Connecting The Pv Generator (Dc) - SMA SUNNY BOY 1100 Installation Manual

SMA Solar Technology AG
5.5 Connecting the PV Generator (DC)
Use of Adaptors
Adaptors (branch connectors) are not to be visible or freely accessible in the immediate
surrounding of the Sunny Boy.
• The DC current flow may not be interrupted via adaptors.
• Always disconnect the current flow first via the Electronic Solar Switch.
• Requirements for the modules of the connected strings:
– same type
– same number
– identical alignment
– identical tilt
• The connecting wires of the PV modules must be equipped with plug connectors in order that
these DC plug connectors can be connected to the DC input sockets of the Sunny Boy.
A pre-assembled set for connecting the free cable ends of a string is available as optional
accessory from SMA Solar Technology (see section 12 "Accessories" (page 46)).
• The following limit values at the DC input of the Sunny Boy may not be exceeded:
Sunny Boy
SB 1100
SB 1200
SB 1700
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.
Installation Guide
Maximum input voltage
400 V (DC)
400 V (DC)
400 V (DC)
Electrical Connection
Maximum input current
10 A (DC)
12.6 A (DC)
12.6 A (DC)
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