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– Insert the new surge arrester into the top-hat rail from above and
press it against the top-hat rail.
– Connect the cables to the same terminals of the surge arrester from which they were previously removed.
5. Close the interface cabinet.
7.8 Checking the Screw Connection of the Power Cabling
Damage to screw connections from over-tightening
• Only tighten loose connections applying the prescribed torque. Torque specifications are shown in the installation
manual of the inverter. Contact the SMA Service Line if specifications are missing.
Figure 8: Position of the power cabling
Position
Designation
A
For negative grounding: connection busbar of the DC − cables
For positive grounding: connection busbar of the DC+ cables
B
For negative grounding: connection busbar of the DC − cables
For negative grounding: connection lugs of the DC+ cables
C
Connection lugs of the AC cables
D
Connection busbar of the grounding cables
Maintenance Manual
7 Maintenance in Disconnected State
SCCP-US-WH-US_en-31
35
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