Browse Topic: Cable and wire harness

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Improving the Sound Transmission Loss of Wire Harness Pass Throughs2025-01-011805/05/2023
Abstract Improving the Sound Transmission Loss of Wire Harness Pass Throughs For years the NVH community has known that openings in the dash sheet metal, such as holes to pass wire harnesses through, create an acoustical weak point that limits the potential noise reduction of the dash insulation system. These pass throughs can also be a source of water leaks into the vehicle’s interior. With the combustible engine and now electric inverter power plants, the need to seal this area is vital. By molding a lightweight barrier that draws through the fiber/absorber interior decoupler and dash sheet metal which mates to a secondary seal molded into an outer engine dash decoupler, the two opposing molded barriers meet in the engine compartment and compress together forming a seal around the wire harness. This male/female molded seal replaces the conventional snap in grommet and eliminates noise/water leaks. The system Sound Transmission Loss (STL) is equivalent to similarly insulated sheet
Check, James, Moritz, Charles
Technical Paper
115/200 Volt, 400 Hz Aircraft External Electrical Power Connector Contact Maintenance ProceduresAIR4365B (Current)09/30/2021
This SAE Aerospace Information Report (AIR) describes procedures for use in the field to determine if 115/200 Volt, 400 Hz aircraft external electrical power connectors are excessively worn, which may result in the inability of the external power plug to be retained, intermittent electrical performance and arcing.
AGE-3 Aircraft Ground Support Equipment Committee
Information Report
Evaluation of Cable Harness of an Electric Vehicle Powertrain through Simulation2021-26-035009/22/2021
The Electric Vehicles (EV) or Hybrid Electric Vehicle (HEV) has a bunch of electrical/electronic components and its operation give rise to complicated EMI/EMC issues. The Power Electronics Module (PEM), comprising of DC-DC convertor and Battery Management Unit (BMU), is driving the inverter and motor to propel the vehicle. “Battery Pack Module” powers these units through cables. The fast switching of these circuit elements present in the system leads to noise propagation through the cables. These noise signals give rise to various Electromagnetic (EM) related issues in the cable harness of vehicle. It is essential that these cables should not interfere with other electronic components and also does not get effected by external EM disturbances. The critical EM aspects such as Cable Coupling, Immunity of cable in EM environment (Radiated Immunity) as per AIS-004, Emission from the power cables (Radiated Emission) as per AIS-004, Shielding Effectiveness for cable harness of the EV
H, Rajesh, Mahajan, Rahul, Dandge, Sunil
Technical Paper
Guide for Installation of Electrical Wire and Cable on Aircraft Landing GearAIR4004A (Current)08/09/2021
Recent field experience has indicated significant problems with some types of wire and cables as routed on aircraft landing gear. This SAE Aerospace Information Report (AIR) is intended to identify environmental concerns the designer should consider, materials that appear to be most suitable for use in these areas, routing, clamping, and other protection techniques that are appropriate in these applications. In recent years aircraft certification regulatory agencies introduced new regulations regarding Electrical Wiring Interconnection Systems (EWIS) to further enhance safety of the associated systems and aircraft overall.
A-5B Gears, Struts and Couplings Committee
Information Report
CABLE ASSEMBLY EXTERNAL ELECTRIC POWER, AIRCRAFT 115/200 VOLT, 400 HERTZAS90328A (Current)08/05/2021
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Technical Standard
CABLE, LOW INDUCTANCE, 270 VOLT DCAS5756/7B (Current)07/15/2021
AE-8D Wire and Cable Committee
Technical Standard
Unshielded High Voltage Primary CableJ1654_202107-TEST-REC (Historical)07/15/2021
This SAE Standard covers unshielded cable, 22 gauge and larger, intended for use at a nominal system voltage up to 600 V or 1000 V (ACrms or DC). It is intended for use in surface vehicle electrical systems.
Cable Standards Committee
Technical Standard
Unshielded High Voltage Primary CableJ1654_202107 (Current)07/15/2021
This SAE Standard covers unshielded cable, 22 gauge and larger, intended for use at a nominal system voltage up to 600 V or 1000 V (ACrms or DC). It is intended for use in surface vehicle electrical systems.
