SMA SC 500CP-10-JP Installation Manual - Manual (Page 70)

14 Disconnecting the Sunny Central SMA Solar Technology AG
70 SCCP-JP-IA-A4-en-12 Installation Manual
Procedure:
1. Switch the key switch of the Sunny Central to Stop.
2. Wait 15 minutes. This allows the capacitors to discharge.
3. Disconnect the external AC voltage of the MV transformer.
4. Disconnect the DC voltage in the main distribution (e.g. Sunny Main Box) or the sub-distribution
(e.g. Sunny String-Monitor).
5. Disconnect the external voltage supply.
6. Open the door of the interface cabinet.
7. Switch off the AC circuit breaker.
8. Disconnect any additional external voltage.
9. Switch off the circuit breaker for supply voltage.
10. Switch off the circuit breaker of the grid monitoring.
11. Open the measurement and disconnect terminals.
12. Ensure that all poles are free of voltage.
13. Ground and short-circuit the inverter.
14. Cover or isolate any adjacent live components.
15. Unscrew the protective cover over the fuses.