SMA SI 3.0-11 - Manual (Page 40)

8 Disconnecting the Sunny Island from Voltage Sources SMA Solar Technology AG
40 SI30M-44M-60H-80H-BE-en-30 Operating Manual
8 Disconnecting the Sunny Island from Voltage Sources
1. Switch the system off (see Section 4.4, page 19).
2. Disconnect the circuit breakers and the load-break switches in the sub-distributions and secure against reconnection.
3. Open the load-break switch in the DC cable and secure against reconnection.
5. Loosen all screws of the enclosure lid and remove the enclosure lid.
6. Ensure that the DC connection is disconnected from voltage sources.
7. Ensure that the connections AC1 Loads/SunnyBoys, AC2
Gen/Grid, and ExtVtg (position A) are disconnected from
voltage sources.
8. Ensure that the connections Relay1 and Relay2 (position A) are
disconnected from voltage sources.
9. Ground and short-circuit the AC power cables outside the Sunny Island.
10. Cover or isolate any adjacent live components.
4. /05*$&
Destruction of the Sunny Island inverter due to electrostatic discharge (ESD)
By touching electronic components within the Sunny Island, you can damage or destroy the Sunny Island.
• Do not touch any electronic assemblies.
• Ground yourself before touching any connections.