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6 | Connecting the storage system
36 / 100 Installation instructions sonnenBatterie 10
6.4 Installing the power meter
Further information on power measurement and the power meter can be
found in the power meter instructions
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. These instructions explain, among
other things, the different measurement concepts and how to use multiple
power meters.
6.4.1 Connecting the power meter
The following points must be observed when connecting power meters:
N L1 L2 L3
A1 A2
Illustration 7: Power meter WM271 components
• Never confuse inputs A1 (input for generation)
and A2 (input for consumption)!
• The lines connected to the voltage measurement
terminal strip must be protected by suitable
miniature circuit breakers. Additional miniature
circuit breakers do not have to be installed if the
lines are already protected in accordance to the
relevant, currently applicable regulations and
standards.
1 A1 – input for production 8 CT for production – L2
2 A2 – input for consumption 9 CT for production – L3
3 Terminal strip for voltage measurement 10 Transformer interface for consumption
4 Power meter 11
CT for consumption – L1
5 Modbus terminal strip 12 CT for consumption – L2
6 Transformer interface for production 13 CT for consumption – L3
7 CT for production – L1
Illustration 8: Connection to the voltage ter-
minal strip at single-phase (1~) and three-
phase (3~) mains
• The connection to the voltage terminal strip de-
pends on the number of phases. In the case of a
single-phase (1~) mains, the voltage terminal strip
must be wired like it is shown on the bottom part
of the figure on the left. In case of a three-phase
(3~) mains wire as shown on the top part of the
figure.
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document number: 401, item number: 22118