Paper Covered Winding Wire

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The biggest advantage of paper covered winding wire lies in its extremely high insulation reliability and environmental adaptability. The layered winding structure of high-density insulating paper gives it excellent dielectric strength, which can stably withstand high voltage impacts that ordinary enameled wires cannot cope with, and the insulation breakdown strength can reach a very high level under long-term operation. Different from the organic paint film, the paper insulation layer has excellent thermal aging resistance, and the H-grade NOMEX paper wrapped wire can work stably in a high temperature environment of 200°C for a long time, and the insulation performance will not degrade significantly after years of operation.

Its mechanical properties are also outstanding. The flexible and tough paper layer can effectively buffer the mechanical extrusion, friction and winding tension during the coil winding process, avoiding the hidden insulation damage that is easy to occur in enameled wires during processing. For special alloy conductors such as copper-silver alloy, the paper insulation can also give full play to the high conductivity and high creep resistance of the conductor itself, so that the winding can still maintain a stable structure under long-term high temperature and heavy load conditions, and will not deform or loose. In addition, the paper insulation has good compatibility with transformer oil, and after being immersed in oil, its overall insulation performance and heat dissipation efficiency are further improved, which is a unique advantage that other insulating materials cannot match.