Function | 4
KD-346 | 22042 | EN | X01
13 / 20
1
2
3
4
Illustration 4: Distribution of overall capacity
1 - Total capacity
2 - Available electrical power in grid opera-
tion
3 - Backup buffer
4 - Minimum state of charge
5
20
40
60
80
100
ON AL
Test
Reset
R
AL
k
Ω
Illustration 5: Insulation monitor in emergency
operation
The insulation monitor is activated in emer-
gency operation: ‘ON’ LED lights up. The
storage system switches back to grid opera-
tion with a delay after a grid outage. This can
take a few minutes. During this time the
plug outlet is supplied with power in emer-
gency operation.
4.4 Protection provided by the insulation monitor
The insulation monitor checks the insulation status of the IT network, which the
sonnenProtect forms in emergency operation. If an insulation fault occurs, the insula-
tion monitor terminates the connection to the plug outlet of the sonnenProtect.
5
20
40
60
80
100
ON AL
Test
Reset
R
AL
k
Ω
Illustration 6: Insulation monitor in the event of
an insulation fault
The ‘AL’ LED lights up. When the insulation
fault no longer exists, the connection to the
plug outlet is automatically re-established.
The ‘AL’ LED goes out.
