Silica Glass Insulated Nickel Clad Copper Conductor Heat Resistant Cable – Ninomiya TN430

Features

  • Smaller in diameter and lighter with the same allowable current, because the volume resistivity is 1/4 of nickel conductor.
  • Easy to process and wire, because it is softer than nickel conductor.
  • The thickness is 20-30 times of normal nickel-coated wire (1-5 μm). (Nickel vs. copper area ratio: approx. 28:72.)
  • The conductivity varies depending on changes in temperature. However it retains 60% of conductivity after used continuously under a temperature of 400℃ for three years.
  • The tensile is twice as strong as copper wire under a temperature of 400℃.
  • Using nickel as the surface material, far more resistant to corrosion than copper wire.
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Silica-glass insulated nickel-clad-copper conductor heat-resistant wire (TN430) is made of nickel-clad-copper wires which are flexible and highly resistant to heat and corrosion, and wrapped with glass-mica-polyimide tape and covered with silica-glass fiber. Maximum operation temperature of this series is 400℃.

Construction

  • Conductor
    Several nickel-clad-copper wires (NPC) are stranded to make a conductor. Construction of the conductor is shown in below table. NPC has lower conductor resistance and more flexibility than nickel wire.
  • Insulator
    Conductor is double wrapped with glass-mica-polyimide tape, braided with silica-glass fiber, and baked with polyimide coating on the surface to make an insulator.
  • Color
    The standard is two black-spiraled stripes on the dark brown ground of the polyimide coating. The ground color may vary (darker) depending on the baking temperature.

Applications

Being deasbestos wires, used as lead wires of electric heaters or wirings in high-temperature equipments where, especially high resistance to heat is required.

Specification

Parts No. Conductor Taping thickness Braind shielding thickness Finished OD Conductor resistance Insulation resistance Test voltage (AC 1 min.)
Sectional area mom. Construction No. of wires/Dia. of elemental wire OD
mm2 No. of wires/mm mm mm mm mm Ω/Km MΩ・Km V
8451TN00N 0.75 30/0.18 1.1 0.25 0.6 2.8 29.68 10 1,500
8551TN00N 1.25 50/0.18 1.5 0.25 0.7 3.4 27.8 10 1,500
8651TN00N 2 37/0.26 1.8 0.25 0.7 3.7 11.53 10 1,500
5651TN00N 3.5 66/0.26 2.4 0.25 0.7 4.5 6.335 10 1,500
8851TN00N 5.5 35/0.45 3.1 0.25 0.7 5.2 4.07 10 1,500
8951TN00N 8 50/0.45 3.7 0.25 0.8 5.8 2.846 10 1,500
9051TN00N 14 88/0.45 4.9 0.25 0.8 7 1.622 10 1,500
9151TN00N 22 7/20/0.45 7 0.25 0.8 9.1 1.017 10 1,500

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Ninomiya TN430 – Silica Glass Insulated Nickel Clad Copper Conductor Heat Resistant Cable-DpstarGroup

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