Shielded and unshielded cables are two different types of cables that are used in various electronic and communication applications. The main difference between the two is whether there is a shielding layer inside the cable. A shielding layer is a protective layer that can reduce electromagnetic interference and radio frequency interference.
structure
The main feature of shielded cables is the addition of an additional layer of conductive material around the internal conductors of the cable, which is usually composed of metal foil or woven mesh. This additional conductive material protects the conductor carrying the signal from external electromagnetic interference, serving as a shielding layer.
Shielding layer effect
Shielding effect: The current passing through the power cable is relatively large, and a magnetic field is generated around the current. In order to not affect other components, the shielding layer can shield this electromagnetic field inside the cable. The shielding layer of shielded cables can effectively prevent electromagnetic interference from affecting the transmitted signal. This function is particularly important in environments with high interference possibilities, such as industrial environments or areas with many electronic devices
Grounding protection function: If there is damage inside the cable core, the leaked current can flow along the shielding layer, such as the grounding grid. At this time, the shielding cable plays a safety protection role.
application
Shielded cables are generally used in places with explosive hazards in mining, gas, petrochemical and other engineering projects. Due to the fact that electrical sparks and thermal effects are the main causes of explosive gas explosions, from the perspective of system wiring, shielded cables are composed of many distributed capacitors, inductors, and other components, thus storing a certain amount of energy during signal transmission. Once the capacitor malfunctions, this energy will be released, affecting the safety of the system.
So the shielded cable itself carries less charge, is less prone to generating sparks, has excellent resistance to external electromagnetic field interference, and does not generate external interference.
What Are Unshielded Cables?
Unshielded cables are cables that do not contain a protective shield for their wires. Instead, they are helically wrapped and twisted together during manufacture in a way that helps to prevent malfunction from sources such as EMI. While unshielded cables do offer less protection from interference, they are also far more pliable, versatile, inexpensive, thin, lightweight, and easy to install and maintain than shielded cables.
Structure: Unshielded cables have no shielding layer inside the cable, but the conductors are usually insulated
advantage：Unshielded cables are more flexible and cost-effective
application：Local area networks, security systems, home networks, voice and television channel transmission, smart home systems, medical systems, audio conferencing systems, and other fields.
Key Differences Between Shielded Cables and Unshielded Cables
The key differences between the two options are in the size and flexibility of the cable and whether the environment requires added protection. Will the cable be exposed to high levels of EMI and other electrical noise, such as at a radio station or an airport? If so, a shielded cable is probably your best bet. Will the cable need to be replaced soon, or is it a complicated installation? If so, an unshielded cable will make assembly or replacement easier. An unshielded cable is likely the option when installing office LANs or network cabling systems.
In the selection of shielded and unshielded cables, full consideration should be given to the scenarios in which they are used. If electromagnetic interference is not the main issue and cost and flexibility are emphasized, choosing unshielded cables is very appropriate. But if electromagnetic interference is the main issue, then in order to protect signal integrity, shielded cables need to be considered.
Shaanxi Woquan Trading Co., Ltd. was established in 2016, specializing in the manufacture of cables and wires. The company built and expanded 80 acres (53,333 square meters) of factory buildings and new production line equipment. The company has more than 20 professional and technical personnel.
Mainly produces "Woquan" brand Power Electric Cable, Specialty Cables, Rubber Cables, New Energy Cables, House Wiring Electrical Cable, etc.
Obtained a number of honorary certificates. In terms of quality, our company strictly implements ISO90001quality management system certification. In-depth study in accordance with standards, improve quality, professional cable design and manufacture, professional engineering and technical personnel service team, provide customers with comprehensive and comfortable consulting after-sales service. The company adheres to the policy of "emphasizing quality and reputation", and is willing to cooperate with customers at abroad for win-win cooperation and common.
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