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:
May. 27, 1997
Filed:
Oct. 13, 1995
Applicant:
Inventors:
Jurgen Boy, Berlin, DE;
Gerhard Lange, Berlin, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 17 ; 361120 ;
Abstract
To adapt a three-electrode arrester having copper electrodes to high switching capacities (200 Amp a.c. current per discharge gap simultaneously for 11 cycles at 60 Hz), the following measures are provided: The cylindrical end electrodes have a volume of at least 60 mm.sup.3, given a ratio of length (L.sub.2) to diameter (D.sub.2) of less than 2.5; the middle electrode has the shape of a hollow cylinder with end regions of a reduced wall thickness; the middle electrode and the hollow cylindrical insulators are soldered to one another at the front ends.