The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2003
Filed:
Oct. 29, 2002
ABB Research Ltd, Zurich, CH;
Abstract
The invention relates to a post insulator ( ) whose surface ( ) is geometrically configured, in at least one area ( ) between an inner conductor ( ) and encapsulation ( ) for a gas-insulated switchgear assembly ( ) such that surface discharge paths ( ) are provided between the inner conductor ( ) and the encapsulation ( ) and have a subsection in the opposite direction to the bridging direction ( ). In consequence, surface discharges ( ) can be diverted in the opposite direction to an original propagation direction ( ), and come to rest by self-blocking. Exemplary embodiments relate to: an indentation ( ) which is concave and is open toward the inner conductor ( ) and/or toward the encapsulation ( ) and is formed between a cup shaped barrier ( ) and the base body ( ) of the post insulator ( ); diversion of surface discharges ( ) through up to 180° for efficient self blocking; and adhesive bonding ( ) of the barrier ( ) on a conventional post insulator ( ). The invention also relates to a gas-insulated switchgear assembly ( ) or to a switchgear assembly module having such a post insulator ( ) or partition insulator ( ).