What if the ground wire of the power filter is not there?

This is safer, and the grounding of the filter: the filter is generally a metal shell, so the metal shell and the bottom plate of the metal chassis should be fully contacted.

If there is insulation on the chassis floor, it should be removed. The filter has several basic installation methods, such as bottom plate device, panel socket device and circuit board insertion. The filter of panel IEC socket device has various convenient structures, such as slim size, safety, switch integration, and can be installed on the cabinet wall. Its disadvantage is that the selection scale of filter circuit parameters is small and the rated current is generally small. Suitable for small equipment.