True Options for the Effective Now for You Regarding the Use of Coaxial Power Connector

There are different screening methods for cables performing various tasks. This is a foil screen, a woven screen and a combination of foil and braid. Braid – a screen that is made of a set of thin conductors woven in the form of a grid, encompassing a central conductor with an internal dielectric.

The Feature of the Braid

The braid usually has less resistance than the foil, and is characterized by better resistance to extraneous electromagnetic field and electromagnetic interference. The leads have a different character and origin. This can be both low-frequency interference (for example, from an industrial power network) and high-frequency (HF noise from the operation of electronic devices and the sparking of electric machines).

The Screens

The braid can be combined with other kinds of screens, for example with aluminum or copper foil, which give the greatest value of screening efficiency, because The foil allows to provide up to 100% screening in combination with a braid (see Figure 1). Given that the braid can provide shielding efficiency up to 90% to get 100%, two braids are needed, which significantly increases the cost of the cable, its weight and reduces the flexibility. It is much easier to achieve 100% screening efficiency by combining braids and foils. The effectiveness of shielding coaxial cable can be judged by its design: the higher the density of the external conductor (screen), the greater the value of this parameter.

The Cable Options

  • The coaxial power connector in which the screen is aluminum foil or wrapping foil material is not suitable for television observation systems (STN). Such cables are commonly used to transmit radio frequency signals in transmission systems and in signal distribution systems from a collective antenna.
  • Cables in which the screen is made of aluminum or foil can distort video signals so much that the image quality falls below the level required in surveillance systems, especially when the cable length is large, so these cables are not recommended for use in STN systems.

The external enclosure provides the necessary protection for the internal components of the cable. The sheath protects the cable from climatic, chemical attack and protects from sunlight. According to the type of sheath, the cables can be divided into standard and special versions.