Pid Function - Sungrow SG125HV User Manual

User Manual

2.3.4 PID Function

SG125HV/SG125HV-20 provides Anti-PID function and PID Recovery function,
and achieves raising the potential between the negative electrode of PV array
and earth by using internal PID function module.
PV Strings
Anti-PID Function
When the inverter is running, the PID function module suppresses the PID effect
by raising the potential between the negative electrode of PV array and earth to
a positive value.
PID Recovery Function
When the inverter is not running, the PID function module imposes a reverse
potential to the PV modules so as to recover the PV modules in which PID effect
has occurred.
If the PID function is to be enabled
array of power station to which SG125HV/SG125HV-20 belongs
must be P-type. Otherwise, the PID function will be abnormal. If
other types of PV modules need to be selected, please contact
SUNGROW.
Raise the potential between the negative
electrode of PV array and earth
ensure all PV modules in the
, that
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