Sunny Island 4500
Installation & Operating Instructions
BWRI45-13-EE0304
- 91 -
SMA Regelsysteme GmbH
Lead storage batteries with a liquid electrolyte are also called non
VARLA while batteries labeled VARLA (
VA
lve
R
egulated
L
ead
A
cid) or
maintenance-free are normally gel or fleece batteries.
Initially, when started via “New Sys MASTER” or “New Battery”, the bat-
tery state will be set to L1 and will not change until a “normal charge”
could have been performed. In pure photovoltaically powered systems
this may take some days.
Furthermore, the displayed actual state of charge will not rise above 90%
for a certain time due to the adaption process of the Sunny Island’s bat-
tery management.
This behavior is normal and there is no reason to be concerned.
In a three-phase system one Sunny Island has to be set up as the master
(3Phs_Mstr1Set) while the other two are set up as slaves (3Phs_Slv1L2 and
3Phs_Slv1L3). The settings of other interconnection systems (for example “single-
phase parallel”) are corresponding.
You can only leave this menu by pressing
[ ESC ]
after you have checked all pa-
rameters (see Fig. 4.2). Please check now referring to Chapters 8 and 16 whether
additional settings for adaptation to the island grid are required or reasonable.
If this Sunny Island was the only one in the system or the last to be configured, you
may now switch on the AC fuses (F2) of all Sunny Islands in the system.
It is strongly recommended to leave all loads in the system switched off
until the battery state reaches N1 for the first time (the battery state
(BAZ) is displayed in various menus, see Chapter 9 for details).
Screw all lower lids onto the enclosures again after you have reconnected their PE
cables.