Cable Standards Committee
Technical Standard
CABLE, POWER, ELECTRICAL, 600 VOLTS, PORTABLE, MULTICONDUCTORAS5756/3B (Current)06/22/2021
AE-8D Wire and Cable Committee
Technical Standard
Fundamentals in Wire Selection and Sizing for Aerospace ApplicationsAIR6540B (Historical)04/30/2021
The scope of this report is to capture fundamental principles of selecting a wire size for an aerospace application using the method prescribed in the AS50881 standard and additional calculations, not found in AS50881, to ensure the wire selection will adequately perform in the specific physical and environment conditions. This report covers wire selection and sizing as part of the electrical wire interconnection systems (EWIS) used in aerospace vehicles. Aerospace vehicles include manned and unmanned airplanes, helicopters, lighter-than-air vehicles, missiles, and external pods. This document does not apply to wiring inside of airborne electronic equipment but shall apply to wiring externally attached to such equipment. Wire selection must consider physical and environmental factors to size wires such that they have sufficient mechanical strength, do not exceed allowable voltage drop levels, are protected by materials or circuit protection devices, and meet circuit current carrying
AE-7C Systems
Information Report
Fundamentals in Wire Selection and Sizing for Aerospace ApplicationsAIR6540B-TEST-REC (Historical)04/30/2021
The scope of this report is to capture fundamental principles of selecting a wire size for an aerospace application using the method prescribed in the AS50881 standard and additional calculations, not found in AS50881, to ensure the wire selection will adequately perform in the specific physical and environment conditions. This report covers wire selection and sizing as part of the electrical wire interconnection systems (EWIS) used in aerospace vehicles. Aerospace vehicles include manned and unmanned airplanes, helicopters, lighter-than-air vehicles, missiles, and external pods. This document does not apply to wiring inside of airborne electronic equipment but shall apply to wiring externally attached to such equipment. Wire selection must consider physical and environmental factors to size wires such that they have sufficient mechanical strength, do not exceed allowable voltage drop levels, are protected by materials or circuit protection devices, and meet circuit current carrying
AE-7C Systems
Information Report
Research in OFDM-Based High-Speed In-Vehicle Network Connectivity for Cameras and Displays2021-01-015104/06/2021
Growing trends of connected and autonomous vehicles have pushed for increased resolutions of cameras to 8Mpix and displays to 4K/8K, leading to requirements for high-speed interfaces that support 10Gbps and beyond. Unlike data center or enterprise networks which normally operates under controlled indoor environments, in-vehicle networks are required to operate in harsh temperature and interference environments. Due to cost restrictions, the use of single pair wire is prevalent for in-vehicle networks. In general, as data transmission speed increase, signal spectrum spreads across greater frequency range. Since insertion loss of a channel increases in proportion to signal frequency, it becomes more difficult to secure SNR (signal-to-noise ratio) margins as bit rate increases. This makes it increasingly difficult for a device (e.g. ECUs, sensors, and displays) with high-speed communication interface to meet EMC (electromagnetic compatibility) criteria imposed by automotive OEMs. If this
Kondo, Taiji, Ueda, Kayo, Serizawa, Naoshi, Koike, Tomoyuki, Kondo, Hisashi
Technical Paper
Legibility of Print on Aerospace Wires and CablesARP5607B (Current)01/12/2021
The purpose of this SAE Aerospace Recommended Practice (ARP) is to provide recommendations for marking wire and cable insulations to meet legibility requirements. This information is generic and applies to any type of wire marking system, such as an ultraviolet (UV) laser marking system or an inkjet or other ink based wire marking system. This ARP is limited to the legibility of human-readable characters and does not address bar code or other machine-readable symbols. In this ARP, the term wire refers to jacketed cables and fiber optic cables in addition to individual wires. This ARP defines the factors that affect the legibility of markings on wiring. Two generic types of variables affect legibility: stimulus variables and environmental variables. Stimulus variables are those factors involving the mark itself. This ARP establishes a set of guidelines for key stimulus variables that contribute to legibility and which should be taken into consideration in the course of specifying and
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Recommended Practice
Surgical Robotics: The Art of Saving Costs with CablesTBMG-3831201/01/2021
Ever hear of the respected bicycle manufacturer known as Cannondale? You probably have. Perhaps you even own one of their bikes. I actually do. Since 1971, Cannondale has produced among the most well-recognized and trusted, high-performance bicycle brands in the United States. But they don’t actually make everything their bikes comprise.
