Connecting Additional Grounding - SMA Sunny Tripower X 12 Operating Manual

6 Electrical Connection
12. For connection without a neutral conductor, use the
jumper provided to bridge terminal blocks PE and
N. For this, press the locking levers of terminals PE
and N upward, guide the jumper into the terminals,
and press the locking levers downward again.
13. Press the locking levers of terminals L1, L2, L3, and
if applicable N upward, guide conductors L1, L2,
L3, and if applicable N into the terminals according
to the labeling, and press the locking levers
downward again.
14. Ensure that the correct conductors are assigned to all the terminals.
15. Ensure that all conductors are securely in place.
Also see:
• AC cable requirements ⇒ page 38
6.5

Connecting Additional Grounding

If additional grounding or equipotential bonding is required locally, you can connect additional
grounding to the product. This prevents touch current if the grounding conductor at the terminal for
the AC cable fails.
Additionally required material (not included in the scope of delivery):
☐ 1 grounding cable
☐ 1 ring terminal lug M5
Cable requirements:
☐ The cable cross-section must correspond at least to the cross-section of the grounding
conductor connected to the terminal block for the AC connection.
Procedure:
1. Dismantle the grounding cable.
44 STPxx-50-BE-en-11
SMA Solar Technology AG
L 1 L
2 L 3
N P
E
L 1 L
2 L 3
P E
Operating manual
L 1 L
2 L 3
N P
E