Connecting The Power Cable Of The Battery - SMA SUNNY BOY STORAGE 2.5 Operating Manual

6 Electrical Connection
• Remove the cable and go back to step 2.
5. Push the swivel nut up to the thread and tighten (torque: 2 Nm).
6.5.2

Connecting the power cable of the battery

Damage to the DC connectors due to the use of contact cleaner of other
cleaning agents
Some contact cleaners or other cleaning agents may contain substances that decompose the
plastic of the DC connectors.
• Do not use contact cleaners or other cleaning agents for cleaning the DC connectors.
Danger to life due to electric shock and electric arc when pulling off the DC
connectors when connecting a PV field to the battery inverter
If the DC connectors with the DC conductors of the PV field were accidentally connected to the
battery inverter, the high voltages of the PV field are present at the DC conductors. The removal
of the DC connectors results in death or serious injury due to electric shock and electric arc.
• Leave the DC connectors plugged on the battery inverter.
• Stop working on the inverter, and only once it is dark, unlock and then remove the DC
connectors and assemble again.
• If you would like to leave the system before troubleshooting, secure the danger zone
against unauthorized entry (e.g. with a fence).
Requirements:
☐ Only the supplied connectors for connecting the battery power cable may be used.
☐ The length of the battery power cable must not exceed 10 m.
Procedure:
1. Ensure that the DC connectors have the correct polarity.
If the DC connector is equipped with a DC cable of the wrong polarity, the DC connector must
be reassembled. The DC cable must always have the same polarity as the DC connector.
42 SBS25-1VL-10-BE-en-13
NOTICE
DANGER
SMA Solar Technology AG
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Operating manual