Maintenance and cleaning
SMA America, LLC
78
SB20_25_30HFUS-eng-IUS113711
Installation Guide
Replacing string fuses
1. Disconnect the Sunny Boy from voltage sources (see section 8.1 ”Disconnect the Sunny Boy
from Voltage Sources” (page 65)).
2. Open the SMA DC Disconnect (see section 8.2 ”Open SMA DC Disconnect” (page 66)).
3. Open fuse holder.
4. Take the fuse out of the fuse holder.
WARNING
The PV string fuses become hot during operation.
Burn injuries will result when touching the fuses.
• Wait for the fuses to cool down, after switching off the line circuit breaker and turning
the DC-Disconnect switch to position ”Off”.
Содержание sunny boy 2000hf-us
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