SMA SC 500HE-20 Installation - Manual (Page 43)

SMA Solar Technology AG 9 AC and DC Connection
Installation Manual SCxxxHE-20-IA-IEN111210 43
1. Position and screw the busbar firmly over
3 DC terminals.
2. Pull the fuses out of the 3 DC terminal lugs. To do this, use a LV/HRC fuse handle.
9.6.3 Connecting the DC Cables
1. Lead the DC cable into the connection cabinet.
2. Strip the DC cable insulation.
3. Fit terminal lugs to the DC cables.
4. Connect the DC cables to the DC terminal lugs or DC busbar according to the circuit diagram
and the instructions in section 9.4.
%"/(&3
Risk of lethal electric shock. Voltage is present in PV modules exposed to light.
• 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.
Disconnection on the DC Side
The DC main and sub-distribution boxes should be equipped with circuit breakers. Circuit
breakers enable trouble-free DC side disconnection of the inverter.