9 Switching On and Off
SMA America, LLC
76
SI4548_6048-US-TB_en-13
Technical description
1. Switch the DC circuit breaker of the Sunny Island to "OFF".
2. Wait at least 15 minutes.
3. Switch the DC circuit breaker of the Sunny Island to "ON".
☑ The display light of the Sunny Island switches on.
4. Switch on the Sunny Island as described in section (see Section 9.1 "Switching On", page 73).
5. Monitor the generator startup and check that the Sunny Island switches to charge mode.
6. Check for error-free functioning of all other energy generators in the system.
Danger to life due to high voltages in the Sunny Island. Risk of death or serious injury due to electric
shock.
After an automatic disconnection, high residual voltages can remain in the Sunny Island capacitors.
• Wait at least 15 minutes before restarting the Sunny Island. The Sunny Island capacitors
discharge during this time.
Switching on the DC circuit-breaker
If, in rare cases, the device cannot be switched back on after 15 minutes, wait 30 minutes and
try again.
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.
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 113), disconnect all loads from the AC
output.
The loads can be reconnected once the Sunny Island enters the state of charge. A precondition
for this is that a generator capable of providing the required power is connected
(see Section 20.10 "What to Do during Emergency Charge Mode", page 222).
Summary of Contents for Sunny Island 4548-US
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