Connection Of The Pv Generator (Dc); Conditions For The Dc Connection - SMA SUNNY MINI CENTRAL 6000TL Installation Manual

Electrical Connection
5.4 Connection of the PV Generator (DC)
5.4.1 Conditions for the DC Connection
Use of Adaptors
Adaptors (branch connectors) are not to be visible or freely accessible in the immediate
surroundings of the inverter.
• The DC current flow may not be interrupted via adaptors.
• Observe the procedure for disconnecting the inverter as described in section
7.2 "Opening the Inverter" (page 52).
• Requirements for the PV modules of the connected strings:
– Same type
– Same number
– Identical alignment
– Identical tilt
• The connecting cables from the PV modules must be fitted with plug connectors. You will find
the necessary DC plug connector for DC connection in the delivery.
• The following limiting values at the DC input of the inverter may not be exceeded:
Inverter
SMC 6000TL
SMC 7000TL
SMC 8000TL
DANGER!
Risk of lethal electric shock or fire.
The maximum possible input current per string is limited by the plug connectors used. If the
plug connector is overloaded, an electric arc may occur and there is a fire risk.
• Ensure that the input current for each string does not exceed the maximum flow
current of the plug connectors used.
The residual current breaker
The inverter is equipped with an integrated universal current sensitive residual-current
monitoring unit. The inverter can automatically differ between real fault currents and
"normal" capacitive leakage currents.
If an external RCD or residual current breaker is strictly required, you must use a switch that
triggers at a failure current of 100 mA or higher.
30 SMC6-8TL-IEN101040
Maximum input voltage
700 V (DC)
700 V (DC)
700 V (DC)
SMA Solar Technology AG
Maximum input current
19.0 A (DC)
22.0 A (DC)
25.0 A (DC)
Installation Guide