SMA SB 2500 Installation - Manual (Page 27)

SMA Solar Technology AG Electrical Connection
Installation Manual SB25-30-IA-en-51 27
5.2.3 Connecting Additional Earthing
If a second protective conductor, additional earthing or equipotential bonding is required, you can
additionally earth the inverter on the enclosure.
Overview of the additional earthing
Procedure
1. Align washer, terminal lug with protective
conductor and conical spring washer on the
cheese-head screw. The teeth of the conical spring
washer must be facing the metal bracket.
2. Insert the cheese-head screw into the metal bracket
on the underside of the enclosure and tighten it to
the wall mounting bracket. Tighten the cheese-head
screw to a torque of 6 Nm.
3. Make sure 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 cheese-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 bracket on the underside of the enclosure
F Wall mounting bracket of the inverter