Insulated wire is evenly wrapped around the wire, a layer of non-conductive material, such as: resin, plastic, silicone rubber, PVC, etc., to form an insulating layer, to prevent contact with the outside world caused by leakage, short circuit, electric shock and other accidents Called insulated wire.
R on behalf of the soft copper wire, V on behalf of the PVC insulation, S on behalf of twisted pair, B on behalf of the flat, P on behalf of the shield.
1, RV - PVC insulated single-core cord, the maximum temperature of 65 ℃, the lowest temperature -15 ℃, 250V AC voltage, DC 500V, for the internal wiring equipment and equipment.
2, RVB: parallel multi-strand cord (flat), as the home often used telephone line bare wire, but one of the core line and RVV core line, two core lines are parallel package in the jacket, usually a care Set two.
3, RVS: twisted strand of soft, that is, the RVB soft core tear, twist can be. Usually two twisted pairs.
4, RVSP: twisted shielded cable.
5, RVVB: PVC sheathed cord (flat type), standard GB / T5023.5-2008 / IEC60227-5: 2003.
6, RVV: multi-strand cord, is the core by the multi-strand copper wire composition, RVV line is the weakest system of the most commonly used cable, the core number of uncertain, single, there are many roots, there are also outside the jacket. But there is no special requirement for the arrangement between the cores.
7, RVVP: copper core PVC insulated shielded PVC sheathed flexible cable, also known as electrical connection anti-interference soft cable, rated voltage 250V / 450V.
