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Sunny Island 4500
SI-
13
BPRE
Generator
K1
start
14
SI-
13
BPRE
Generator
K2
contactor
14
SI-
13
BPRE-OE
Mains
K3
14
N
AC-
F2
outlet
L
-
13
SI-
SI-
K4
BP24
contactor
24V=
14
+
SI-
13
BPRE
Sync switch
K5
14
L
Generator /
Mains
N
sync. input
Sunny Island
Fig. 3.15: Example of an accelerated switch-over (generator and utility)
*
This relay shall not overcharge the 24 V auxiliary supply output (SMA order code "SI-BP24")! A relay
complying
with
the
"SI-BPRETR".
3.4.9 Connection of a Battery Room Fan and Electrolyte Pump
If lead storage battery arrays with liquid electrolytes are used as energy stores, the
control of an electrolyte circulation pump is to be connected via the relay terminal K7.
A battery room fan can be controlled via the relay terminal K8. Switch-on and switch-
off criteria can be defined via the menu of the Sunny Island. For wiring see Fig. 3.16.
The switched current of the relays K7 and K8 is a maximum of 5 A at
230 V AC. A detailed limit curve is shown in Chapter 13.
BWRI45-13-EE0304
*
L
N
external distribution
requirements
is
available
- 58 -
Installation & Operating Instructions
L
N
2 A
Grid
L
L
N
N
utility grid
with
the
generator
start
L
N
G
2 A
PE
generator
SMA
order
code
SMA Regelsysteme GmbH
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