What do the results of arc track resistance testing mean?

April 9, 2015 Michael Traskos

Wire manufacturers must ensure that their products can withstand a wide variety of tests. One important test for aerospace professionals is called the “arc track resistance”test. This test is significant because an unconstrained electrical arc can impact the safety and reliability of the Electrical Wiring Interconnection System (EWIS). In this article we will define the […] Read more

Aircraft EWIS failure trends

April 1, 2015 Michael Traskos

The process for identifying an EWIS problem on an aircraft often follows these steps: At some point during aircraft operation a system malfunctions and the pilot reports the malfunction. Maintenance starts by replacing the system component. Depending on schedule and criticality, the maintenance action is scheduled. Often, the first action to be taken is the […] Read more

Aircraft wire inspection? Time tested guidelines

March 18, 2015 Carina Cannon

Performing routine aircraft wire systems visual inspections is a critical aspect of maintaining aircraft airworthiness and extending the component lifecycle. A visual inspection is the first step in assessing the condition of a component or determining what future steps need to be taken. This article discusses recommended techniques based on MIL-HDBK-522, which provides EWIS inspection […] Read more

Perspectives on arc fault protection

February 27, 2015 Michael Traskos

Lectromec has published several articles and a white paper on our web site that discuss the hazards of electrical arcing and how they can be mitigated. In order to broaden the discussion, this article will try to give our readers some insight on systems that offer solid state protection, generally called arc fault circuit protection […] Read more

Partial analysis of 2014 aircraft EWIS failure rates

November 24, 2014 Michael Traskos

Periodically, Lectromec reviews the state of the industry and EWIS failure rates. In this article, Lectromec reviews the January – November data in the FAA’s service difficulty report (SDR) database as of November 16, 2014 for incidents reported to have occurred during 2014. Read more

WIDAS

WIDAS 2.0 Summary of the Lectromec Wire Insulation Degradation Analysis System (WIDAS): It assesses the degradation of polyimide (trade name Kapton®) insulated wires and projects remaining service life (wire insulation degradation assessments of other insulations are also available). It is an assessment technique that identifies the impact of maintenance and polymer degradation on the remaining […] Read more

Arc Damage Analysis

Summary of Electrical Arc Damage Analysis Electrical wire failure can impact aircraft airworthiness. Lectromec can help you define your separation requirements with lab data matching your system configuration Data generated can be used for EWIS certification to requirements such as 25.1707 Lectromec has the knowledge, equipment, and capabilities to performed electrical arc damage analysis of […] Read more

Comparative Analysis

Steps for Comparative Analysis ×Close Steps for Comparative Analysis Close Wire selection for a particular application can be a time intensive process. Selection of the right wire for the particular application to maintain device reliability and prevent the potential for catastrophic failure (in case of signal quality degradation or electrical arcing for power wires) can be […] Read more

Arc Track Resistance Test Equipment

Arc Track Resistance Cabinet ×Close Arc Track Resistance Test Equipment Close In any system that requires a significant degree of reliability, all possible failure modes should be considered. As electrical systems and devices become more complicated with greater density of electrical wires and components, electrical arcing poses an increasing threat to system reliability. To address […] Read more

Arc Damage Modeling Tool

Summary of Arc Damage Modeling Tool Based on over 3,000 arc damage assessment tests, the Arc Damage Modeling Tool (ADMT) is the state-of-the-art for wire failure damage assessment The ADMT is capable of predicting the damage to both direct electrical arcing (direct contact) and indirect arcing (damage from the arc plume) Data generated can be […] Read more

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