Contact Resistance

A potential lossy area in electrical circuits (both for power and signal) is at the contact points. Poor mating, contaminated surfaces, poor crimping, and/or damaged plating can all add resistance to the circuit. A means of assessing this impact is by measuring the contact resistance. Contact resistance refers to the electrical resistance that can be […] Read more

Wrap Back Test

The wrap back examines a wire/cable’s insulation susceptibility to breach when tightly wrapped around itself and exposed to elevated temperatures. This test is usually required in the individual wire specifications as part of the insulation integrity assessment. After the elevated temperature exposure, the specimen is visually examined for any insulation cracks (or delamination in the […] Read more

Surface Resistance

The purpose of this test is to measure the resistance of the outer surface of the insulation in a high humidity environment. This is to ensure that the resistance along the outer surface is large enough to prevent leakage current between connections. The following parameters can be adjusted for the test: Conditioning duration Applied voltage […] Read more

Latest news on aircraft wire from the SAE’s Spring 2016 Wire and Cable Committee Meeting

May 5, 2016 Michael Traskos

he Spring 2016 SAE AE-8A and 8D wire cable standard and wiring installation guidance committee meetings were held last week in Denver, Colorado. The continuing process of wire improvement, both in terms of product and installation, was held over a three-day period covering dozens of topics critical to improving the reliability of EWIS. The following are some of the updates from this meeting. Read more

Forced Hydrolysis

The forced hydrolysis test places the wire/cable specimen in a high-temperature water bath for an extended duration to evaluate the durability of a wire insulation in high-humidity conditions. Depending on the particular wire specification needs, the test may be required to run for thousands of hours. After the prolonged exposure, the sample is then examined […] Read more

What do advanced arc fault circuit protection devices protect?

March 16, 2016 Michael Traskos

The use of circuit protection devices is a fundamental part of circuit design; it is difficult to think of systems without them. For the aircraft industry, thermal circuit protection devices have been the primary circuit protection components for decades, and there is good reason for this: flight crew and maintenance personnel are familiar with their operation, and they are reliable and relatively low cost. Read more

The benefits of aircraft electrical system analyzers with Chris Teal

January 5, 2016 Lectromec Team

Welcome to the Lectromec podcast with John Gilroy. The podcast that helps you improve your understanding of aircraft electrical systems. Every month we interview experts in the public and private sector to help you increase your knowledge of the design and maintenance of aerospace wire systems. Today’s guest is Chris Teal, the Marketing Director from […] Read more

Understanding unexpected arc track resistance test results

September 12, 2015 Michael Traskos

Lectromec has been testing wire for the past thirty years. We have seen nearly every conceivable variation of aerospace wire testing. Some tests are straight forward and require little or no additional explanation of the test results; other tests require a fair bit of explanation to understand the test itself and what the results mean. Read more

An aircraft EWIS perspective with Petar Glamoclija

May 29, 2015 John Gilroy

Today’s interview is with Petar Glamoclija, Senior Consultant at Mitsubishi Aircraft Corporation. Petar shares an aircraft EWIS perspective and his vast experience in aerospace wiring that includes Embraer, Bombardier, Boeing, and now Mitsubishi Aircraft Corporation. His current focus is on Electrical Wiring Interconnection Systems (EWIS) and Flammability. Petar was born in Belgrade, Serbia and has […] Read more

Wire & Cable meets Lectromec: A summary of the interview

April 24, 2015 John Gilroy

Last week Michael Traskos, President of Lectromec and noted EWIS expert, sat down with Mary Gannon, Senior Writer from Wire & Cable Tips, for a podcast interview. This article summarizes the interview. Read more

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