Troubleshooting For Fault Messages Displayed On App - Epcom EPIG7K Manual

9 Troubleshooting for Fault Messages Displayed on
APP
Fault Messages
Grid overvoltage
/ undervoltage
Grid
over-frequency /
under-frequency
No grid
PV reversely
connected
PV overvoltage
Insulation
impedance fault
Leakage current
abnormality
Description
Voltage on AC side
exceeds the allowable
range
Frequency on AC side
exceeds the allowable
range
Fail to detect the
voltage on AC side
Positive and negative
polarity of DC input PV
1 or PV 2 are reversely
connected
DC input voltage is
excessive
Ground impedance of
PV modules is less
than the allowable
value
Leakage current
exceeds the allowable
value
Corrective Action
Check if the grid voltage is within the
allowable range. Contact the local
operation and maintenance personnel
for any help.
Check if the grid frequency is within the
allowable range. Contact the local
operation and maintenance personnel
for any help.
Check the connection of AC circuit
breaker, AC fuse and AC terminals.
Contact the local operation and
maintenance personnel for any help.
Contact the local operation and
maintenance personnel for any help.
Contact the local operation and
maintenance personnel for any help.
Check the connection of PV arrays and
earth wire, then restart the inverter.
Contact the local operation and
maintenance personnel for any help.
Check the connection of PV arrays and
earth wire, then restart the inverter.
Contact the
maintenance personnel for any help.
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local operation and