module to suppress
PID effect.
When the PID repair function is enabled, the inverter rises the potential between the nega-
tive pole of PV array of P-type panels and the ground to 500Vdc through PID module, to re-
pair the PID effect.
• N-type panel
When the anti-PID function is enabled, the inverter decreases the potential of the positive
pole of PV array of N-type panels to close to the ground potential through PID module to
suppress PID effect.
When the PID repair function is enabled, the inverter decreases the potential between the
positive pole of PV array of N-type panels and the ground to –500Vdc through PID module,
to repair the PID effect.
• Make sure the inverter is applied to an IT system before enabling the anti-PID
function.
• PID repair and reactive power generation at night cannot be enabled at the
same time. In IT system, anti-PID and reactive power generation at night can
be performed simultaneously.
• When the PID repair function is enabled, it works only at night.
• After the PID recovery function is enabled, the voltage of the PV string to
ground is 500Vdc by default.
User Manual 2 Product Description