Magazine Article
AS6021 Aerospace Fiber Optic Cable Assembly Drawing SpecificationAS6021A (Current)12/29/2020
This SAE Aerospace Standard (AS) defines the items that shall be considered when creating a fiber optic cable assembly specification and source control drawing intended for installation on aerospace platforms.
AS-3 Fiber Optics and Applied Photonics Committee
Technical Standard
AS6021 Aerospace Fiber Optic Cable Assembly Drawing SpecificationAS6021A-TEST-REC (Historical)12/29/2020
This SAE Aerospace Standard (AS) defines the items that shall be considered when creating a fiber optic cable assembly specification and source control drawing intended for installation on aerospace platforms.
AS-3 Fiber Optics and Applied Photonics Committee
Technical Standard
Electrical Wiring Fuel CompatibilityAIR6820A-TEST-REC (Historical)09/18/2020
This SAE Aerospace Information Report (AIR) is limited to the subject of compatibility of wiring as part of aircraft Electrical Wiring and Interconnect Systems (EWIS) installed in and around aircraft fuel tanks.
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Information Report
Electrical Wiring Fuel CompatibilityAIR6820A (Current)09/18/2020
This SAE Aerospace Information Report (AIR) is limited to the subject of compatibility of wiring as part of aircraft Electrical Wiring and Interconnect Systems (EWIS) installed in and around aircraft fuel tanks.
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Information Report
Temporary COVID-Specific Treatment and Testing Facilities Require Distinct Interconnect SolutionsTBMG-3759009/01/2020
Since the onset of the COVID-19 pandemic, the diagnostic testing, medical equipment, and healthcare professional communities have shifted much of their focus to temporary facilities requiring radio-frequency (RF) and microwave-dependent communications and diagnostic systems. The overwhelming demand for community-based testing (over 30,000,000+ tests administered to date) was further complicated by the fact that most testing needed to be accomplished in temporary field sites.
Magazine Article
How Unlimited-Length Flexible Printed Circuits Are Transforming Electrical Interfaces in Medical DevicesTBMG-3758309/01/2020
Undergoing surgery is a costly procedure, often involving a hospital stay and the ongoing monitoring of the patient after discharge. During and after an operation, the patient is put through considerable stress, both mentally and physiologically, which affects the body’s respiratory, cardiovascular, excretory, and immune systems in particular. Whenever possible, limiting the size and number of incisions made during surgery by using minimally invasive surgery (MIS) techniques is extremely beneficial to the patient’s recovery time.
