Line Element Having Efficiently Producible Insulation
Various embodiments of the teachings herein include a conductor element of an electrical rotating machine. An example includes: a conductive core having a voltage rating greater than 700 volts; and a powder coating insulating the conductive core. The powder coating comprises two uncrosslinked plastics components comprising a solid at room temperature under standard conditions. A first uncrosslinked polyimide-containing plastics component and a second uncrosslinked epoxy-containing plastics component are present in the powder coating in a mixing ratio between 99:1 and 1:99.
1 . A conductor element of an electrical rotating machine, the conductor element comprising:
a conductive core having a voltage rating greater than 700 volts; and
a powder coating insulating the conductive core;
wherein the powder coating comprises two uncrosslinked plastics components comprising a solid at room temperature under standard conditions;
wherein a first uncrosslinked polyimide-containing plastics component and a second uncrosslinked epoxy-containing plastics component which are present in the powder coating in a mixing ratio ween 99:1 and 1:99.
2 . The conductor element as claimed in claim 1 , wherein the first uncrosslinked polyimide-containing component comprises a bismaleic polyimide.
3 . The conductor element as claimed in claim 1 , wherein the first uncrosslinked polyimide-containing plastics component comprises: a mixture, a copolymer, and/or a blend of two or more polyimide-containing plastics components.
4 . The conductor element as claimed in claim 1 , wherein the second uncrosslinked epoxy-containing plastics component comprises one or more solid epoxy resins.
5 . The conductor element as claimed in claim 1 , wherein the second uncrosslinked epoxy-containing plastics component comprises a mixture, a copolymer and/or a blend comprising two or more epoxy-containing plastics components.
6 . The conductor element as claimed in claim 1 , wherein the two uncrosslinked plastics components in the powder coating formulation each comprise a mixture, a blend, or a copolymer.
7 . The conductor element as claimed in claim 1 , wherein the powder coating comprises fillers.
8 . The conductor element as claimed in claim 1 , wherein the powder coating comprises additives.
9 . A process for producing an insulation of a conductor element, the process comprising:
coating a conductive core with a thermosetting powder coating formulation;
wherein the powder coating formulation includes two uncrosslinked plastics components;
wherein a first uncrosslinked polyimide-containing plastics component and a second uncrosslinked epoxy-containing plastics component are each present as a solid at room temperature under standard conditions;
curing the powder coating on the conductive core; and
coating the coated conductive core with the powder coating formulation one or more additional times.
10 . The process as claimed in claim 9 performed in automated fashion.
11 . The process as claimed in claim 9 , wherein the conductor element comprises a winding head.
12 . The process as claimed in claim 9 , wherein the conductive core comprises a copper flat wire.
13 . An electrical rotating machine having a rated voltage greater than 700 volts, the machine comprising:
a plurality of conductor elements;
insulation isolating the conductor elements from one another at least in part;
a first insulation for an active part of the machine; and
a second insulation for a winding head;
wherein the material of the first insulation is dissimilar from the material of the second insulation.
14 . The electrical rotating machine as claimed in claim 13 , wherein the material of the first insulation comprises siloxane and the material of the second insulation comprises no siloxane.
15 . The electrical rotating machine as claimed in claim 13 , wherein the second insulation comprises no mica tape.
16 . (canceled)