SMA SC 500HE-20 Installation - Manual (Page 65)

SMA Solar Technology AG 13 Decommissioning
Installation Manual SCxxxHE-20-IA-IEN111210 65
13 Decommissioning
1. Set the key switch of the inverter to Stop.
2. Dismantle the panels.
3. Open the door of the connection cabinet.
4. Switch off the power supply.
• Switch off the miniature circuit-breaker of the external voltage supply.
• Switch off the miniature circuit-breaker of the grid monitoring.
• Open the test and disconnect terminals.
6. Ensure that no voltage is present.
7. Pull the communication cable out of the connection socket.
8. Unscrew and remove the Plexiglas cover from the fuses.
9. Remove the fuses or disconnecting blades out from fittings. Use an LV/HRC fuse handle to
do this.
10. Screw the Plexiglas cover back on over the fuses.
11. Decommission the DC main distribution (see DC main distribution documentation).
12. Decommission the DC sub-distribution (see DC sub-distribution documentation).
13. Disconnect the AC, DC and PE cabling in the inverter.
14. Mount the panels.
15. Close the doors of the connection cabinet.
5.
Only a duly authorized person trained in electrical safety is allowed to
disconnect the AC voltage of the medium-voltage transformer.
• Switch off the AC voltage of the medium-voltage transformer.