SMA WINDY BOY 3300 - Closing the Inverter

SMA Solar Technology AG Opening and Closing
Installation Guide WB33_38-IEN101830 45
8. Loosen the screws of the enclosure lid.
9. Carefully remove the lid forward.
☑ The inverter is now open and is not live.
7.3 Closing the Inverter
1. Secure the lid with the 4screws and the lock
washers with the toothing facing toward the lid. The
screws must be tightened with approximately 6Nm
torque to ensure the sealing of the enclosure and
the grounding of the lid.
2. Check the PV connector for correct polarity and connect it.
To release the plug connectors see section 7.2”Opening the Inverter” (page44).
3. Close all unnecessary DC inputs as described in section 5.5.4”Connecting the Small Wind
Turbine System (DC)” (page32) to seal the inverter.
DANGER!
Danger to life due to high voltages in the inverter.
The capacitors in the inverter require 15 minutes to discharge.
• Wait 15 minutes before opening the inverter.
DANGER!
Danger to life due to live lid.
The grounding of the lid is ensured by the toothed lock washers.
• Fasten the lock washers for all 6 screws with the toothing facing toward the lid.