SMA Solar Technology AG Electrical Connection
Installation Guide SB13_21TL-IA-IEN121060 27
5.2.3 Connecting Additional Grounding
If a second protective conductor, additional grounding or equipotential bonding is required, you can
additionally ground the inverter on the enclosure.
Overview of the Additional Grounding
Procedure
1. Attach the washer, terminal lug with protective
conductor and the conical spring washer to the
cylinder head screw. The teeth of the conical spring
washer must be facing the metal shackle.
2. Insert the cylinder head screw into the metal
shackle on the underside of the enclosure and
screw into the wall mounting bracket. Tighten the
cylinder head screw using a torque of 6 Nm.
3. Check that the contact between the protective
conductor and the enclosure is in accordance with
the regulations valid for the country of installation.
Object Description
A M6x12 cylinder head screw (included in the scope of delivery)
B Washer
C Terminal lug (M6) with protective conductor
D Conical spring washer (included in the scope of delivery)
E Metal shackle on the underside of the enclosure
F Wall mounting bracket of the inverter
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