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Results for: EMI

Continuity of Coating – Conductor

The conductor coating continuity test objective is to examine the conductor plating quality before it is subject to stranding or the insulation application process. As part of the test, the durability of the conductor coating is stressed with both mechanical and thermal stresses. General Procedures: For this test, a length of nickel plated conductor is […] Read more

EWIS SLEP Reassessment

Michael Traskos
In past articles, we have talked about a comprehensive assessment of Electrical Wire Interconnected System (EWIS) Service Life Extension Program (SLEP) that is possible with following the guidance laid out in MIL-HDBK-525. One of the areas that Lectromec did not cover thoroughly in these articles is what to do five or ten years after the […] Read more

Use of Cables on Aircraft – Part 3 – Testing

Michael Traskos
To continue the series of articles on NEMA27500 cables discussing their use on aircraft (part 1 and 2), this article focuses on the several tests that are necessary for cable verification and certification. There is some level of performance verification for each part of an aircraft cable. Most cable assessment tests focus on the performance […] Read more

Use of Cables on Aircraft – Part 2

Michael Traskos
In this article, we will continue the discussion by exploring the NEMA27500 cable. Four sections were covered in the Part 1 (Specification, identification and shield coverage, conductor size, and wire specification). The remaining three parts covered here are the basic component wires, shielding materials, and the jacket materials. Read more

EWIS component test listing now available

Michael Traskos
Find information and pricing for aerospace electrical component tests for qualification, verification, and performance assessment. Read more

Transfer Impedance

Protecting signal cables for external interference is critical to ensuring the reliability of transmitted signals and data. This test is among the most common means to evaluate if a cable’s shield can protect the contained circuits from EMI. But not all shielding is the same. The materials and construction play an important role in the […] Read more

Overload Resistance – Smoke Resistance

In short circuit conditions, a circuit may run over the designated current for an extended duration before the circuit protection is activated. During this time, a wire/cable may become very hot and potentially exceed its designated thermal rating. Well designed wires/cables will not release any smoke during this fault condition. The overload resistance test, also […] Read more

Joint Services Wiring Action Group (JSWAG) Spring 2016 updates

Michael Traskos
The Spring 2016 Joint Services Wiring Action Group (JSWAG) meeting was held in San Diego last week. Lectromec had the fortune to be able to attend this great meeting that included participants from all branches of the U.S. military as well as several foreign organizations. For those not familiar with the work of the JSWAG, […] Read more

11 improvements to MIL-HDBK-522 for aircraft wire systems

Michael Traskos
One of the best handbooks on EWIS routine inspection for aircraft wire systems is the military handbook MIL-HDBK-522, Guidelines for Inspection of Aircraft Electrical Wiring Interconnect Systems. The first version of the handbook was released in 2010 and provided a good starting point for EWIS inspection guidance. This guidance has been updated with the release […] Read more

How to automate aerospace bent pin wire analysis with Nat Ozarin

Lectromec Team
Today’s guest is Nat Ozarin, Senior Software and Reliability Engineer with The Omnicon Group Inc. He has decades of experience troubleshooting a wide range of issues with a particular emphasis on aircraft electrical systems. During the interview Nat reviews his academic and corporate background. He details his frustration with attempting to do bent pin analysis […] Read more