Sunny Island 4500
Installation & Operating Instructions
BWRI45-13-EE0304
- 52 -
SMA Regelsysteme GmbH
In most switch-over situations the period of time for „short interruptions“ can be elimi-
nated by means of a slightly more complicated cabling (Fig. 3.11). Naturally, this time
cannot be reduced in case of a shutdown of the generator – unpredictable for the
Sunny Island - (manual deactivation, failure due to fuel deficiency, or similar).
Sunny Island
13
14
13
14
N
L
F2
G
L
N
external distribution
generator
Generator
start
Generator
contactor
K1
K2
generator
start
AC-
Outlet
2 A
L
N
PE
L
N
SI-
contactor
K4
24V=
SI-
BP24
SI-
BPRE
SI-
BPRE
13
14
+
-
*
Fig. 3.11:
Example of connection for an accelerated switch-over (generator)
* This relay shall not overcharge the 24 V auxiliary supply output (SMA order code ”SI-BP24“)! A relay
complying with the requirements is available with the SMA order code
”SI-BPRETR“.