Advantech 5000 Series Manual de usuario descargar pdf (Pagina 280)

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101

Appendix F

3. Noise Reduction Techniques

4. Check Point List

F.1 Grounding

1.1 The Earth for reference

Why we think the

EARTH as GROUND?

As you know that

the EARTH can t be conductive indeed.

But those parallel

resistors

make the

EARTH as a single

point and just

for reference.

Figure F-1 : Think the EARTH as GROUND

• Why we think the EARTH as GROUND?

As you know that the EARTH can not be conductive indeed. But all

buildings base on EARTH. Steels, concretion and relational cables

such as Lighting Arrester and power system were connected to

EARTH. Think them as resistors, then those infinite parallel resistors

make the EARTH as a single point and just for reference.

ADAM-5000 F-3

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Advantech 5000 Series Manual de usuario Pagina 280

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