There are numerous materials that can be used for braids in electrical cables. Their prime use in this section is for electrical screening. Materials used can be plain, enameled, tinned, silver-plated or nickel-plated copper, galvanized or stainless steel, or alloy wires. Braids are formed by weaving ( or plaiting) groups of wires around a core or group of cores or even over the exterior of a cable.
This is the most time consuming and expensive form of screening. It can also add significantly to the weight and size of a cable. However, it is probably the most effective form of screening over the frequency range of 1 kHz to 50MHz. Up to 95% coverage is possible and, when combined with a foil tape, provides 100% coverage over a wider frequency range. Kalestead also offers double braids to provide up to 98% screening coverage.
One of the most common materials for forming braided screens is tinned copper wire, having the added benefit of resistance to oxidation at a reasonable cost.
Braids have the advantage of maintaining coverage when the cable is flexed. They are flexible and durable but not suitable for tight bend radii. Braided screens have become essential in maintaining the integrity of digital transmissions. This has become ever more important with the increasingly widespread development and use of digital equipment. Whatever your requirements, Kalestead will be pleased to work with you to design the perfect cable to fit your application-however demanding that my be!