SMA STP 33-US-41 - Checking the PV System for Ground Faults

6 Troubleshooting
SMA Solar Technology AG
User Manual STP33-62-US-41-BA-en-11 61
Event number Message, cause and corrective measures
10911
Standard value for the running test point|xxx| |xx|
10912
Measured disconnection time for the running test point |xx| s
27103
Set parameter
The parameter changes are being adopted.
27104
Parameters set successfully
The parameter changes were successfully adopted.
27107
Update file OK
The update file found is valid.
27301
Update communication
The inverter is updating the communication component.
27302
Update main CPU
The inverter is updating the inverter component.
27312
Update completed
The inverter has successfully completed the update.
29001
Inst. code valid
The entered GridGuard code is valid. Protected parameters have now been
unlocked and you can adjust the parameters. The parameters will be automati-
cally locked again after 10 feed-in hours.
29004
Grid parameter unchanged
Changing the grid parameters is not possible.
6.3 Checking the PV System for Ground Faults
DANGER
Danger to life due to electric shock when touching live system components in
case of a ground fault
If a ground fault occurs, parts of the system may still be live. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Disconnect the product from voltage sources and make sure it cannot be reconnected
before working on the device.
• Only touch the cables of the PV modules on their insulation.
• Do not touch any parts of the substructure or frame of the PV array.
• Do not connect PV strings with ground faults to the inverter.
• Ensure that no voltage is present and wait five minutes before touching any parts of the PV
system or the product.