Basic model differentiation and function of wires and cables

I Distinction between wires and cables

There is no strict boundary between "wire" and "cable".

Generally, the products with few cores, small diameter and simple structure are called wires. Those without insulation are called bare wires, and others are called cables.

The conductor with larger cross-sectional area (more than 6 mm2) is called large wire, the smaller one (less than or equal to 6 mm2) is called small wire, and the insulated wire is also called cloth wire.

II Different cable classifications

1. Category: H - local communication cable HP - distribution cable HJ - Office cable

2. insulation: Y -- solid polyolefin insulation YF foam polyolefin insulation YP foam / solid polyolefin insulation

3. Inner protective layer: a - plastic coated aluminum tape bonding shielding polyethylene sheath s - aluminum, steel double-layer metal tape shielding polyethylene sheath V - PVC sheath

4. Features: T - Petroleum paste filling G - high frequency isolation C - self supporting

5. Outer protective layer: 23 - polyethylene outer coating wrapped with double-layer anti-corrosion steel belt; 33 - single layer of thin steel wire armored polyethylene coating; 43 - single layer thick steel wire armored polyethylene coating; 53 - single layer steel strip corrugated longitudinal armored polyethylene outer coating; 553 - double layer steel strip corrugated longitudinal armored polyethylene outer coating

III Cable model code

1. Purpose code - not marked as power cable, K is control cable and P is signal cable;

2. Insulation code - Z oil impregnated paper, X rubber, V polyvinyl chloride, YJ cross-linked polyethylene

3. Conductor material code - not marked as copper, l is aluminum;

4. Inner sheath code - Q lead package, l aluminum package, H rubber sleeve, V PVC sheath

5. Derived code - d no trickle, P dry insulation;

6. Code of outer sheath

7. Special product code - th wet tropics, Ta dry tropics;

8. Rated voltage - unit: kV

IV Functions of different cables

1. SYV: solid polyethylene insulated RF coaxial cable

2. SYWV (y): physical foaming polyethylene insulated cable TV system cable, video (radio frequency) coaxial cable (SYV, SYWV, syfv) - suitable for closed-circuit monitoring and cable TV engineering

SYWV (y), sykv cable TV and broadband network special cable structure: (coaxial cable) single oxygen free round copper wire physical foaming polyethylene (insulation) (tin wire) (aluminum), polyvinyl chloride (polyethylene)

3. Signal control cable (RVV sheathed wire, RVVP shielded wire) - applicable to building intercom, anti-theft alarm, fire fighting, automatic meter reading and other projects

RVVP: copper core PVC insulated shielded PVC sheathed flexible cable, voltage 300V / 300v2-24 core - purpose: instrument, instrument, intercom, monitoring and control installation

4. RG: physical foamed polyethylene insulated access network cable - used to transmit data analog signals in coaxial fiber hybrid network (HFC)

5. Kvvp: PVC sheathed braided shielded cable - purpose: signal transmission, control and measurement of electrical appliances, instruments and power distribution devices

6. RVV (227iec52 / 53) PVC insulated flexible cable - purpose: household appliances, small electric tools, instruments and power lighting

7. Avvr PVC sheathed flexible cable for installation

8. Sbvv HYA data communication cable (indoor and outdoor) - used for connection of telephone communication and radio equipment and junction box of telephone distribution network

9. RV and RVP PVC insulated cables

10. RVs is applicable to small instruments, power instruments and household appliances

11. BV and BVR PVC insulated cables - purpose: suitable for fixed wiring of electrical instrument equipment and power lighting

12. Rib speaker connecting line (fever line)

13. KVV PVC insulated control cable - purpose: signal transmission, control and measurement of electrical appliances, instruments and power distribution devices

14. SFTP twisted pair transmission telephone, data and information network

15. Ul2464 computer cable

16. VGA display cable

17. SYV coaxial cable transmits RF signals in wireless communication, broadcasting, monitoring system engineering and relevant electronic equipment (including integrated coaxial cable)

18. Sdfavp, sdfavvp, syfpy coaxial cable, special for elevator

19. Jvpv, jvpvp and jvpv copper core PVC insulated and sheathed copper wire braided computer control cables