SMA WINDY BOY 3300 - Closing the Inverter

Opening and Closing SMA Solar Technology AG
50 WB33-38-IA-IEN120940 Installation Manual
7.3 Closing the Inverter
1. Attach the enclosure lid using the 4 screws and the
conical spring washers with the toothing facing
toward the enclosure lid. The screws must be
tightened with approximately 6 Nm torque to
ensure that the enclosure is sealed and the lid
properly earthed.
2. Check the DC connectors for correct polarity and plug them in.
To release the DC connectors see Section 7.2"Opening the Inverter" (page48).
☑ The DC connectors click audibly into position. To release the DC connectors,
see Section 7.2"Opening the Inverter" (page48).
3. Close all unused DC inputs as described in Section 5.5.4"Connecting the Small Wind Turbine
System (DC)" (page34) to ensure that the inverter is properly sealed.
4. Ensure that all DC connectors are securely in place.
DANGER!
Danger to life due to live enclosure lid
The earthing of the lid is effected by the conical spring washers.
• Attach the conical spring washers for all screws with the toothing facing toward the
enclosure lid.