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US 8,525,032 B2Granted
Device for decreased risk of dielectric breakdown in high voltage apparatuses
AssigneeABB Research Ltd.
InventorsAndrew Maxwell, Thorsten Schütte
Life of this patent
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Abstract
A device including a corona shield, and at least one support element for connecting the corona shield to a high voltage apparatus. The at least one support element includes a semiconducting polymer, which, when in operation, acts as a resistance between the corona shield and the high voltage apparatus. Furthermore the support element is arranged to fix the corona shield to the high voltage apparatus.
Claims11
A device comprising:
- a corona shield being arranged to surround a high voltage conductor of a high voltage apparatus;
- and
- at least one support element for connecting said corona shield to the high voltage conductor of the high voltage apparatus, characterised in that
- said at least one support element comprises a semiconducting polymer, which, when said device is in operation, acts as a resistance between said corona shield and said high voltage apparatus, and
- said support element is arranged to fix said corona shield to said high voltage apparatus;
- wherein at least one of said at least one support element comprises a core of said semiconducting polymer and an outer layer made of an outer material which is more durable when exposed to air than said semiconducting polymer.
3 more elements
A method for manufacturing a device characterised by the steps of:
- providing at least one support element comprising a semiconducting polymer, which, when said device is in operation, acts as a resistance between a corona shield and a high voltage conductor of a high voltage apparatus;
- providing a core and an outer layer for each of said at least one support element, said outer layer being made of an outer material which is more durable when exposed to air than said semiconducting polymer;
- and
- mounting said at least one support element between a corona shield and a high voltage apparatus such that the corona shield surrounds the high voltage conductor.
1 more element
Dependencies are inferred from the claim text.