SMA Plug-in Grounding - Manual (Page 38)

Parameters and Error Messages SMA Solar Technology AG
38 Erdung_HF-IXX105020 Installation Guide
6.3.3 Correct Insulation Error
Proceed as follows to correct the error < Insulation resist. - check generator >:
1. Disconnect the inverter on the AC and DC sides as described in the inverter's installation guide.
2. If an SMA Plug-in Grounding has been connected, make a note of the generator's grounding
type (" − " or " + ") and remove the SMA Plug-in Grounding by pulling it downwards.
3. Check the PV generator for a ground fault as described in the inverter's installation guide, and
remove, if applicable.
4. Check the SMA Plug-in Grounding fuse and, if necessary, replace it as described in
section 5 ”Inspecting and Replacing the fuse of the SMA Plug-in Grounding” (page 30).
5. Connect the functioning SMA Plug-in Grounding to the inverter as described in
section 4 ”Installing the SMA Plug-in Grounding” (page 28).
6. Start up the inverter again as described in the inverter's installation guide.
☑ The inverter checks whether the ground fault still exists and whether the configured
grounding type corresponds to the grounding type of the installed SMA Plug-in Grounding.
– If the ground fault still exists, the error message < Insulation resist. - check generator >
remains on the display. In this case, repeat steps 3 to 6.
– If there is no longer a ground fault, the error message < Insulation resist. - check
generator > disappears and the inverter is feeding into the grid again.
– If a positive or negative grounding is mandated and the SMA Plug-in Grounding was
connected with an incorrect polarity, the error message < Wrong earthing type - check
earthing set > will be displayed. Proceed with section 6.3.4 ”Correct the Grounding
Type” (page 38).
☑ After having been re-started, the inverter will start feeding into the grid again.
6.3.4 Correct the Grounding Type
Proceed as follows to remove the error < Wrong earthing type - check earthing set >:
1. Disconnect the inverter on the AC and DC sides as described in the inverter's installation guide.
2. Connect a working SMA Plug-in Grounding with correct polarity to the inverter as described
in section 4 ”Installing the SMA Plug-in Grounding” (page 28).
3. Start up the inverter again as described in the inverter's installation guide. In this process, the
inverter will check whether the grounding type corresponds to the configured or learned
grounding type.
☑ The error has been corrected and the inverter is feeding into the grid again.