Shielded Cables from China manufacturer - Beijing Tianyuan Rongli Technology Co., Ltd.

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Electrical wire PVC insulation Power transmission Electrical safety Signal Integrity High-Frequency Performance Braided Shielding Electromagnetic Protection

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Cables usually use two types of shielding layers: foil and braided layers. Aluminum foil shielding uses a thin layer of aluminum, usually attached to a carrier such as polyester, providing 100% conductor coverage. The braid is a mesh made of bare or tin-plated copper wires, providing a low-resistance ground path and making it easier to terminate by crimping or welding when connecting connectors.

The main advantages of shielded cables include reducing electromagnetic interference, improving signal quality, enhancing the durability of the cable, ensuring personal safety, and promoting environmental protection and energy conservation.

1. Reducing electromagnetic interference

Shielding technology effectively blocks the intrusion of external electromagnetic fields by adding conductive layers or magnetic materials to the cable, reducing the impact of electromagnetic interference on signal transmission. This is of great significance for ensuring the normal operation of electrical systems and improving the reliability of data transmission.

2. Improving signal quality

Shielding technology significantly improves the transmission quality of signals in the cable by suppressing electromagnetic interference and reducing signal attenuation. Especially in high-frequency signal transmission, shielded cables can effectively reduce signal attenuation and distortion, ensuring the stability and accuracy of the signal.

3. Enhancing the durability of the cable

Shielding technology enhances the structural strength and protection of the cable, improving the durability of the cable. For example, some shielded cables use wear-resistant, corrosion-resistant materials as the outer sheath, effectively extending the service life of the cable. In addition, the shielding layer can also serve as a heat dissipation function, helping the cable maintain good performance in high-temperature environments.

4. Ensuring personal safety

Shielding technology reduces safety risks during the use of cables by providing additional electrical isolation and protective measures. For example, shielded cables used in medical equipment, rail transit, and other fields can effectively prevent electromagnetic radiation from affecting the surrounding environment and people, ensuring the safety of people's lives and health.

5. Promoting environmental protection and energy conservation

The application of shielding technology in cables helps achieve environmental protection and energy conservation goals. By reducing electromagnetic interference and signal attenuation, shielded cables can reduce energy consumption during transmission, improving energy efficiency. In addition, the use of some new shielding materials such as environmentally friendly conductive polymers not only has good shielding effects but also meets environmental requirements.

Shielded cables are suitable for a variety of scenarios, including the following:

1. High-frequency interference environments

When the signal frequency transmitted in the circuit is higher than 100kHz, high-frequency interference will occur, affecting signal quality. Using shielded wires can effectively reduce high-frequency interference and maintain signal stability and quality.

2. Near high-voltage equipment

Near high-voltage equipment such as transformers, strong electromagnetic field interference will occur, affecting signal transmission. Using shielded wires can reduce this electromagnetic field interference and protect the normal transmission of signals.

3. Data transmission lines

In data transmission lines, such as network lines, audio lines, etc., shielded wires can effectively reduce electromagnetic interference and improve signal quality. Especially in applications that require high-quality and reliable signal transmission, such as the transmission of audio and video signals, the role of shielded wires is particularly important.

4. Preventing crosstalk

When multiple wires transmit signals in adjacent areas, crosstalk is likely to occur, that is, the signal of one wire may interfere with the signal of another wire. Using shielded wires can effectively reduce this crosstalk situation, ensuring the independence and stability of the signal.

5. Sensitive equipment connections

For some equipment that is sensitive to electromagnetic interference, such as precision instruments, medical equipment, etc., using shielded wires to connect can protect the equipment from the influence of external electromagnetic interference, ensuring the normal operation of the equipment and the accuracy of the data.

6. Specific environmental requirements

In some special environments, such as industrial control, aerospace, and other fields, due to the complex electromagnetic environment and high requirements for signal transmission, shielded wires are needed to ensure the stability and reliability of the signal.

7. How shielded cables work

Shielded cables work by covering a layer of metal (usually copper) or conductive material on the outside of the signal wire and connecting it to ground or a ground wire. This can effectively block the intrusion of external electromagnetic fields and reduce interference to the signal wire. At the same time, the shielding layer can also prevent the signal wire from radiating electromagnetic energy, further reducing the generation of electromagnetic interference.

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