Magazine Article
Developing Products Amid COVID-19: Innovating Production Systems for Surgical Mechanical Cable MakingTBMG-3723307/01/2020
Did you know that to be able to say, “not this again,” in response to the current global health emergency, you would have to be no younger than 102 years old? It’s true. The last time the world saw such a crippling public health crisis, the year was 1918, when the flu pandemic sickened one-third of the world’s population. But, in the throes of a calamity unseen in over a century, which has now even shut down the world’s economy, one would think manufacturing would simply stop as well. And certainly, with unemployment figures estimated to be as high as 20 percent in the United States, the highest ever since the Great Depression, it isn’t difficult to imagine a slowdown in the making of virtually anything built by America’s proud stable of manufacturers.1
Magazine Article
CONNECTOR, PLUG, AIRCRAFT EXTERNAL POWER, 115/200 VOLT, 400 HERTZAS7974/1B (Current)05/20/2020
AE-8C1 Connectors Committee
Technical Standard
CABLE, SAFETY, FERRULE, ELONGATED AND KITS NICKEL ALLOY, UNS N06600AS3619B (Current)04/06/2020
E-25 General Standards for Aerospace and Propulsion Systems
Technical Standard
Aerospace & Defense Technology: April 202020AERP0404/01/2020
Coiled Spring Pins What Do They Do? How Do You Install Them? Ruggedizing Coaxial and Fiber Optic Cable Assemblies from Mechanical Strain Bringing Turbine Power to Small Aircraft Bringing Turbine Power to Small Aircraft Limiting Creep in Aerospace Materials Advances in Millimeter-Wave Isolator Design Launch Manufacturers into Stratospheric Operating Frequencies NASA Prepares for the Moon and Mars with Expanded Deep Space Network A Focal Plane Array and Electronics Model for CMOS and CCD Sensors in the AFIT Sensor and Scene Emulation Tool Developing an improved model capable of generating realistic synthetic data that represents a wide range of systems can lead to new algorithms and data exploitation techniques. Deformation Sensing in Soft Bio-Surrogate Materials Accurate measurement of deformations occurring within or on soft materials has recently generated interest for its benefits to the fields of soft robotics and wearable biomedical sensors. Real Time Physiological Status
Magazine Issue
Ruggedizing Coaxial and Fiber Optic Cable Assemblies from Mechanical StrainTBMG-3661204/01/2020
From fiber optics to coaxial cables, common failure points in harsh environments call for various augmentations to enhance an interconnect’s operational lifetime. These modifications can range from the addition of armoring for crush/impact resistance to optimizing cable jacketing material for resistance to chemical/oil ingress. Mechanical strain is often a cause for premature failures of interconnects. Understanding the reasoning and methods behind ruggedizing commonly leveraged interconnects such as fiber optic and coaxial cables can be enlightening.
Magazine Article
Ruggedizing Coaxial and Fiber Optic Cable Assemblies from Mechanical Strain20AERP04_0204/01/2020
From fiber optics to coaxial cables, common failure points in harsh environments call for various augmentations to enhance an interconnect's operational lifetime. These modifications can range from the addition of armoring for crush/impact resistance to optimizing cable jacketing material for resistance to chemical/oil ingress. Mechanical strain is often a cause for premature failures of interconnects. Understanding the reasoning and methods behind ruggedizing commonly leveraged interconnects such as fiber optic and coaxial cables can be enlightening.
Magazine Article
Fluoride Offgassing in Fluoropolymer InsulationsARP6229 (Current)03/24/2020
This SAE Aerospace Recommended Practice (ARP) shall be limited to information about corrosion caused by fluoride offgassing of fluoropolymer-based wire insulation. It reviews published reports of corrosion caused by this phenomenon, describes scenarios where this may be a concern, mitigation options, and references a test method which can be used to evaluate wire insulations where needed.
AE-8D Wire and Cable Committee
Recommended Practice
CONNECTOR ACCESSORIES, ELECTRICAL, TERMINATION, SHIELD SPLIT SUPPORT RING, COMPOSITE, NONENVIRONMENTAL, STRAIGHT, CATEGORY 7AS85049/93C (Current)03/19/2020
AE-8C1 Connectors Committee
Technical Standard
Test Methods for Insulated Electric WireAS4373F (Current)03/12/2020
This standard describes test methods for insulated, single conductor, electric wire intended for aerospace applications. Particular requirements for the wire being tested need to be specified in a procurement document or other detail specification. Suggested minimum requirements are included in the notes at the end of some of the test methods. SAE Performance Standard AS4372 uses some of the tests in this document for evaluating comparative performance of aerospace wires.
