UL3663 High Voltage Silicone Insulated Specialty Lead Wire – BYC Cables

Product Overview

Feature Specification
Standard UL 3663
Rated Voltage 7200V Alternating Current (AC) (Extreme High Voltage Rated)
Temperature Range -60°C to +180°C (-76°F to +356°F)
Conductor Type Tinned Copper or Nickel-plated Copper
Insulation Material Silicone Rubber (Extra Thick Heavy-Duty Wall)
Braiding (Optional) Fiberglass Braiding
Available Colors White, Blue, Red, Black, Brown, Yellow, Green, Transparent, Yellow/Green
Applications Internal wiring for high-voltage power supplies, heavy industrial machinery, and pulse energy systems.

Technical Parameter Table

American Wire Gauge (AWG) Conductor Construction (Number / Diameter in mm) Conductor Diameter (mm) Insulation Thickness (mm) Finished Outside Diameter (mm) Maximum Conductor Resistance at 20°C (68°F) (Ohm/km)
16 7 / 0.49 1.5 2.29 6.1 14.6
15 33 / 0.254 1.7 2.29 6.3 11.3
14 41 / 0.254 1.9 2.29 6.5 8.96
13 52 / 0.254 2.1 2.29 6.8 7.1
12 65 / 0.254 2.4 2.29 7.0 5.64
11 83 / 0.254 2.7 2.29 7.3 4.48
10 35 / 0.45 2.6 2.29 7.7 3.55
9 53 / 0.40 3.4 2.29 8.1 2.81
8 70 / 0.40 4.3 2.29 9.0 2.3
7 84 / 0.40 4.8 2.29 9.5 1.79
6 105 / 0.40 5.3 2.29 10.0 1.42
5 133 / 0.40 6.0 2.29 10.7 1.12
4 168 / 0.40 6.8 2.29 11.5 0.89
3 213 / 0.40 6.6 2.67 13.1 0.707
2 266 / 0.40 8.5 2.67 14.0 0.56
1 217 / 0.50 9.5 2.67 15.2 0.449
1/0 276 / 0.50 10.9 2.67 17.0 0.355
2/0 342 / 0.50 12.2 2.67 18.0 0.282
3/0 437 / 0.50 13.7 2.67 19.5 0.223
4/0 551 / 0.50 15.4 2.67 21.0 0.177

Professional Performance Features

  • Extreme Dielectric Integrity: Engineered with a specialized extra-thick silicone wall to withstand intense voltage stress up to 7200V Alternating Current. This prevents insulation breakdown and ensures safety in extreme high-voltage environments.
  • Exceptional Thermal Stability: This wire maintains its physical flexibility and electrical properties across a wide thermal spectrum, ranging from cryogenic sub-zero environments at -60°C (-76°F) to constant high-heat industrial zones up to +180°C (+356°F).
  • Advanced Conductor Protection: By utilizing Tinned Copper or Nickel-plated Copper, the conductor remains highly resistant to environmental oxidation and chemical corrosion, providing long-term reliability in high-humidity or high-temperature power systems.
  • Superior Pliability: Despite the heavy-duty insulation required for 7.2KV ratings, the flexible silicone material and high-strand count stranding allow for a tight bend radius, facilitating easier installation in compact heavy industrial enclosures.
  • Environmental & Chemical Resistance: Fully resistant to ozone, UV radiation, moisture, and aging. The modified silicone jacket also provides excellent protection against various industrial fluids and ensures a long operational life under harsh conditions.

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