Cable over braiding and shielding is applied to a cable to reduce electromagnetic influence from internal and external sources, improving the overall operational effectiveness of a cable whilst also increasing the cables mechanical strength.
We offer comprehensive cable braiding and screening solutions, ranging from fine single strand braids to heavy duty multiple strand braiding. We can also provide foil shielding with drain strands and lapped screening where flexibility is more of a concern.
The materials we use include plain copper (PAC), tin plated copper (TAC), nickel plated copper (NAC), oxygen free copper (OFC), silver plated copper (SPC), nickel (Ni), aluminium (AI), phosphor bronze (Phos Bronze), stainless steel (SS), galvanised steel (GSWB), various textiles, heavy duty kevlar braids and nomex.
We have the capability to screen cables up to 35mm in diameter on either of our 16/24/32/48 carrier braiders.
Our approach to cable over braiding and screening
We provide full consultation on screening and braiding services, determining the correct optical coverage for the environment in which your cable will be used.
Our screening options are versatile too; we can design a cable from the ground up and screen it for you. Other options include adding screening and braiding to a pre-existing cable.
Cable Shielding options
There is a broad range of cable shielding solutions, from simple aluminium foil tapes including drain wires to multiple braids combined with alternative ferromagnetic wraps. Below is a short breakdown of the types of cable screening we carry out at CDC:
Aluminium foil screening
This is the most basic form of electromagnetic screening, and is ideal for low EMI applications. This type of screening would usually include an appropriately sized drain strand to simply connect to ground.
Helically lapped screening
Where flexibility is a concern, for example within a retractable cable, a lapped screen (single direction screen) is applied to significantly increase the cable’s flexibility. This is also the ideal solution for individual wire or twisted pair shielding where an aluminium foil screen is not sufficient, for example within a high temperature cable.
Traditional (woven) cable braid screen
This type of shielding can offer a wide range of % coverage. At CDC, we suggest using multiple fine wires in order to preserve flexibility while providing optimum coverage.