Electrical contact element for medium or high voltage electrical equipment, and corresponding, method and equipment
AssigneeAreva T&D SA
InventorsJean-Luc Bessede, Pierre Giannini, Oana Visata
Life of this patent
Estimating the term…
Abstract
An electrical contact member, suitable for electrically interconnecting two conductive members in series, which members can move relative to each other and are part of an electrical apparatus. The electrical contact includes a strength-imparting base layer made of an electrically conductive material, and a coating layer formed from metallic silver and configured to come into contact with the two electrically conductive members. The coating layer has a micro-structure formed by pure silver crystals, with a presence of nodules made of silver and of an additional metallic material formed by at least one additional metal that is different from silver.
Claims27
An electrical contact member suitable for electrically interconnecting two conductive members the two conductive members movable relative to each other, and are part of medium-voltage or high-voltage electrical apparatus, the contact member comprising:
- a strength-imparting base layer made of an electrically conductive material;
- and
- a coating layer formed from metallic silver and configured to come into contact with the two conductive members, the coating layer being present over at least a portion of an outer surface of the base layer,
- wherein the coating layer has a micro-structure formed by pure silver crystals, with a presence of nodules made of silver and of an additional metallic material formed by at least one additional metal that is different from silver, the additional material being present in the coating layer in a proportion of less than 1% by weight, or less than 0.5% by weight, and or less than 0.1% by weight.
Dependencies are inferred from the claim text.