A
B
D
C
Grounding screw
.14.
.15.
5.
Installation
5.
Installation
5.3.1 Grounding
2) Prepare OT terminals: M6.
Solis recommends 2 ground protection methods: Through grid terminal connection
and external heat sink connection.
If AC terminal is used to connect ground, please refer to the contents of 5.3.2.
If the heat sink is used to connect the ground, please follow the steps below:
1) Prepare the grounding cable: recommend to use the
≥
6mm
²
outdoor
copper-core cable.
Important:
3) Strip the ground cable insulation to a suitable length(see Figure 5.8).
Figure 5.8 suitable length
Important:
Figure 5.9 strip wire
Important:
For multiple inverters in parallel , all inverters should be connected to the
same ground point to eliminate the possibility of a voltage potential existing
between inverter grounds.
B (insulation stripping length) is 2mm~3mm longer than A (OT cable
terminal crimping area) 2mm~3mm.
After crimping the terminal to the wire, inspect the connection to ensure the
terminal is solidly crimped to the wire.
5) Remove the screw from the heat sink ground point.
6) Connect the grounding cable to the grounding point on the heat sink,and tighten the
grounding screw, Torque is 3Nm(see figure 5.10).
Figure 5.10 Fixed cable
For improving anti-corrosion performance,
after ground cable installed, apply silicone or paint is preferred to protect.
Important:
4) Insert the stripped wire into the OT terminal crimping area and use the hydraulic
clamp to crimp the terminal to the wire (see Figure 5.9).
