Folding model
Composition and sequence
The model composition and sequence of wires and cables are as follows: [1: category and purpose] [2: conductor] [3: insulation] [4: inner sheath] [5: structural features] [6: outer sheath or derivative] - [7: service features]
Items 1-5 and 7 are represented by pinyin letters, and polymer materials are represented by the first letter of the English name, and each item can be 1-2 letters; Item 6 is 1-3 numbers.
Common code
Purpose code - not marked as power cable, K - (control cable), P - (signal cable);
Conductor material code - not marked as copper (or Cu), L - (aluminum);
Code of inner sheath - Q - (lead package), L - (aluminum package), H - (rubber sleeve), V - (PVC sheath). Generally, the inner sheath is not marked;
Outer sheath code - V - (polyvinyl chloride), Y - (polyethylene power cable);
Derived code - D - (no trickle), P - (dry insulation);
Special product code - th - (wet tropical zone), Ta - (dry tropical zone), Zr - (flame retardant), NH - (fire resistant), wdz - (low smoke halogen-free, enterprise standard).
Deletion rule
Principle of omission in model: copper is the main conductor material used in wire and cable products, so the copper core code t is omitted, except for bare wires and bare conductor products. Bare wires and bare conductor products, power cables and electromagnetic wires do not indicate the category code, and wires and cables for electrical equipment and communication cables are not listed, but the category or series code, etc.
Item 7 is a mark for various special use occasions or additional special use requirements, which is marked with Pinyin letters after "-". Sometimes, in order to highlight the item, write it first. Such as Zr - (flame retardant), NH - (fire resistant), wdz - (low smoke and halogen-free, enterprise standard), th - (for hot and humid areas), FY - (anti termite, enterprise standard), etc.
primary coverage
1. SYV: solid polyethylene insulated RF coaxial cable, coaxial cable, RF signal transmission in wireless communication, broadcasting, monitoring system engineering and related electronic equipment (including comprehensive coaxial cable)
2. SYWV (y): physical foam polyethylene insulated cable TV system cable, video (RF) coaxial cable (SYV, SYWV, syfv) is 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 foamed polyethylene (insulation) + (tin wire + aluminum) + polyvinyl chloride (polyethylene)
3. Signal control cable (RVV sheathed wire, RVVP shielded wire) is applicable to building intercom, anti-theft alarm, fire control, automatic meter reading and other projects
RVVP: copper core PVC insulated shielded PVC sheathed flexible cable, voltage 250V / 300V, 2-24 core purpose: instrument, instrument, intercom, monitoring and control installation
4. RG: physical foamed polyethylene insulated access network cable is 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) is used for connection of telephone communication and radio equipment and junction box of telephone distribution network
9. RV, RVP: PVC insulated cable
10. RVs, RVB: suitable for connecting cables of household appliances, small electric tools, instruments, meters and power lighting
11. BV, BVR: PVC insulated cable, purpose: suitable for fixed wiring of electrical instrument equipment and power lighting
12. Rib: speaker cable (fever cable)
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: monitor cable
17. Sdfavp, sdfavvp, syfpy: coaxial cable, special for elevator
18. Jvpv, jvpvp, jvpv: copper core PVC insulated and sheathed copper wire, braided computer control cable
