Sunny Island 4500
Installation & Operating Instructions
BWRI45-13-EE0304
- 27 -
SMA Regelsysteme GmbH
The battery states do not correspond as directly to the actual state of
charge as
Fig. 2.6
suggests. Under certain circumstances the battery state
will remain stable even though the actual state of charge will vary widely.
It might even jump to a non contiguous state.
For example, in a new system the battery state will initially be set to L1
and will not change until a normal charge has been completed. After-
wards it will be set to N1 immediately.
Of course, in such cases all switching operations of the relays will be
executed as if the intermediate states were perambulated.
Battery states
Description
L4, L3, L2, L1
Reduced availability of the battery and increased battery aging
N4, N3, N2, N1
Normal working area with varying availability of the battery
O1, O2, O3
Overload
Table 2.1:
Classification of battery states