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Screened cable and unscreened cable are important connecting components of electrical equipment, they play a big role in the transmission of electric power and signal. In the electric industries, these two kinds of cables are popularly using if comparing with other electric wires. In today’s article, Henan Shenbei Cable will introduce the differences between them in detail.
There are four different parts to this article:
First of all, we will introduce their concepts separately.
Another name for the braided screened wire is shielded wire. As its name, the biggest feature of this electric wire is the shielding layer. The shielded power cable is covering the conductor in the shielding layer, to protect the cable from external environmental factors and electromagnetic interference. The shielding layer can be made of different materials, such as copper, aluminum, and other metal material, etc. As a factory, we suggest using two shielding layers of screened wire. That is one cable using two shielding layers, tin foil shielding, and metal mesh shielding to achieve a more perfect shielding effect.
Mesh braiding shielding layers include copper mesh and alloy braiding mesh with different densities and different prices. Copper shielded cable cost will be higher than alloy mesh shielding cable, and high-density mesh shielding cost will be higher than low-density mesh shielding. But the shielding effect is also directly proportional to the price. Users can choose suitable shielding material and braid shielding density according to their purpose and budget. Below is a picture of a double-shielded cable.
Secondly will introduce what is unshielded cable.
Different from shielded cable, unshielded cable hasn’t the shielding layer. It is twisting the conductors together to prevent malfunctions caused by electromagnetic interference. The unshielded power cable hasn’t so many protecting layers compared with shielded electrical wire, but they're more flexible, lighter, thinner, easier to install, cheaper, and easier to maintain. The transmit information speed is faster if electromagnetic interference is not involving.
The structure of unshielded cable is simple, it just includes PVC outer sheath, PVC insulation, and conductor. The conductor also has different materials, such as copper, aluminum, tinned copper, CCA, and other metal materials. But for better electric cable performance, we recommend ofc copper as the first choice for you, to achieve cost and effectiveness. Below is a picture of an unshielded electric wire.
In the next part, we will enter into the main topic of this article, and list the differences between these two kinds of PVC cables.
After understanding the differences between shielded and unshielded cables, you may have a better knowledge of how to choose them. At the end of this article, we will introduce the types of these cables for your choice.
RVV cable belongs to the kind of unshielded multicore flexible cable, and RVVP cable belongs to the kind of shielded control cable. These two kinds of cables are the most commonly using electric copper cable in the industrial market.
For more information about UTP and SFTP network cable, you can enter Henan Shenbei Industrial Co. Ltd. to know more information.
Henan Shenbei Industrial Co, Ltd. is a professional factory of manufacturing and selling all kinds of electric cables for 20+ years, with the strength of high quality, competitive price, and good service. The professional engineer has enough ability to design and customize PVC copper cables according to customers’ requirements. If you have any needs, you can enter www.shenbeicable.com
Have you well understood the differences between screened cable and unscreened cable? Welcome to Henan Shenbei to buy them, special discount and 24-hour customer service are waiting for your inquiry.
We can design and manufacture various cables according to your requirement of special cable construction and special occasion and usage.