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5.ELECTRICAL CONNECTION
5.1 Electrical connection process
Electrical connection process of SF series as shown in
Figure 5-1
。
Figure 5-1 Electrical connection flowchart
5.2 Connecting PGND Cables
（
PE
）
Good grounding for the SF series can help resist the impact of the surge voltage and improve the EMI performance. First
connect the PGND cable before connecting the AC power cable, DC power cable, and communication cable.
For the system with one SF series, connect the PGND cable to the ground. For the system with multiple SF series ,connect the
PGND cables of all SF series to a ground bar.
If the installation location is near the ground ,first connect the PGND cable to the ground before installing the SF series on the
wall.
Step 1
Remove the insulation layer with an appropriate length using a wire stripper. Insert the exposed core wires into the OT
terminal and crimp them by using a crimping tool, as shown in
Figure 5-2.
Figure 5-2 Preparing a ground cable
Step 2
Install the crimped OT terminal, flat washer, and spring washer on the M6 welded stud, and tighten the nut to a torque of5
N.m using a socket wrench.
Toenhancetheanti-corrosionperformanceofthegroundterminals,applysilicagel on the mafter connecting the ground cable
.
5.3 Connecting AC Output Power Cables
Figure 5-3
AC connector diagram
1. Adapter 2.
.Sleeve 3. Cable Gland 4. AC output connector
Step 1
Remove the cable gland and the adapter from the AC output connector.
Step 2
Remove the insulation layer of the AC output cable of an appropriate length using a wire stripper.
1.
Strip the outer jacket of AC output cable by 55mm.
2.
CutthecorewiresofthecablesexcludingthePGNDcableby2.5mm. That is, the core wire of the PGND cable should be 2.5
mm longer than that of other four cables.
3.
Strip the insulation layer of each core wires by 12mm.
End
Connecting DC Input Cables
Connecting AC output Cables
Connecting PGND Cables
（PE）
Start
