Shielded Cable Features And Uses

The role of cable with shielding

Shielded cable refers to the electromagnetic induction shielding characteristics of the cable by wire hand-knitted or steel tape overwrap. KVVP shielded 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 machinery and equipment that must be shielded from electromagnetic induction signals, cable shielding is the cable surface mesh structure of the braided wire end has Grounded, can make the external electromagnetic wave radiation and electromagnetic field radiation source immediately into the ground, without affecting the inner cable line.

The role of shielded cables

Generally used for lines with higher frequencies and lower data signal pulse signals, such as cable digital TV, inverter governor to motor lines, analog input lines, and some influential transmission lines, such as computer shielded cables, etc. As long as the cable with a shield is called shielded cable, power engineering cables and running cables can be retrofitted with a shield. Computer and instrument panel cables are usually shielded to avoid the influence of external electromagnetic wave signals, shielded cables are suitable for motor connection cables, especially for inverter speed controllers and servo motor drives. Suitable for all polyurethane wire protectors and copper core cable insulation, suitable for cable drag chains, especially for extremely harsh software environments and places with corrosive coolants and grease.

When the shield is grounded at one end, there is an induced voltage between the shield and the ground at the non-grounded 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-end grounding is the use of potential difference suppression to remove interference signals. This type of grounding is suitable for short lines, and the induced voltage corresponding to the length of the cable cannot be higher than the operating voltage. The presence of electrostatic induced voltage.

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