Shielded cable refers to the cable with electromagnetic induction shielding characteristics that is hand-braided by iron wire or steel tape outsourcing. KVVP shielding control cable is suitable for rated cable 450/750V and below control, monitoring circuit connection line, mainly to prevent electromagnetic wave interference, suitable for transformers and similar machines and equipment that must shield electromagnetic induction signal, cable shielding refers to the cable surface network structure braid wire end has been grounded, External electromagnetic radiation and electromagnetic radiation sources can be immediately entered the ground without affecting the inner cable line.
The function of shielding cable.
It is generally used for lines with high frequency and low data signal pulse signal, such as cable digital television, frequency conversion governor to motor lines, analog input lines, and some influential transmission lines, such as computer shielded cables. As long as the cable has a shielding layer, it is called a shielding cable, and the power engineering cable and the operation cable can be equipped with a shielding layer. Computer and instrument panel cables are usually shielded to avoid the influence of external electromagnetic wave signals, and shielded cables are suitable for motor connection cables, especially for variable frequency governors and servo motor drives. Suitable for all polyurethane wire protectors and copper cable insulation, suitable for cable tow chains, especially for extremely harsh software environments and corrosive coolant and grease places.
When one end of the shield is grounded, there is an induced voltage between the shield and the ungrounded end, and the induced voltage is positively related to the length of the cable, but the shield has no electric field basis for potential difference. Single-terminal grounding uses potential difference suppression to clear interference signals. This grounding method is suitable for short lines, and the induced voltage corresponding to the cable length cannot be higher than the working voltage. Presence of electrostatic induced voltage.
Post time: Sep-29-2024