JEFFRY P MACKEVICH
Engineers in Millbrae, CA
License number
Pennsylvania PE029666E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Millbrae, CA 94030
Pennsylvania
Pennsylvania
Personal information
See more information about JEFFRY P MACKEVICH at radaris.comName
Address
Phone
45 La Solano, Millbrae, CA 94030
Professional information
Surge Arrester With Overvoltage Sensitive Grounding Switch
US Patent:
5583734, Dec 10, 1996
Filed:
Nov 10, 1994
Appl. No.:
8/336951
Inventors:
Corey J. McMills - Los Altos CA
Keith N. Melton - Cupertino CA
Jeffry P. Mackevich - Millbrae CA
Anthony C. Evans - Woodside CA
John S. Mattis - Sunnyvale CA
Keith N. Melton - Cupertino CA
Jeffry P. Mackevich - Millbrae CA
Anthony C. Evans - Woodside CA
John S. Mattis - Sunnyvale CA
Assignee:
Raychem Corporation - Menlo Park CA
International Classification:
H02H 100
US Classification:
361124
Abstract:
A surge arrester for protecting power distribution equipment from overvoltages has a varistor as the active surge-arresting element. In the event of a persistent overvoltage, an amorphous conductor electrically in series with the varistor heats up to or above a critical temperature at which its tensile strength substantially decreases. The amorphous metal conductor breaks, triggering a series of events including the closing of a switch creating a permanent short to ground, operating the network overcurrent protection to de-energize the arrester and associated protected equipment, and protecting the electrical network equipment from insulation damage and/or failure because of a sustained or permanent power frequency overvoltage condition.