SUNNY ISLAND 5048 - Technical Description - Wind & Sun Ltd.

SMA Solar Technology AG Switching On and Off
1. Switch the Sunny Island DC circuit breaker to the "OFF" position.
DANGER!
Danger to life due to high voltages in the Sunny Island.
After an automatic disconnection, high residual voltages can remain in the Sunny Island
capacitors.
• Wait at least 15 minutes to let the capacitors discharge and to allow the voltage
inside the device to drop to a safe level.
2. Switch the Sunny Island DC circuit breaker to the "ON" position.
☑ The display light of the Sunny Island switches on.
Switching on the DC circuit breaker
If, in rare cases, the device cannot be switched back on after 15 minutes, wait a little longer
and try it again.
3. Switch on the Sunny Island as described in section 9.1 ”Switching On” (page 62).
Charging the batteries
After reactivation, it is important that the batteries are charged. If an autostart generator is
present in the stand-alone grid, the Sunny Island will request the generator after a few
minutes.
4. Monitor the generator startup and check that the Sunny Island switches to charge mode.
5. Check for error-free functioning of all other energy generators in the system.
Battery Preservation Mode after Reactivation
If, after reactivation, the Sunny Island immediately switches into battery preservation mode
(see section 13.5 ”Battery Preservation Mode” (page 104)), disconnect all consumers
from the AC output (AC1 and AC2).
The consumers can be reconnected once the Sunny Island enters the charge state.
A precondition for this is that a generator capable of providing the required power is
connected.
For more information, see section 20.10 ”What to Do during Emergency Charge Mode”
(page 213).
Technical Description SI5048-TB-TEN110340 65