At low frequencies, electric current flows almost uniformly through a conductor. However, as frequency increases, current naturally moves toward the outer surface of the conductor.

This phenomenon is known as the skin effect.

When multiple conductors are placed close together, their magnetic fields also influence one another, causing the current distribution to become even less uniform. This is called the proximity effect.

Both effects increase AC resistance, generate additional heat, and reduce overall system efficiency.

SST-Litz Wire solves these problems by dividing one large conductor into hundreds or even thousands of insulated fine strands. Since each strand continuously changes position within the bundle, every strand experiences nearly identical magnetic conditions, allowing current to distribute evenly throughout the conductor.

The result is significantly lower AC losses compared with conventional solid or standard stranded conductors.