6 Electrical Connection
SMA Solar Technology AG
Operating manualSTPxx-US-50-BE-en-1152
7. If the DC connector is equipped with a DC cable of the wrong polarity, the DC connector must
be reassembled. When this is done, the DC cable must always have the same polarity as the
DC connector.
8. Ensure that the open-circuit voltage of the PV array does not exceed the maximum input
voltage.
9. Connect the assembled DC connectors to the
inverter.
☑ The DC connectors snap into place.
10. Ensure that all DC connectors are securely in place.
11.
NOTICE
Damage to the product due to sand, dust and moisture ingress if the DC
inputs are not closed
The product is only properly sealed when all unused DC inputs are closed with sealing
plugs. Sand, dust and moisture penetration can damage the product and impair its
functionality.
12. Seal the DC connectors that are not required on the
product with the supplied sealing plugs.
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