SMA SB 3300 Installation - Manual (Page 27)

SMA Solar Technology AG Electrical Connection
Installation Guide SB33_38-IEN111851 27
5.3.3 Connecting Additional Grounding
If a second protective conductor, additional grounding or equipotential bonding is required, you can
additionally ground the inverter on the enclosure.
Additional Grounding Overview
Procedure
1. Disconnect the inverter on the AC and DC sides as described in section 7.2 ”Opening the
Inverter” (page 43).
2. Align washer, terminal lug and safety washer on
cylinder bolt. The toothing of the safety washer must
face toward the metal shackle.
3. Insert the cylinder head screw into the metal
shackle and tighten it using a torque of 6 Nm.
4. Check that the contact between the grounding conductor and the enclosure is in accordance
with the regulations valid for the country of installation.
Object Description
A Metal shackle on the underside of the inverter enclosure
B Safety washer (within scope of delivery)
C Terminal lug (M6) with grounding conductor
D Washer
E M6x12 cylinder bolt (within scope of delivery)