Connecting The Pv Array (Dc); Conditions For Dc Connection - SMA SUNNY MINI CENTRAL 4600A Installation Manual

SMA Solar Technology AG
5.4 Connecting the PV Array (DC)
5.4.1 Conditions for DC Connection
Using Y adaptors for the parallel connection of strings
Y adaptors must not be visible or freely accessible in close proximity to the inverter.
• The DC circuit must not be interrupted by Y adaptors.
• Observe the procedure for disconnecting the inverter as described in Section 7.2
"Opening the Inverter" (page 48).
• Requirements for the PV modules of the connected strings:
– same type
– same quantity
– identical alignment
– identical tilt
• The connection cables of the PV modules must be equipped with connectors. The connectors
required for DC connection are included in the scope of delivery.
• The following thresholds at the DC input of the inverter must not be exceeded:
Maximum input voltage
600 V (DC)
WARNING!
Danger to life due to electric shock or fire
The maximum possible input current per string is limited by the connectors used. If the
connectors are overloaded, an electric arc may occur and there is a risk of fire.
• Ensure that the input current per string does not exceed the maximum through-fault
current of the connectors used.
Installation Manual
Maximum input current
26.0 A (DC)
SMC46-60A11-IA-en-81
Electrical Connection
27