SMA Solar Technology AG
74
SB50US-80US-IUS094030
Installation Guide
Derating
The Sunny Boy is designed to operate at full rated power up to 45°C ambient. The inverter will
continue to operate beyond 45°C and will derate as required to maintain a safe internal component
temperature. Unnecessary derating can be caused by blocked fan intakes. For this reason the fan
intakes should be inspected often and cleaned when needed.
7.2 LED Fault Indicators
Ground Fault
The inverter has detected a ground fault in the PV system and has disconnected from the grid. The
ground fault must be located and fixed before the inverter will resume normal operation. Refer to
Section 8 "Troubleshooting" (page 86) for information on solving PV array ground faults. (The inverter
will not restart automatically)
All GFDI fuses are disabled in turbine mode.
Cleared GFDI Fuse
The GFDI fuse located in the fuse holder on the circuit board of the inverter has been cleared or is not
present. This fuse is used to protect the PV system in the event of an array ground fault. Troubleshoot
the PV array for ground faults prior to replacing this fuse.
CAUTION!
For continued protection against the risk of fire, replace the GFDI fuse with fuses of the
same type and rating only. The Sunny Boy is shipped with a Littelfuse KLKD 1 Amp, 600V
AC/DC type fuse.
Содержание SUNNY BOY 8000-US
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