Sungrow SG10RT, Руководство пользователя

Страница: 110 / 126

100
Fault code Fault name Corrective measures
364-395
Boost Capacitor Over-
voltage Fault
Disconnect the AC and DC switches, and re-
connect the AC and DC switches 15 minutes
later to restart the inverter. If the fault still ex-
ists, contact Sungrow Customer Service.
1548-1579
String Current Reflux
1. Check whether the number of PV modules
of the corresponding string is less than other
strings. If so, disconnect the DC switch and
adjust the PV module configuration when the
string current drops below 0.5 A.
2. Check whether the PV module is shaded;
3. Disconnect the DC switch to check whether
the open circuit voltage is normal when the
string current drops below 0.5 A. If so, check
the wiring and configuration of the PV module,
4. Check whether the orientation of the PV
module is abnormal.
9.2 Maintenance
9.2.1 Maintenance Notices
The DC switch can be secured with a lock in the OFF position or a certain angle beyond the
OFF position.
Risk of inverter damage or personal injury due to incorrect service!
• Always keep in mind that the inverter is powered by dual sources: PV strings
and utility grid.
Before any service work, observe the following procedure.
• Disconnect the AC circuit breaker and then set the DC switch of the inverter to
OFF;
• The DC switch can be secured with a lock in the OFF position or a certain angle
beyond the OFF position.
• Wait at least 10 minutes for inner capacitors to discharge completely;
• Verify that there is no voltage or current before pulling any connector.
9 Troubleshooting and Maintenance User Manual