Sunny Island 4500
Installation & Operating Instructions
BWRI45-13-EE0304
- 45 -
SMA Regelsysteme GmbH
3.4.2 Connection of the battery
On the DC side a suitable storage battery has to be connected according to DIN VDE
0510 (VDE specification for electric storage batteries and battery plants).
Make sure that the cable to the storage battery has a sufficient cross-
section. Pay attention to the correct polarity of the connection to the
storage battery.
If the battery is to be grounded please follow the special instructions
in Chapter 3.4.1.
We urgently recommend a fused interrupter to disconnect the Sunny
Island. If there is no line protection (fuse) the installation of DC ca-
bles has to be inherently ground-fault-proof and short-circuit-proof.
The internal DC fuses of the Sunny Island are designed for interrupt-
ing currents of up to 20 kA (for
R
L
< 0,015 s ).
If your Sunny Island was ordered with terminal blocks instead of cir-
cuit breakers on the DC connection, the installation of a fused inter-
rupter is mandatory! See detailed information below.
The relevant regulations for installation have to be followed.