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6.3
Reason why grounding with P clips or U clips is
required
If stripping the cable outer sheath will affect the safety of the machine such as electric shock or injury, it is
recommended to install additional protective covers or enclosures.
A shielded cable is a cable covered with metal foil or braid (mesh braid). High-frequency noise passes through the shield and
releases unwanted noise to the ground, thereby suppressing the radiated emission level.
Grounding a shielded cable using a P clip or U clip reduces the impedance to the ground and allows noise current to flow
more smoothly than soldering a wire to the shield or twisting and stretching the shield to ground. Thus, grounding with the P
clips or U clips is recommended.
• Grounding example of shielded cable
Example of grounding
with the P clip
Example of grounding
with the U clip
6.3 Reason why grounding with P clips or U clips is required
Solder
Example of grounding
with wire soldering
6 EMC COUNTERMEASURES AND EFFECTS
6
31
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