Shielded cable, characteristics and use of shielded cable

The role of cable belt shielding

Shielded cable refers to the cable with electromagnetic induction shielding characteristics, which is manually braided by iron wire or outfitted by steel belt. KVVP shielded control cable is suitable for the connection line of the control and monitoring loop of rated cable 450/750V and below, mainly to prevent the interference of electromagnetic waves. It is suitable for transformers and similar machines and equipment that must shield electromagnetic induction signals. Cable shielding means that one end of the braided wire of the network structure on the surface of the cable has been grounded. Can make the external electromagnetic radiation and electromagnetic field radiation source immediately into the ground, without affecting the inner cable.

Function of shielded cable

Generally used for high frequency, low data signal pulse signal line, such as cable digital television, frequency conversion governor to the motor line, analog input line, and some influential transmission lines, such as computer shield cable, etc. As long as the cable has a shielding layer, it is called a shielded cable. Power engineering cables and operation cables can be equipped with a shielding layer. Computer and instrument panel cables are usually shielded from external electromagnetic signals. 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 layer, suitable for cable chain, especially suitable for extremely harsh software environment and corrosive coolant and grease places.

When one end of the shield body is grounded, there is an induced voltage between the shield body and the ground of the non-grounded end, which is positively correlated with the length of the cable, but the shield body has no electric field basis for potential difference. Single-ended grounding uses potential difference suppression to remove interference signals. This grounding mode is suitable for short lines, and the induced voltage corresponding to the cable length cannot be higher than the operating voltage. Presence of electrostatic induced voltage.

Well, the above is about the "shielded cable, shielded cable characteristics and uses" of the introduction, hope to help you! We suggest you continue to pay attention to Ruiyang Cable for more information.