SMA WB 3300-11 Installation - Manual (Page 48)

Opening and Closing SMA Solar Technology AG
48 WB33-38-IA-IEN120940 Installation Manual
7.2 Opening the Inverter
1. Stop the small wind turbine system and secure against restarting.
2. Disconnect the miniature circuit-breaker and secure against accidental or inadvertent
reconnection.
3. Use a current probe to make sure that no current is
present in the DC cables.
☑ If current is present, check the installation.
4. Release and disconnect all DC connectors. To do
this, insert a flat-blade screwdriver (blade width:
3.5 mm) into one of the side slots and pull the DC
plug connectors straight out. Take care
NOT TO PULL ON THE CABLE.
☑ All DC connectors are now disconnected from the inverter. The inverter is completely
disconnected from the small wind turbine system.
5. Ensure that no voltage is present at the DC connectors on the inverter.
☑ If voltage is present, check the installation.
6. Pull out the AC plug.