View Latest Blog Entries
Close
Categories
Testing & Assessment Certification Aging Wires & Systems Management Standard & Regulation Research Conference & Report Protection & Prevention Arcing Maintenance & Sustainment Miscellaneous
Popular Tags
Visual Inspection MIL-HDBK FAR MIL-HDBK-525 AS50881 FAR 25.1707 Wire System FAR 25.1709 Degradation High Voltage Electromagnetic Interference (EMI) Circuit Protection
All Tags in Alphabetical Order
Accelerated Aging Aging Systems Aircraft Power System Aircraft Service Life Extension Program (SLEP) Arc Fault (AF) Arc Fault Circuit Breaker (AFCB) Arc Track Resistance Arcing Damage AS22759/87 AS4373 AS4373 Method 704 AS50881 AS5692 AS6019 AS85485 AS85485 Wire Standard ASTM F2799 Automated Wire Testing System (AWTS) Bent Pin Analysis Best of Lectromec Best Practice Cable cable testing Carbon Nanotube (CNT) Certification Chafing Chemical Testing Circuit Breaker Circuit Protection Coaxial cable Compliance Conductor Connector connectors contacts Corona Corrosion Corrosion Preventing Compound (CPC) Cracking D-sub Degradation Delamination Derating Distributed Power System DO-160 Electrical Aircraft Electrical Component Electrical Testing Electromagnetic Interference (EMI) Electromagnetic Vulnerability (EMV) EMF EN3475 Energy Storage Environmental Environmental Cycling EWIS Component EWIS Design EWIS Failure EWIS Thermal Management EZAP FAA AC 25.27 FAA AC 25.981-1C Failure Database Failure Modes and Effects Analysis (FMEA) FAR FAR 25.1703 FAR 25.1707 FAR 25.1709 Flammability Flex Testing Forced Hydrolysis fuel tank ignition Fundamental Articles Future Tech Green Taxiing Hazard Analysis High Voltage Hot Stamping Humidity Variation Insulation IPC-D-620 ISO 17025 Certified Lab Laser Marking Maintenance Maintenance costs Mandrel Mechanical Testing MIL-C-38999 MIL-C-85485 MIL-DTL-17 MIL-DTL-3885G MIL-DTL-38999 MIL-E-25499 MIL-HDBK MIL-HDBK-1646 MIL-HDBK-454 MIL-HDBK-516 MIL-HDBK-522 MIL-HDBK-525 MIL-HDBK-683 MIL-STD-1560 MIL-T-7928 MIL-W-22759/87 MIL-W-5088 Military 5088 modeling MS3320 NASA NEMA27500 No Fault Found Outgassing Overheating of Wire Harness Parallel Arcing Performance Physical Testing Polyimide-PTFE Power systems Probability of Failure Product Quality Radiation Red Plague Corrosion Reduction of Hazardous Substances (RoHS) Reliability Research Rewiring Project Risk Assessment SAE Separation Requirements Series Arcing Service Life Extension Severe Wind and Moisture-Prone (SWAMP) Severity of Failure Shielding Solid State Circuit Breaker Space Certified Wires Sustainment Temperature Rating Temperature Variation Test methods Test Pricing Testing Thermal Circuit Breaker Thermal Endurance Thermal Index Thermal Shock Thermal Testing Tin plated conductors UAVs Visual Inspection Wire Ampacity Wire Certification Wire Comparison Wire System Wire Verification

Protection & Prevention

Signs of an Aging Wiring System

All components wear out over time, but the rate at which they degrade will vary depending on the quality of the product, how is it handled, and the environmental conditions in which the component is installed. To consider all the potential ways that an EWIS can fail, it can be overwhelming. As a brief list […] Read more

Nuisance Trips

Circuit protection devices are primarily responsible for protection of electrical circuits from low impedance faults. These device types may be thermal, arc fault circuit breaker (AFCB), or integrated within a solid-state power distribution. Regardless of type, their role remains the same. But circuit protection devices are not error free. In the cases when the circuit […] Read more

Ampacity Improvements

When electrical current flows down a conductor, it gets warm due to resistive heating. The more current that flows, the warmer the conductor gets. Depending on the wire gauge, conductor conductivity, and ambient temperature of the wire location, the conductor temperature reaches the maximum certified temperature. This maximum electrical current is where the outward heat […] Read more

What are the Potential Issues with Tin Plated Conductors?

Tin plated copper is a common choice for wire conductor within the aerospace industry. The advantages of using tin as the plating for copper conductors is the low cost, increases to solderability, and corrosion resistance. However, tin-plated conductor does have drawbacks. Here we review some on the key differences between common platings for aerospace wires. Read more

Electrical Fault and Fire Prevention and Protection

The prevention of electrical fires is a common goal for most aircraft systems. Advisory Circular (AC) 25-16, “Electrical fault and Fire Prevention and Protection”, released in 1991, can be considered one of the precursors to the Electrical Wiring Interconnection System (EWIS) regulations. Although the document is now 25 years old as of last month, AC 25-16 provides a wide variety of recommended practices that are commonplace in the EWIS design and installation. Here we review some of the key points addressed in AC 25-16 and considerations with modern EWIS design with respect to electrical fault and fire prevention and protection. Read more

What do advanced arc fault circuit protection devices protect?

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

4 aspects of wiring selection for special aircraft applications

Not all wires are created equal. Through the years, Lectromec has learned the best practices for wire selection that would ensure the Electrical Wire Interconnect Systems’ (EWIS) longevity. There are thousands of wire standards for the aerospace industry. These include: the National Electrical Manufacturers’ Association (NEMA) standards, the Society of Automotive Engineers (SAE) standards, as […] Read more

How you can protect aircraft electrical systems from EMI

Today’s interview is with Dan Schettler, Product Specialist at Micro-Coax. He talks about how to protect aircraft electrical systems from electronic magnetic interference (EMI). Dan’s company, Micro-Coax, has been in business for over fifty years. They have earned a solid reputation for providing custom technical solutions for wires and cable in challenging environments. The environment […] Read more

How to prevent overheating of wire harnesses in space

In the aircraft industry, a lot of effort goes into thermal management of the electrical wire interconnection system (EWIS). If not effectively managed, systems fail to operate and may lead to failures. A recent example of this is the case with the Boeing 787 battery issues (read the Report on Boeing 787 […] Read more

Principles of aircraft wiring system safety

Principles of Aircraft Wiring System Safety System safety supports risk management with the ultimate goal of optimizing safety on aircraft systems. Risk management is a vital aspect of system development that takes effect during the design phase; however it also remains important during the implementation and sustainment phases of an aircraft lifecycle. Optimizing safety is […] Read more