Partial discharge resistant electrical cable and method

An electrical cable, comprising:

• a conductor comprising a plurality of strands defining interstices therebetween;
• a first insulating layer comprising a polymer that is disposed on the conductor such that the first insulating layer substantially fills the interstices, the polymer of the first insulating layer comprising a low molecular weight polymer;
• an adhesion layer comprising a polymer that is disposed on the first insulating layer;
• and
• a second insulating layer comprising a polymer that is disposed on the adhesion layer, the polymer of the second insulating layer comprising a high molecular weight polymer;
• wherein the adhesion layer is miscible with the polymer of the first insulating layer and the polymer of the second insulating layer.

An electrical cable, comprising:

• a conductor comprising a plurality of strands defining interstices therebetween;
• a first insulating layer comprising a polymer that is disposed on the conductor such that the first insulating layer substantially fills the interstices, the polymer of the first insulating layer comprising a low molecular weight polymer;
• a second insulating layer comprising a polymer that is disposed on the first insulating layer, the polymer of the second insulating layer comprising a high molecular weight polymer;
• and
• a lubricating layer comprising a low molecular weight polymer that is disposed on the second insulating layer.

An electrical cable, comprising:

• a conductor comprising a plurality of strands defining interstices therebetween;
• a first insulating layer comprising a polymer that is disposed on the conductor such that the first insulating layer substantially fills the interstices, the polymer of the first insulating layer comprising a low molecular weight polymer;
• an adhesion layer comprising a polymer that is disposed on the first insulating layer;
• a second insulating layer comprising a polymer that is disposed on the adhesion layer, the polymer of the second insulating layer comprising a high molecular weight polymer;
• and
• a lubricating layer comprising a low molecular weight polymer that is disposed on the second insulating layer;
• wherein the adhesion layer is miscible with the polymer of the first insulating layer and the polymer of the second insulating layer.

A method for producing an electrical cable, comprising:

• providing a conductor comprising a plurality of strands defining interstices therebetween;
• applying a first insulating layer to the conductor such that the interstices are substantially filled by the first insulating layer, the first insulating layer comprising a low molecular weight polymer;
• applying an adhesion layer to the first insulating layer;
• and
• applying a second insulating layer to the adhesion layer, the second insulating layer comprising a high molecular weight polymer.