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What is the importance of wire and cable insulation?

Updated:26-08-2020
Summary:

The electrical properties of cable and wire can be sign […]


The electrical properties of cable and wire can be significantly affected by insulation. As a result, high-frequency communication cables will require polyethylene (PE) insulation because attenuation and capacitance are minimal when using this type of insulation. In addition, insulating materials also include factors such as heat resistance and flame retardancy, mechanical toughness, moisture resistance, ionization resistance, service life, and flexibility.
When choosing the type of cable to be used, be sure to keep the insulation and shielding factors in mind. Insulation and shielding can provide effective protection when used in combination, although they both play an independent role in the function of the coaxial cable. Although the insulation layer cannot provide protection against electromagnetic interference, it can help the cable work properly by preventing the center conductor and shielding material from contacting the cable. On the other hand, the cable shield is like an electromagnetic energy interceptor, which prevents electrical interference from spreading to the center of the cable and destroying the data signal.

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