Method for producing an electrical conductor with an insulation and at least one point to be kept free of the insulation

US8293320B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ivanka Atanasova-Hoehlein · Ergolding, DE
• Ulrich Duellberg · Hirschberg, DE
• Peter Heinzig · Wendelstein, DE
• Bogdan Kokotowski · Oberasbach, DE
• Konrad Unterlugauer · Büren, DE

Key dates

• Filing date: Dec 7, 2011
• Grant date: Oct 23, 2012
• Expiry date: Dec 7, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01B3/40
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The conductor, including the points being kept free insulation, is initially surrounded by a liquid, electrically non-conducting bonding agent which forms the insulation after solidifying. The conductor can be a transposed conductor in which the individual conductors thereof are electrically isolated relative to each other and are interconnected by the bonding agent. Using a liquid stripping agent based on a polyvinyl alcohol or a long-chain hydrocarbon mixture and a polysaccharide filler on the point of the conductor being kept free of the insulation locally prevents the bonding agent from bonding to the conductor or the individual conductors of the transposed conductor from being interconnected by means of the unsolidified mixture. Once the entire bonding agent is hard and thus the bonding agent/stripping agent mixture has solidified, the bonding agent/stripping agent mixture can easily be removed in a mechanical manner from the treated points of the conductor.