Electrical Connection
SMA Solar Technology AG
18
SB3300TLHC-IEN094121
Installation Guide
5.2.1 Connection of the AC Output
To connect the AC cable, proceed as follows:
1. Check the grid voltage. Complying with DIN VDE 0126-1-1, the Sunny Boy will not be fully
operational if the grid voltage is constantly higher than 253 V. In this case, contact the local
grid operator for assistance. The inverter can temporarily feed power into the grid with a
maximum output voltage of 260 V. However, the 10-minute average must not exceed 253 V.
2. Isolate the grid connection (switch the line circuit
breaker to its "Off" position), make sure it cannot be
switched back on, and test to make sure no voltage
is present.
3. Remove the screws that secure the enclosure of the
Sunny Boy and carefully remove the cover. Remove
the PE connection from the cover.
4. Connect the mains cable as shown in the figure.
Use the supplied cable opening.
"L" and "N" must not be swapped.
5. Connect the protective earth (PE) of the power line
to the upper screw terminal with the earth sign.
6. Reconnect the PE connection to the housing cover
with these.
7. Fix the housing cover of the Sunny Boy and tighten
the four screws evenly.
Connection requirements of the grid operator
Always observe the connection requirements of your grid operator!
Off!
