SMA SC 500HE-20 Installation - Manual (Page 42)

9 AC and DC Connection SMA Solar Technology AG
42 SCxxxHE-20-IA-IEN111210 Installation Manual
9.5 Connecting the PE cables
1. Lead the PE cables into the connection cabinet.
2. Strip the PE cable insulation.
3. Fit terminal lugs to the PE cables.
4. Connect the PE cables to PE connection rail according to circuit diagram and the instructions in
section 9.4.
9.6 Connecting the DC cables
9.6.1 Requirements
Cables from the PV modules
• Only use copper or aluminum cables.
• A maximum of 2 DC cables can be connected to each fuse input.
9.6.2 Connecting the SMB Connection Kit
To connect the Sunny Main Box to the inverter, you need the SMB Connection Kit. You can only
connect the SMB Connection Kit to an inverter with DC fuses. The busbar of the SMB Connection Kit
links 3 inverter DC terminals and enables the connection of up to 4 DC cables.
Equipotential Bonding
Ground the inverter according to the applicable regulations.
%"/(&3
Risk of lethal electric shock. Voltage is present in PV modules exposed to light.
Even after disconnection, high voltages will still be present at the DC input of the inverter if the DC
main distribution and DC sub-distribution have not been disconnected.
• If DC main distributions are installed, disconnect the fuses in the main distributions and ensure
that the device cannot be accidentally reconnected.
• If DC sub-distributions are installed, disconnect the fuses in the sub-distributions and ensure that
the device cannot be accidentally reconnected.
• Observe all safety precautions of the module manufacturer.