METHOD AND APPARATUS FOR FORMING CORONA SHIELDING

摘要

A method and device for forming corona shielding on a winding bar for high-voltage machines has end corona shielding in a first section and outer corona shielding in a second section that adjoins the first section. The method includes providing a first composition, including a carrier material and a first filler therein and a first electrical resistance; providing a second composition, including the same carrier material and a second filler therein and a second electrical resistance, wherein the first and second fillers contain an identical dopable semiconductor material, doping of which determines electrical resistance of the first and second fillers, and wherein the second resistance differs from the first resistance; applying the first composition in the first section to form the end corona shielding; and applying the second composition in the second section to form the outer corona shielding.

主权项

1. A method for forming corona shielding on a winding bar for high-voltage machines comprising end corona shielding in a first section and outer corona shielding in a second section, which adjoins the first section, said method comprising:
providing a first composition, which comprises a carrier material and a first filler contained therein and having a first electrical resistance; providing a second composition, which comprises the same carrier material and a second filler contained therein and having a second electrical resistance, wherein the first and second fillers contain an identical dopable semiconductor material, whose doping determines the electrical resistance of the first and second fillers, and wherein the second resistance differs from the first resistance; applying the first composition in the first section to form the end corona shielding; and applying the second composition in the second section to form the outer corona shielding.