Different types and uses of insulated wires

R stands for soft copper wire, V stands for PVC insulation, S stands for twisted pair, B stands for flat type, and P stands for shielding.
1. RV: PVC insulated single-core flexible wire, with a maximum operating temperature of 65°C and a minimum operating temperature of -15°C. The operating voltage is 250V AC and 500V DC. It is used for internal wiring of instruments and equipment.
2. RVB: Parallel multi-strand soft wire (flat), just like the bare telephone wire commonly used at home, except that the core wire is the same as the RVV core wire. The two core wires are wrapped in a sheath in parallel. Usually It's two sheaths.
3. RVS: Twisted multi-strand soft wire, which means tearing the soft core of RVB and twisting it. Usually two twisted pairs.
4. RVSP: twisted pair shielded wire.
5. RVVB: PVC sheathed flexible cord (flat type), standard GB/T 5023.5-2008/IEC 60227-5:2003.
6. RVV: Multi-stranded soft wire, that is, the core wire is composed of multiple strands of copper wire. RVV wire is the most commonly used cable in weak current systems. The number of core wires is variable. There are single wires and multiple wires, and there are also protection on the outside. set. However, there are no special requirements for the arrangement of core wires.
7. RVVP: Copper core PVC insulated shielded PVC sheathed flexible cable, also called electrical connection anti-interference flexible cable, rated voltage 250V/450V.
8. BVVR is a copper core PVC insulated PVC sheathed flexible wire with an outer sheath; BVR is a copper core PVC insulated flexible wire with only an insulation layer and no outer sheath. Usually the double plastic wire refers to the BVV series, the first V refers to the PVC insulation, the second V refers to the PVC sheath, and if it is the BV series, it refers to the single plastic wire.