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NEW DEVELOPMENTS IN THE PRACTICAL APPLICATION OF LOW-ENERGY HIGH-VOLTAGE WIRE DIAGNOSTIC TECHNIQUES
BibTeX
@MISC{Eisenhart_newdevelopments,
author = {Steve Eisenhart and Michael Ballas},
title = {NEW DEVELOPMENTS IN THE PRACTICAL APPLICATION OF LOW-ENERGY HIGH-VOLTAGE WIRE DIAGNOSTIC TECHNIQUES},
year = {}
}
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Abstract
New developments in the practical application of Low-Energy High-Voltage (LEHV) techniques for detecting and locating potential defects in Electrical Wiring Interconnect Systems (EWIS) are presented and discussed. The two LEHV techniques presented are: 1. Fast Pulse Technique 1, which initiates a high voltage, narrow width pulse down a wire. Comparison of the return signature with and without an arc over occurring allows determination of the distance to defect. 2. Slow Charge Breakdown Technique 2, which slowly charges the distributed EWIS parasitic capacitance to a fixed voltage. If an arc over occurs, this distributed capacitance discharges, and analysis of the return signature allows determination of the distance to defect. I. Background Astronics Advanced Electronic Systems Inc. 3 has core business focus in advanced power control and electrical distribution in aircraft systems. The company has a long history in developing and manufacturing specialized test equipment for aircraft. Interest in self-diagnostic systems and other smart electronics led to the development of the Slow Charge Breakdown Technique. This technique showed early promise in detecting and locating defects in EWIS. The Federal Aviation Administration (FAA) funded Astronics (then General Dynamics AES) to develop and validate a portable device that implements this technique [1]. Sandia National Laboratories received funding from the Department of Energy, the U.S. Navy, and the FAA in the development of a LEHV technique they call Pulsed Arrested Spark Discharge (PASD) [2], which in this report is referred to as the Fast Pulse Technique. This technique also showed early promise in detecting and locating defects in EWIS. Astronics is now under contract with the FAA to develop a portable test set that embodies these two LEHV techniques for use as an aircraft wiring diagnostics tool. 1 Fast Pulse technique is also called Pulsed Arrested Spark Discharge or PASD by developers at Sandia National
Keyphrases
fast pulse technique new development practical application low-energy high-voltage wire diagnostic technique lehv technique return signature arrested spark discharge early promise slow charge breakdown technique specialized test equipment fixed voltage smart electronics u.s. navy federal aviation administration distributed ewis parasitic capacitance advanced power control sandia national aircraft wiring diagnostics tool practical application self-diagnostic system electrical wiring interconnect system general dynamic aes narrow width high voltage aircraft system capacitance discharge astronics advanced electronic system inc new development potential defect low-energy high-voltage allows determination long history core business focus portable test set sandia national laboratory electrical distribution portable device
