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Kynar Wire Red (5M) £3.85

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Kynar wire 30 AWG (Red 5M length)

Polyvinylidene (PVDF) or KYNAR is a thermoplastic fluoropolymer that is often used as insulation jacketing for wire and cable that provides a variety of benefits. It can be used across multiple industries.

KYNAR wire insulation, when used as a jacketing material for cables, is ideally suited for applications that require flexibility, strength, and low density. It boasts abilities that allow it to bend with durability throughout heavy use.

Specifically, it is extremely beneficial in applications that require chemical resistance, as it is capable of withstanding intense substances such as chlorine and hydrogen gases. KYNAR-insulated cable and wire also provides resistance to high temperatures, flames, and low smoke generation.

Tech Tin Files: Skin Effect

  • Distribution of current flow in a cylindrical conductor, shown in cross section. For alternating current, most (63%) of the electric current flows between the surface and the skin depth, which depends on the frequency of the current and the electrical and magnetic properties of the conductor. The 3-wire bundles in this power transmission installation act as a single conductor. A single wire using the same amount of metal per kilometer would have higher losses due to the skin effect.
  • Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor. The electric current flows mainly at the "skin" of the conductor, between the outer surface and a level called the skin depth. The skin effect causes the effective resistance of the conductor to increase at higher frequencies where the skin depth is smaller, thus reducing the effective cross-section of the conductor.
  • The skin effect is due to opposing eddy currents induced by the changing magnetic field resulting from the alternating current. At 60 Hz in copper, the skin depth is about 8.5 mm. At high frequencies the skin depth becomes much smaller. Increased AC resistance due to the skin effect can be mitigated by using specially woven litz wire. Because the interior of a large conductor carries so little of the current, tubular conductors such as pipe can be used to save weight and cost.