
26 Installation and Operating Instructions V01
5.5.4 Connecting the PV Array
1. Ensure that the individual AC circuit breaker is switched off and secure it against
reconnection.
2. Ensure that the DC-switch is switched off and secure it against reconnection.
3. Ensure that there is no ground fault in the PV strings.
4. Check whether the DC connector has the correct polarity.
If the DC connector fits with a DC cable having the wrong polarity, the DC connector
must be reassembled again. The DC cable must always have the same polarity as
the DC connector.
5. Ensure that the open-circuit voltage of the PV strings does not exceed the
maximum DC input voltage of the inverter.
6. Connect the assembled DC connectors to the inverter until they audibly snap into
place.
Damage to the inverter due to overvoltage
If the voltage of the strings exceeds the maximum DC input voltage of the inverter, it can be
destroyed due to overvoltage. All warranty claims become void.
• Do not connect strings with an open-circuit voltage greater than the maximum DC input
voltage of the inverter.
• Check the design of the PV system