SMA SC 250U - Manual (Page 36)

6 Electrical connection SMA America, LLC
36 DISU_SCUS-IA-IUS111711 Installation Guide
6.3.2 Connecting DC cables to DC load break switch by screw
terminals
Figure 16: Connection of DC cables to busbar with screw terminals
%"/(&3
Voltage is present in PV modules exposed to light. Death resulting from electric shock.
• Cover the PV modules.
• Switch off the fuses in the DC distribution boxes (e.g. Sunny Central String-Monitor) and
secure them against reconnection.
• Follow all safety precautions of the module manufacturer.
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Normally grounded conductors may be ungrounded and energized when a ground-
fault is indicated. Risk of electric shock.
• Test before touching.
• Work on the Disconnect Unit must be carried out by qualified personnel.
E
D
C
A F
C
A
B
C
F
C
B B
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