SMA Solar Technology AG
Electrical Connection
Installation Guide
SB3300TLHC-IEN094121
21
3. Check the strings for ground faults, as described in
section 9.1.1 ”Checking the PV Generator for
Ground Fault” (page 32).
4. Connect up the faultless PV generator strings to the
inverter.
5. Close the unused DC input sockets with the caps
included in the delivery.
6. Reinsert the Electronic Solar Switch in the socket on
the underside of the Sunny Boy.
NOTICE!
Exceeding the maximum input voltage can destroy the Sunny Boy!
If the voltage of the PV modules exceeds the maximum input voltage of the Sunny Boy, it
can be destroyed by the overvoltage. All warranty claims become void.
• Do not connect strings to the Sunny Boy with open circuit voltage greater than the
maximum input voltage of the Sunny Boy.
• Check the system design.
DANGER!
Risk of lethal electric shock!
• Do not connect any strings in which you have detected a ground fault!
• Firstly, clear the ground fault in the PV generator.
