Inner Conductor

• Material: Copper-Clad Steel Wire (min. 21% copper coverage)

• Diameter: 1.63 mm ± 0.01

• Elongation at Break: ≥ 25%

• Tensile Strength: ≥ 150 N/mm²

• Adherence to Dielectric: ≥ 67 N

2. Dielectric

• Material: Gas Injected Foamed Polyethylene (PE)

• Diameter: 7.11 mm

• Dielectric Constant of Base PE: — (not specified, usually ~2.25)

• Dielectric Strength of PE: 18 kV/mm

• Shrinkage: ≤ 4% after 4h at 115°C

• PE Oxidative Induction Time:

  • ≥ 30 min (ASTM D4565)

  • ≥ 70% retention after 14 days at 90°C

3. Screen (1) – Al/PET Tape

• Material: Aluminium/Polyester/Bonding Layer Tape

• Diameter Over Dielectric: 7.3 mm ± 0.13

• Bonded to Dielectric (Ovality ≤ 0.3)

• Tape Thickness:

  • Aluminium: 0.009 mm

  • PET: 0.012 mm

  • Bonding Layer: 0.025 mm

• Overlap: ≥ 18%

4. Screen (2) – Aluminium Alloy Braid

• Material: Aluminium Alloy Braid

• Diameter Over Tape: 7.9 mm ± 0.15

• Braid Construction: 24 × 6 × (0.16 ± 0.005 mm wires)

• Coverage: ≥ 95%

• Elongation at Break (each wire): ≥ 6%

• Tensile Strength (each wire): ≥ 180 N/mm²

5. Outer Sheath (Jacket)

• Material: PVC (Low-Smoke, No Bad Odors)

• Diameter: 10.03 mm ± 0.1

• Color: Black (RAL 9005)

• Thickness: ≥ 0.9 mm

• Jacket Excentricity: ≤ 43%

• Tensile Strength:

  • ≥ 13.8 MPa (UL 2556)

  • After 168h at 100°C: ≥ 75% retention (UL 2556)

• Elongation at Break:

  • ≥ 250% (UL 2556 & ASTM D573)

  • After 168h at 100°C: ≥ 50% (UL 2556 & ASTM D573)

• Spark Test: ≥ 2.5 kVrms

• Jacket Shrinkage (ANSI/SCTE 88/2003): ≤ 10 mm per 150 mm sample