SMA SI 5048 - Switch off; Disconnect the device from voltage sources

Activation and Deactivation SMA Solar Technology AG
62 SI5048-TEN093630 Technical Description
9.3 Switch off
To switch off the Sunny Island, proceed as follows:
1. Stop the Sunny Island as described in section 9.2”Stopping the Sunny Island (Standby)”
(page61).
2. Switch the Sunny Island's DC circuit breaker to the "OFF" position.
☑ The Sunny Island is switched off.
9.4 Disconnect the device from voltage sources
1. Switch off the Sunny Island as described in section 9.3”Switch off” (page62).
2. Disconnect the Sunny Island from the battery.
3. Disconnect the Sunny Island from the voltage sources (AC1 and AC2). Separate AC1 and AC2
and disconnect from voltage sources.
☑ If PV inverters are connected to AC1, these switch off automatically as soon as the island
grid is missing.
4. Check thatthe Sunny Island has been disconnected from voltage sources.
5. Wait at least 15 minutes to let the capacitors discharge and to allow the voltage inside the
device to drop to a safe level.
☑ The Sunny Island is free of voltage.
"Disconnection sequence"
Only with the sequence shown here can you ensure that all internal counter positions/
values are saved.