SMA AUTOMATIC SWITCH BOX XL - Manual (Page 34)

Electrical Connection SMA Solar Technology AG
34 AS-BOX-XL-IEN094410 Installation Guide
5.4.5 Connecting the Battery
The electrical connection from the battery to the Automatic Switch Box is necessary in order to supply
voltage to a DC-operated contactor in the Automatic Switch Box.
Cable Sizing
The cable type and routing method must be suitable for the application and the deployment location.
Choose the cable cross-section according to the cable type used, the method of routing and the
ambient conditions at the installation site.
Dimension the cable to cope with a transient power of 800 W at low battery voltage.
Connection Procedure
1. Prepare the cables as described in Section 5.3 ”Preparing the cables” (page 24).
2. Connect PE to the "=AS-X10 Auxiliary Voltage (48V)" terminal according to the label.
3. Connect plus pole of cable to the "=AS-X10 Auxiliary Voltage (48V)" terminal according to the
label.
4. Connect minus pole of cable to the "=AS-X10 Auxiliary Voltage (48V)" terminal according to
the label.
☑ The battery is now connected.
ATTENTION!
Destruction of the cable due to thermal overload.
• Equip battery cable with an external backup fuse, e.g. the integrated BatFuse-B.03
fuses from SMA Solar Technology AG.