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SMA Solar Technology AG Electrical Connection

Installation Manual SB25_30-IA-IEN115050 29

5.4 PV Array Connection (DC)

5.4.1 Conditions for the DC Connection

• Requirements for the PV modules of the connected strings:

– Same type

– Same quantity

– Identical alignment

– Identical tilt

• The connecting cables 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 adaptors

Adaptors (Y plugs) must not be visible or freely accessible in the immediate surroundings

of the inverter.

• The electric DC circuit must not be interrupted by adaptors.

• Observe the procedure for disconnecting the inverter as described in Section 7.2

"Opening the Inverter" (page45).

Inverter Maximum input voltage Maximum input current

SB 2500

SB 2500-IT

600 V (DC) 12.0 A (DC)

SB 3000

SB 3000-IT

600 V (DC) 12.0 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

connectors are 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 through-

fault current of the connectors used.

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