SMA SUNNY BOY 3.0 - Page 39

6 Electrical Connection
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-12 39
For connection to the inverter, all PV module connection cables must be fitted with the DC
connectors provided. Assemble the DC connectors as described in the following. The procedure is
identical for both connectors (+ and -). The graphics for the procedure are shown for only the
positive connector as an example. Pay attention to the correct polarity when assembling the DC
connectors. The DC connectors are marked with the symbols "+" and "-".
Figure 11: Negative (A) and positive (B) DC connectors
Cable requirements:
☐ Cable type: PV1-F, UL-ZKLA, USE2
☐ External diameter: 5mmto8mm
☐ Conductor cross-section: 2.5mm²to6mm²
☐ Qty single wires: minimum7
☐ Nominal voltage: minimum 1000V
☐ Using bootlace ferrules is not allowed.
Procedure:
1. Strip 12mm of the cable insulation.
2. Insert the stripped cable into the DC connector up to
the stop. When doing so, ensure that the stripped
cable and the DC connector are of the same
polarity.
+
3. Press the clamping bracket down until it audibly
snaps into place.
+