SMA SC 500CP-US - Manual (Page 89)

SMA America, LLC 14 Disconnecting the Inverter
Installation Manual SCCP-US-IA-US_en-41 89
15. Open the test and disconnect terminals.
16. Ensure that all poles are free of voltage.
17. Ground and short-circuit the inverter.
18. Cover or shield any adjacent live components.
19. Unscrew the protective cover over the DC fuses.
20. Remove all DC fuses from all DC fuse holders. Use a suitable tool or safety gloves.