Installation Guide
Page
9
of
26
4
Operation
4.1
Function
The sonnenProtect-Plus is simple and universal in its design. The product comes completely
pre-wired and requires the installer to connect the grid supply, normal loads, essential loads
and optionally an AC-coupled PV system. Another benefit is also the sonnen Power Meter
that is already an integral part of the sonnenProtect-Plus. sonnenBatterie Hybrid 9.53 with
sonnenProtect-Plus automatically switches from grid to backup operation and vice versa.
The two operating modes are described in the following.
4.1.1
Grid operation (grid available)
In normal grid operation, the normal loads (1-2) and the essential loads which are
connected to the emergency circuit (3) are supplied with power. In this scenario, the grid
(9), sonnenBatterie Hybrid9.53 (5) and the optional AC-coupled PV system (8) all supply
power to the loads. The storage system controls
–
as described in the product
documentation of the storage system - the energy flow of the installation.
Figure 3: Grid operation- no grid outage
4.1.2
Emergency operation (grid not available)
The sonnenProtect-Plus (4) automatically detects a grid outage and therefore the
connection to the grid (9) is disconnected. Both normal and essential loads (1-3) in the
building as well as any AC-coupled PV system (8) will disconnect due to the grid outage.
Emergency power is generated after max. 15 seconds. The essential loads connected to the
emergency circuit (3) in the building are thereby supplied with electrical power. However,
the normal loads (1-2) will not be supplied with electrical power. The switchover from grid
to emergency operation is signalled by the Eclipse on the storage system. The colour of the
Eclipse changes from white (normal operation) to green (emergency operation).