SMA Solar Technology AG
Electrical Connection
Installation Guide
SB16_21TL-IA-IEN112351
29
5.4 Connecting the PV Array (DC)
5.4.1 Conditions for the DC Connection
• Requirements for the PV modules of the connected strings:
– Same type
– Same number
– Identical alignment
– Identical tilt
• The connection cables of the PV modules must be equipped with connectors. You will find the
necessary DC connectors for DC connection included in the delivery.
• If the inverter is not equipped with an Electronic Solar Switch and the regulations in the country
of installation require an external DC switch-disconnector, install an external DC
switch-disconnector.
• The following limit values at the DC input of the inverter must not be exceeded:
Use of Adaptors
Adaptors (branch plug connectors) must not be visible or freely accessible in the immediate
surroundings of the inverter.
• The DC circuit may
not
be interrupted by adaptors.
• Observe the procedure for disconnecting the inverter as described in section
7.2 "Opening the Inverter" (page 38).
Maximum input voltage
Maximum input current
600 V (DC)
11.0 A (DC)
DANGER!
Risk of lethal electric shock or fire.
The maximum possible input current per string is limited by the connectors used. If the
connector is overloaded, an electric arc may occur and there is a risk of fire.
• Ensure that the input current for each string does not exceed the maximum flow
current of the connectors used.
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