What Do The Letters On Cable Mean?

What do the English letters, models and specifications on cables and wires represent? Which lines are RVV? Which lines are RVB? Which places and environments are they generally used in? This is all about the basic knowledge of cables and wires. work efficiency.

1. The meaning of the universal identification of cables

(1) Number: B-cable (sometimes not specified)

(2) Electrical conductor: T-copper core (usually default setting description), L-aluminum core, R-soft copper

(3) Insulation layer: V-polyethylene, X-eraser, F-neoprene eraser

(4) Wire grommet: V-polyethylene

(5) Others: R is a flexible cable, P is a shield, and B is a parallel plane

2. Examples of common cables

(1) BV, BLV: polyethylene insulated cable. Same as type BX, but with good moisture and weather resistance.

(2) BVR: polyethylene insulating layer flexible cable. Same as type BV, only used in places where softness is required during installation.

(3) BVV, BLVV: polyethylene insulation and sheathed cables. The same as BV type, it is used in places with high requirements for wet and cold and mechanical equipment safety protection, and can be directly buried in the soil layer.

(4) BV-105, BLV-105: High temperature resistant 105℃ polyneon butadiene insulated cable is the same as type B, used in high temperature environment of 45℃ and above.

(5) BVR-105: High temperature resistant 105 ℃ polyethylene insulation flexible cable. Same as BVR type, used in high temperature environment of 45℃ and above.

(6) RV: single-core copper core vinyl chloride insulating layer insulating layer copper wire. It is used for wiring of various mobile home appliances, instrument panels, communication products, and automation technology equipment; it is also used as an internal installation wire, and the operating temperature during installation shall not be less than -15 °C.

(7) RVB: Two-core flat copper-core polyethylene insulated copper wire. It is used for wiring of various mobile home appliances, instrument panels, communication products, and automation technology equipment; it is also used as an internal installation wire, and the operating temperature during installation shall not be less than -15 °C.

(8) RVS: Two-core copper-core polyethylene stranded copper wire. It is used for wiring of various mobile home appliances, instrument panels, communication products, and automation technology equipment; it is also used as an internal installation wire, and the operating temperature during installation shall not be less than 15 °C. Places with high requirements and frequent movement and bending.

(9) AVR; electroplated tin copper core polyethylene insulation layer flat connection copper wire.

(10) RV-105: copper core high temperature resistant 1050C polyethylene insulation layer polyethylene insulation layer connecting copper wire.

3. Usually the type and specification series of power transmission lines are produced

(1) Compression resistance; 300/500V, 450/750V

(2) Specifications and models; 1.5, 2.5, 4, 6, 10, 16, 25, 32, 50, 70, 95, 120, 150, 185, 240, 300, 400.