How to Access Featured Paper of the Month!

Our Featured Technical Paper is "In-Service Testing of Sf6 Filled Dead Tank Circuit Breakers Using the Acoustic Emission Diagnostic Technique" 

Paper Abstract:  The Acoustic Emission (AE) diagnostic technique is a non-intrusive in-service test used for monitoring acoustic signals produced by partial discharge and loose components. AE is effective in detecting faults in SF6 gas insulated insulation systems, such as Gas Insulated Substations (GIS) systems and SF6 filled dead tank breakers. AE has the ability to identify and locate the presence of Partial Discharge (PD), particles, and mechanical defects within the equipment. AE testing is non-intrusive, and can either be performed with the equipment in-service or in conjunction with an external source: a series resonance or an AC Hi-Pot. The AE diagnostic technique captures and processes AE signals primarily in the ultrasonic domain. Characteristics are extracted from the measured AE signals. This information is used to determine the nature of the AE source, which can be matched to various apparatus faults.

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