Insulation-coated electric conductor
AssigneeFurukawa Electric Co., Ltd.
InventorMasakazu Mesaki
Life of this patent
Estimating the term…
Abstract
A multilayer insulation-coated electric conductor for a coil constituting a circuit by forming a welded portion in the coil, wherein at least one layer of the multilayer insulation-coating layers of the coated metal conductor is composed of at least one resin selected from the group consisting of a polyimide resin, a polyesterimide resin, and an H-class polyester resin.
Claims18
A multilayer insulation-coated electric conductor to be formed into partial shapes of a coil that are to be joined by welding, comprising:
- a conductor made of oxygen free copper or low-oxygen copper with an oxygen content of 30 ppm or lower,
- an uppermost insulation layer comprising a polyamideimide resin;
- and
- an under insulation layer adjacent to the uppermost layer, wherein the under insulation layer consists of an H-class polyester resin;
- wherein the multilayer insulation-coated electric conductor shows welding temperature resistance at a portion close to a welded portion receiving heat increased to about 1,100° C. or higher during the welding process.
A multilayer insulation-coated electric conductor to be formed into partial shapes of a coil that are to be joined by welding, comprising:
- a conductor made of oxygen free copper or low-oxygen copper with an oxygen content of 30 ppm or lower,
- an uppermost insulation layer consisting of comprising a polyamideimide resin;
- and
- an under insulation layer adjacent to the uppermost layer, wherein the under insulation layer consists of a polyesterimide resin;
- wherein the multilayer insulation-coated electric conductor shows welding temperature resistance at a portion close to a welded portion receiving heat increased to about 1,100° C. or higher during the welding process.
Dependencies are inferred from the claim text.