SMA SB 700U - Manual (Page 40)

4-16 SMA America SB700U-11:SE3207
Use the following procedure to connect the DC wires to the Sunny Boy:
1. Verify that the main breaker in the main utility breaker box is OFF.
2. Open the DC disconnect in the DC disconnect enclosure.
3. Install a ½-inch conduit fitting in the Sunny Boy’s DC wiring knockout. The DC
knockout is the one farthest to the left on the bottom of the Sunny Boy, as
shown in Figure 4-2 (page 4-5) and Figure 4-8 (page 4-16). Fasten the fitting
on the inside of the Sunny Boy with the nut supplied with the fitting.
4. Install ½-inch conduit between the DC disconnect enclosure and the Sunny
Boy’s DC wiring knockout.
Note: Refer to Figure 4-8 (page 4-16) for steps 5 through
7.
Figure 4-8 DC Connection Terminals
5. Pull the DC wires from the DC disconnect through the conduit into the interior of
the Sunny Boy.
6. Connect the positive DC wire to the terminal labeled DC+ in the Sunny Boy.
7. Connect the negative DC wire to the terminal labeled DC– in the Sunny Boy.
DC– PE PE L N
ENS1 ENS2 S15 S13 S11 S9 S7 S5 200V 150V
2 3 5 7
DC+
DC-–
2 3 5 7
DC+
A
S2
A B B
S1
ı ˇ
ˇ
A
S2
A B B
S1
Positive DC
wire connected
to DC+ terminal
Negative DC
wire connected
to DC– terminal