SMA Solar Technology AG
Installation Guide
SB50US-80US-IUS094030
65
5.8.3 DC Connection With Additional DC Distribution
Using Spring Terminal Labeled Combined
1. Insert the insulated screwdriver into the provided slot of the spring terminal.
2. Push the screwdriver up, the spring terminal is opened.
3. Insert the stripped cable into the spring terminal.
4. Return the screwdriver to its original position.
5. Remove the screwdriver. The spring terminal is closed and the cable is fastened.
DC Connection With Additional DC-Distribution, Negative Grounding
3. Torque all wires in the terminal blocks inside the SMA DC-Disconnect to 15 in-lb (1.7 Nm).
1. Connect the positive DC wire (A) to the terminal
labeled COMBINED in the SMA DC-Disconnect.
2. Connect the negative DC wire (A) to the terminal
labeled PV GROUNDED in the SMA DC-Disconnect.
