Shielding of electrical cables is a fundamental solution to ensure safety, signal quality, and the reliability of electrical and industrial systems. In this article, we will explore how to shield an electrical cable, which materials and techniques to use, when it is necessary, and which standards to follow for proper installation.
Shielding is a technique that consists of covering an electrical cable conductor with conductive or magnetic materials in order to:
It is used in critical environments such as:
Interference can affect signal quality and system performance. The main types are:
| Type of interference | Description | Common cause |
|---|---|---|
| EMI (Electromagnetic) | Generated by electromagnetic fields from other devices | Motors, transformers, inverters |
| RFI (Radio Frequency) | High-frequency interference | Antennas, radio transmitters |
| Conducted interference | Propagation through the conductor | Galvanic coupling |
The most common causes include:
Shielding can be achieved using different techniques and materials depending on the required level of protection.
| Material | Characteristics | Applications |
|---|---|---|
| Tinned copper | Good conductivity, corrosion resistance | Industrial and automation cables |
| Aluminum | Lightweight, cost-effective, good shielding properties | Data cables |
| Steel | High mechanical strength, less flexible | Harsh environments or crush-risk areas |
Shielded power cables are essential when:
To choose the right shielded cable, consider:
Proper shielding also involves compliance with standards. Key references include:
It is also recommended to follow manufacturer guidelines to ensure optimal performance and durability.
Choosing the right shielded cable can make a significant difference in efficiency and safety. Caviterm is the ideal partner to help you select the best shielded cables for your needs. We offer:
Contact us for a free consultation.
