3. Installation
3. Installation
.19.
.18.
D
C
Grounding screw
Figure 3.16 Strip wire
Important:
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.
Figure 3.17 Fixed cable
For improving anti-corrosion performance, after ground cable installed,
apply anti oxidizing grease.
Important:
4) Insert the stripped wire into the OT terminal crimping area and crimp with a hydraulic
crimp tool. (see Figure 3.16).
3.4.1 Grounding
The inverter must be grounded for safety. Two methods are provided.
1. Connect the AC grounding cable. (See Section 3.4.3)
2. Connect the equipment grounding terminal on the heatsink described below.
1) It is recommended to use copper wire for the chassis ground. Either solid conductor
or stranded wire is acceptable. Refer to local code standard for wire sizing.
2) Attach OT terminal: M10.
To connect the grounding terminal on the heat sink, please follow the steps below:
A
B
Important:
3) Strip the ground cable insulation to a suitable length(see Figure 3.15).
Figure 3.15 Suitable length
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.
6) Connect the grounding cable to the grounding point on the heat sink, and tighten the
grounding screw, Torque is 7.4-8.9 ft.lbs(see figure 3.17).
