Durable Insulated Wires for Overhead Applications in Aluminum

Overhead Insulated Conductor Specification Table

• Copper (Cu): High conductivity, good mechanical properties.
• Aluminum (Al): Lightweight, cost - effective.
• Aluminum Alloy: Improved strength and conductivity compared to pure aluminum. |
  | Conductor Cross - sectional Area (mm²) | 16, 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, 400 (customizable options available) |
  | Insulation Material |
• Cross - linked Polyethylene (XLPE): High thermal resistance, excellent electrical insulation performance, and good mechanical properties.
• Polyethylene (PE): Cost - effective, suitable for low - voltage applications. |
  | Insulation Thickness (mm) |
• For 0.6/1kV cables: Varies from 1.0 to 1.4 depending on the conductor size.
• For 6/10kV cables: Ranges from 3.4 to 4.5 based on the cross - sectional area of the conductor. |
  | Rated Voltage (kV) | 0.6/1, 6/10, 8.7/15, 12/20, 18/30, 21/35 |
  | Test Voltage |
• Power - frequency withstand voltage: Conducted for a specified time (e.g., 5 minutes) at a voltage level higher than the rated voltage (e.g., 2.5 times the rated voltage for 10kV cables).
• Impulse withstand voltage: Tested with standard impulse waveforms to ensure insulation integrity under transient over - voltages. |
  | Temperature Rating |
• Long - term operating temperature: Up to 90°C for XLPE insulation and 70°C for PE insulation.
• Short - circuit temperature: 250°C for XLPE and 160°C for PE (for a short - duration short - circuit event). |
  | Mechanical Properties |
• Tensile strength: Varies depending on the conductor material. For example, copper conductors have a relatively high tensile strength (e.g., ≥ 205 MPa), while aluminum alloy conductors typically have a tensile strength of ≥ 150 MPa.
• Elongation at break: Copper conductors usually have an elongation at break of ≥ 30%, and aluminum alloy conductors have ≥ 15%. |
  | Bending Radius | Generally, the minimum bending radius is 15 times the outer diameter of the cable for installation purposes to prevent damage to the insulation and conductor. |
  | Environmental Resistance |
• Temperature range: Can operate in a temperature range of - 40°C to + 70°C.
• UV resistance: The insulation materials are formulated to resist degradation from ultraviolet radiation, suitable for long - term outdoor use.
• Moisture resistance: The insulation provides good protection against moisture ingress to maintain electrical performance. |
  | Standards Compliance | Complies with international standards such as IEC 60502, as well as national standards like GB/T 12527 in China and ASTM standards in the United States. |