SMA America, LLC
Decommissioning
Installation Guide
SB20_25_30HFUS-eng-IUS113711
97
Removing cables of the PV strings from the DC side of the DC-Disconnect (with
optional string fuses)
1. Remove cables of the PV string from the terminals
(A).
2. Remove the cables of the PV string connected to the
screw clamps (B):
– Loosen the screws of the screw clamps (B)
counterclockwise.
– Pull the cables from the screw clamps (B).
3. Remove the cables of the PV string connected to the
screw clamps (C):
– Loosen the screws of the screw clamps (C)
counterclockwise.
– Pull the cables from the screw clamps (C).
4. Pull the cables of the PV string, the grounding cable
of the PV plant and the grounding cable of the
ground rod through the opening of the
SMA DC‑Disconnect enclosure.
☑ The cables of the PV plant are removed from the DC side of the SMA DC-Disconnect.
WARNING
Danger of short circuit.
Voltage may be present at the DC cables of the PV plant.
• Do not short circuit the cables.
• Insulate the DC+ and DC‒ cable in such way, that they do not have contact.
• Pull out the cables out of the enclosure only after they have been separately
insulated.
Using DC-Terminal blocks
Disconnect the wires to the AC-terminal block as described in section 12.7.3 ”Disconnect
wires from AC-terminal block” (page 102).
