System and apparatus for predicting failure in insulated systems

US6300767A · kind A · utility

Assignee

• General Electric Company · US

Inventors

• Gerald Burt Kliman · Niskayuna, US
• John Raymond Krahn · Schenectady, US
• Howard L. Lester · Alplaus, US
• John Stanley Glaser · Niskayuna, US
• William James Premerlani · Scotia, US

Key dates

• Filing date: Nov 30, 1998
• Grant date: Oct 9, 2001
• Expiry date: Nov 30, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/14
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A radio frequency (RF) or other form of detector detects discharges of an insulated system which can occur when electrical insulation becomes wet, for subsequent analysis and decision processes. Additionally, for RF detection, a frequency selector can be used to select a "quiet" region of the discharge spectrum before demodulation and further analysis and decision. Finally, redundant sets of such filters avoid the need to continuously reconfigure the detection system.