SMA SB 3300 Installation - Manual (Page 34)

Electrical Connection SMA Solar Technology AG
34 SB33_38-IEN111851 Installation Guide
4. Check the strings for ground faults, as described in section 9.3.1 ”Checking the PV Generator
for a Ground Fault” (page 58).
5. Check the DC connector for correct polarity and connect it.
To release the DC plug connectors, see section 7.2 ”Opening the Inverter” (page 43).
6. To create the sealing on the inverter, all the DC
inputs have to be closed as follows:
– Insert the provided sealing plugs into the
unneeded DC plug connectors.
Do not insert the sealing plugs into the DC
inputs on the inverter.
– Insert the DC plug connectors with sealing plugs
into the corresponding DC inputs on the inverter.
NOTICE!
Excessive currents can damage the inverter!
• The maximum current per DC connector plug may not exceed 16 A.
DANGER!
Risk of lethal electric shock.
• Do not connect strings with ground faults.
• First, rectify the ground fault in the respective string.