SMA Solar Technology AG 6 Electrical Connection
Installation Manual SB30-50TL-21-IA-en-21 41
• The connection cables of the PV modules must be equipped with connectors. The DC plug
connectors for the DC connectors are included in the delivery.
• At the DC input of the inverter, the following limits must not be exceeded:
• On the statistically proven coldest day of the year the open-circuit voltage of the PV array must
never exceed the maximum input voltage of the ivnerter.
No mixed connections at input areas
For instance, if the positive pole of a string is connected at input area A and the negative pole
of the string at input area B, this comprises a mixed connection.
Only connect the strings at one input area and do not mix up the input areas A and B.
Otherwise, the inverter will not comply with the requirements of the EMC directive (directive on
the electromagnetic compatibility of devices), and will forfeit its operating licence.
Maximum input voltage Maximum input current
Input area A Input area B
750 V 15.0 A 15.0 A
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