1, code VV: PVC insulated PVC sheathed (copper core) power cable;

2. Code YJV: XLPE insulated PVC sheathed (copper core) power cable;

3. Code names VLV and YJLV: aluminum conductor cables;

4. Code names are ZR-VV and ZR-YJV: flame-retardant cables;

5. Code names NH-VV and NH-YJV: fire-resistant cables;

6. The code is WD-YJY: WDZ;

7. Add f: pre-branch cable number in the code;

8. Add Fz: irradiated cross-linked cable before the code.

Two, electrical equipment with wire and cable and power cable models are mainly composed of the following seven parts:

1, category usage code;

2, conductor code;

3, insulation code;

4, protective layer code;

5. Characteristic code;

6. Armor layer code;

7, the outer protective layer code.

Extended data

The selection of power cable model should be determined according to environmental conditions, laying methods, special requirements of electrical equipment and other factors, and generally considered according to the following principles:

1, aluminum core cable should be used in general environment and places, but copper core cable should be used in strong vibration and special buildings and places with special requirements;

2. For buried cables, armored cables with outer sheath are generally adopted. In places where there is no possibility of mechanical damage, plastic sheathed cables and lead (aluminum) sheathed cables can also be used;

3, in the soil with chemical corrosion or stray current corrosion, should try not to use buried cables. If it is necessary to bury underground, anti-corrosion cables should be used;

4. Generally, cables laid in pipes or tubes are plastic sheathed cables or bare armored cables;

5. For cables laid in cable trenches or cable tunnels, flammable or flame-retardant outer sheaths should not be used. Generally, bare armored cables, plastic sheathed cables and bare lead (aluminum) clad cables are used;

6. When cables are laid in places with large height difference, plastic insulated cables, drip-free cables and dry insulated cables should be adopted.

reference data

Baidu encyclopedia-low voltage cable

Baidu Encyclopedia-Cable Model