Chapter 4 Electrical Installation
Shenzhen Hpmont Technology Co., Ltd.
-10-
HD09 Series User Manual V1.1
4.1
Electric Requirements
4.1.1
Grounding Requirements
Before grounding, the ground terminal of the inverter must be grounded reliably.
There is leakage current to the inverter, ground terminal PE must be grounded, and with the
grounding point as close as possible, grounding area as large as possible, and to ensure that the
grounding resistance is less than 10Ω.
Do not share the ground wire (A) with other power equipment. It is best to have a special grounding
pole (B), but you can also share the ground (C).
If you use several inverters at the same time, you can take a special grounding or common ground way
grounding.
4.1.2
Wiring Requirements
To avoid coupling, the power cables, motor cables and control cables must be installed separately and
ensure a sufficient distance, especially when the cables are installed in parallel and the extension
distance is long.
If the signal cable must pass through the power cable or motor cable, it must pass vertically (90°), as
shown in the following figure.
The power cables, motor cables and control cables should be distributed in different pipelines.
Danger
HD09
Other
HD09
PE
PE
A. Sharing grounding wire
PE
PE
B. Dedicated grounding pole
PE
PE
C. Sharing grounding pole
Other
HD09
Other
HD09
Power supply cable
Power supply cable
Motor cable
Motor cable
Control cable
Control cable
90°
>20 cm
90°
>50 cm
>30 cm