Function introduction of control cable with shielding

The control cable is generally composed of a conductor, an insulating layer, an outer wrap, and an outer sheath. 

The function of the insulation layer is to prevent the occurrence of electric leakage accidents and ensure the safety of electricity consumption.

The function of the outer sheath layer is to reduce the damage and erosion caused by the external environment to the wires and cables, and the inner cladding layer is mainly for protecting the conductors.

However, inside the high-voltage wire and cable, there is also a special protective layer, which we generally call the shielding layer. 

The reason why this shielding layer exists is mainly:

When the current flows, a magnetic field will be generated. 

The larger the current is, the stronger the magnetic field is. 

The high-voltage cable passes a large current. To prevent the generated magnetic field from affecting the surrounding equipment or equipment, the shielding layer is added to ensure the generation. 

The magnetic field is shielded inside the cable.

Certain leakage protection. 

If the cable is damaged during use and leakage occurs, the shielding layer can lead the leaked current to the grounding wire, which plays a role in safety protection. 

At the same time, there is also the role of protecting the power cable conductor.

More specifically, the current flowing through the control cable during use is generally not very large, but it still has this layer of shielding. 

The main function of this shielding layer possessed by the control cable is to shield the external influence of the control cable. 

Because the control cable transmits signals, which are affected by external influences and fluctuate greatly, a shielding protective layer is added, which in turn protects the inside of the control cable. 

And this is the biggest role of controlling the cable shield.