01
Application
Two core armored electrical cable is used for supplying power to building, school, hospital etc.
Standard
IEC60228, IEC60502-1, IEC60332,
Construction
Conductor: Copper or Aluminum
Insulation: XLPE
Inner Sheath:PVC
Armored:galvanized steel wire
Outer Sheath: PVC
Insulation: XLPE
Inner Sheath:PVC
Armored:galvanized steel wire
Outer Sheath: PVC
Parameters of Two Cores underground cable
| Nominal Cross Section | Diameter of Conductor (Approx.) | Nominal Insulation thickness | Nominal Inner Covering thickness | Nominal Steel Wire dia. | Nominal Sheath thickness | Overall Diameter (Approx.) |
| mm² | mm | mm | mm | mm | mm | mm |
| 2x1.5 | 1.41 | 0.7 | 1 | 0.8 | 1.8 | 12.7 |
| 2x2.5 | 1.81 | 0.7 | 1 | 0.8 | 1.8 | 13.7 |
| 2x4 | 2.31 | 0.7 | 1 | 0.8 | 1.8 | 14.7 |
| 2x6 | 2.81 | 0.7 | 1 | 1.25 | 1.8 | 16.7 |
| 2x10 | 3.61 | 0.7 | 1 | 1.25 | 1.8 | 18.2 |
| 2x16 | 4.51 | 0.7 | 1 | 1.25 | 1.8 | 19.8 |
| 2x25 | 5.61 | 0.9 | 1 | 1.6 | 1.8 | 23.7 |
| 2x35 | 6.71 | 0.9 | 1 | 1.6 | 1.8 | 25.7 |
| 2x50 | 8.1 | 1 | 1 | 1.6 | 1.9 | 29.1 |
| 2x70 | 9.41 | 1.1 | 1 | 2 | 2 | 33.1 |
| 2x95 | 11.1 | 1.1 | 1.2 | 2 | 2.1 | 37.2 |
| 2x120 | 12.5 | 1.2 | 1.2 | 2 | 2.3 | 40.6 |
| 2x150 | 13.7 | 1.4 | 1.2 | 2.5 | 2.4 | 45.5 |
| 2x185 | 15.2 | 1.6 | 1.4 | 2.5 | 2.6 | 49.8 |
| 2x240 | 17.4 | 1.7 | 1.4 | 2.5 | 2.7 | 55.2 |
| 2x300 | 19.4 | 1.8 | 1.6 | 2.5 | 2.9 | 60.3 |
| 2x400 | 22.5 | 2 | 1.6 | 2.5 | 3.1 | 67.6 |
The difference of XLPE and PVC
XLPE (cross-linked polyethylene) and PVC (polyvinyl chloride) are two distinct insulation materials with unique advantages and disadvantages when used in low-voltage cables.
The advantages of XLPE insulation include:
XLPE insulation exhibits high heat resistance. XLPE insulation exhibits high heat resistance, enabling it to function stably at elevated temperatures over extended periods.
The material exhibits excellent electrical properties. The low dielectric loss and high insulation resistance of XLPE insulation facilitate improvements in the transmission efficiency and stability of the cable.
The chemical corrosion resistance of XLPE insulation is as follows: XLPE insulation demonstrates effective resistance to corrosion by certain chemical substances, rendering it suitable for utilisation in specific environments.
The advantages of PVC insulation include:
A reduction in expenditure: The cost of PVC as an insulating material is relatively low, resulting in a more economical price point for PVC-insulated cables.
The material exhibits favourable processing characteristics. The PVC material is readily processible and malleable, and the manufacturing process is relatively straightforward, rendering it amenable to mass production.
The disadvantages of XLPE insulation include:
A further disadvantage of XLPE insulation is that it is more expensive. In comparison to PVC, the manufacturing cost of XLPE is higher, resulting in a higher price point for XLPE insulated cables.
The necessity for compliance with rigorous environmental standards: The production process of XLPE insulation is subject to stringent environmental regulations and necessitates the implementation of robust environmental protection measures.
The disadvantages of PVC insulation include:
A further disadvantage of PVC insulation is its poor heat resistance. The heat resistance of PVC insulation is relatively poor, rendering it unsuitable for long-term use in high-temperature environments.
Inadequate environmental protection: The production and utilisation of PVC materials may result in the generation of deleterious substances, which will inevitably exert a detrimental impact on the environment.
In conclusion, XLPE insulation exhibits superior heat resistance and electrical properties, rendering it an optimal choice for applications requiring enhanced performance. Conversely, PVC insulation offers a cost-effective alternative with commendable processing capabilities, making it a suitable option for general low-voltage cable applications. In selecting insulation materials, it is important to consider the specific requirements of the application