Electrical Connection SMA Solar Technology AG
42 SB20HF-30HF-IA-IEN120431 Installation Manual
6.4 Connecting the PV Array (DC)
6.4.1 Conditions for the DC Connection
• Requirements for the PV modules of the connected strings:
– Same type
–Same number
– Identical alignment
– Identical tilt
• The connection cable of the PV modules must be equipped with connectors. The DC connectors
for the DC connection are included in the delivery.
• The following limiting values at the DC input of the inverter must not be exceeded:
Use of Y adapters for parallel connection of strings
Y adapters may not be visible within close proximity of the inverter or freely accessible.
• The DC electric circuit must not be interrupted by adaptors.
• Observe the procedure for disconnecting the inverter as described in section
8"Disconnecting the Inverter from Voltage Sources" (page58).
Sunny Boy Maximum input voltage Maximum input current
SB 2000HF‑30 700 V 12 A
SB 2500HF‑30 700 V 15 A
SB 3000HF‑30 700 V 15 A
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