SMA SB 1.5-1VL-40 - Manual (Page 10)

4 Product Description
4.1 Sunny Boy
The Sunny Boy is a transformerless PV inverter which converts the direct current of the PV array to
grid-compliant alternating current and feeds it into the utility grid.
B
A
C
D
Figure 2: Design of the Sunny Boy
Position Designation
A DC Load-Break Switch
The inverter is equipped with a DC load-break switch. If the DC load-break
switch is set to the position I, it establishes a conductive connection between
the PV array and the inverter. Setting the DC load-break switch to the O posi-
tion interrupts the DC electric circuit and completely disconnects the PV array
from the inverter. Disconnection takes place at all poles.
B LEDs
The LEDs indicate the operating state of the inverter.
4 Product Description SMA Solar Technology AG
Operating Manual SB15-25-BE-en-10 10