4 | Function
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Operating instructions sonnenProtect 1300
4 Function
4.1 Basic principle
The plug outlet of the sonnenProtect supplies electrical power both in grid and emer-
gency operation. The storage system with sonnenProtect automatically toggles
between grid operation to emergency operation. The switchover time between grid
and emergency operation is stated in the section Technical data [P. 8].
4.2 Grid operation - no grid outage
If the public electricity grid is not experiencing an outage, the consumer connected to
the sonnenProtect will be continuously supplied with electrical power. This electrical
power is drawn directly from the grid and the batteries of the storage system are not
discharged by the usage of the sonnenProtect. The storage system controls the flows
of energy in the building and reserves the set backup buffer.
5
20
40
60
80
100
ON AL
Test
Reset
R
AL
k
Ω
Illustration 3: Insulation monitor in grid operation
The insulation monitor is deactivated in grid
operation: ‘ON’ LED is off.
4.3 Emergency operation - grid outage
The storage system automatically detects grid outages and disconnects from the pub-
lic electricity grid. The plug outlet of the sonnenProtect is not supplied with electrical
power for the approx. five seconds it takes to switch over to emergency operation.
After this point, the consumer connected to the plug outlet is supplied with electrical
power until the backup buffer of the storage system batteries is depleted.
Once the backup buffer is used up and the battery’s minimum state of charge has
been reached, the plug outlet of the sonnenProtect is no longer supplied with elec-
trical power.
