Sonnen sonnenBatterie eco 9.43, Installation Instructions Manual, Page: 29 / 60

Electrical installation | 6
KD-446 | 22213 | EN | X03 29 / 60
K
L
K
L
Illustration 23: left: correct energy flow direc-
tion / right: incorrect energy flow direction
• The clamp-on current transformers are
clamped across the affected lines. The
energy flow direction of the clamp-on
current transformer must be observed.
The energy flow in the line must run from
K to L.
• In the case of a one-phase PV inverter or a single-phase mains, only the clamp-
on current transformer for the phase in question is connected. The other two
clamp-on current transformers must not be connected.
L1 L2 L3 N PE
3
1
2
1 2 3 1 2 3
1
2
3
L1 N PE
Illustration 24: Connecting the clamp-on current transformers for three-phase (left) and single-
phase (right) installation
• Do not confuse the phases! Power measurement only works if the current and
voltage of the same phase are measured.
Example: The clamp-on current transformer L1 (marked with number 1) must be
connected to phase L1. This phase L1 must also be connected to terminal L1 of the
voltage measurement terminal strip. Only then the correct power for phase L1
can be determined.
3
2
1 2 3
1
L1 L2 L3
3
1
2
1 2 3
L1 L2 L3
Illustration 25: Connecting the clamp-on current transformers: incorrect (right) and correct (left)