AE-8D Wire and Cable Committee
Technical Standard
Fundamentals in Wire Selection and Sizing for Aerospace ApplicationsAIR6540A (Historical)03/06/2020
The scope of this report is to capture fundamental principles of selecting a wire size for an aerospace application using the method prescribed in the AS50881 standard and additional calculations, not found in AS50881, to ensure the wire selection will adequately perform in the specific physical and environment conditions. This report covers wire selection and sizing as part of the electrical wire interconnection systems (EWIS) used in aerospace vehicles. Aerospace vehicles include manned and unmanned airplanes, helicopters, lighter-than-air vehicles, missiles, and external pods. This document does not apply to wiring inside of airborne electronic equipment but shall apply to wiring externally attached to such equipment. Wire selection must consider physical and environmental factors to size wires such that they have sufficient mechanical strength, do not exceed allowable voltage drop levels, are protected by materials or circuit protection devices, and meet circuit current carrying
AE-7C Systems
Information Report
Celebrating Women in Engineering & Science: Mary Hardgrove, Assembly SupervisorTBMG-3618603/01/2020
Magazine Article
Immunity to Radiated Electromagnetic Fields - Bulk Current Injection (BCI) MethodJ1113/4_202002 (Current)02/24/2020
This SAE Standard defines a method for evaluating the immunity of automotive electrical/electronic devices to radiated electromagnetic fields coupled to the vehicle wiring harness. The method, called bulk current injection (BCI), uses a current probe to inject RF onto the wiring harness in the frequency range of 1 to 400 MHz. BCI is one of a number of test methods that can be used to simulate the electromagnetic field. The test method refers to ISO 11452-4 (please refer to ISO 11452-4 for test procedures). In addition to ISO 11452-4, this test method also includes a differential bulk current injection (DBCI) test. DBCI is described in Section 4 of this document.
Electromagnetic Compatibility (EMC) Standards
Technical Standard
Design and Handling Guide Radio Frequency Absorptive Type Wire and Cables (Filter Line, AS85485)AIR4465A (Current)01/31/2020
This document presents design and application information which will allow optimized utilization of filter line wire and cable purchased to AS85485. Filter line wire is defined and design information is presented. The electrical and mechanical performance characteristics of the wire, along with recommended harnessing methods and techniques, are also presented.
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Information Report
Performance Specification for Cable-to-Terminal Electrical CrimpsUSCAR21-4 (Current)01/22/2020
This specification defines test methods and requirements for validation of solderless crimped connections. The purpose of this test is to simulate in the lab the stress seen in a typical life (15 years and 150000 miles) for a crimp connection and assure the crimp is mechanically strong and electrically stable. This specification was developed for use with stranded automotive copper wire. Only where specifically mentioned are other constructions or other core materials (aluminum, clad, steel core, etc.) applicable. This specification does not apply to wire types not mentioned, such as coaxial cable crimps, unless a USCAR-21 test is specifically referenced in the test specification for that wire type. This specification is based on accepted levels of environmental exposure for automotive applications. In any intended vehicle application, if the products covered by this specification are or may be subjected to conditions beyond those described in this document, they must pass special
USCAR
Specification
Wired for Autonomy20AVEP01_0501/01/2020
Wiring harnesses are already heavy, complex and costly, so what happens when AV equipment is added? Two experts weigh in. Engineers and product planners are already grappling with the complexity of autonomous vehicles (AVs), with the prospect of complexity increasing. Every second, AVs manage advanced-sensor fusion via high-bandwidth networks, while onboard computers run AI algorithms to process gigabits of data. Connecting it all is the wiring harness, which has become increasingly heavy, more expensive and more difficult to package within the vehicle. Premium-segment cars and full-size trucks can contain 40 different harnesses comprised of 700 connectors and more than 3,000 wires. Stretched in a continuous line, these wires would span 2.5 mi (4 km) and weigh approximately 132 lb. (60 kg). In addition, there can be more than 70 specialty cables that include coax, high-speed data and USB runs.
Scott, Dan, Hoff, Ulrike
Magazine Article
Marking of Electrical Insulating MaterialsAS5942 (Current)12/27/2019
This specification establishes the performance requirements for the identification of wire and cable by indirect markings that have been applied to electrical insulating materials including heat shrink sleeving, wrap around labels and “tie-on” tags as well as any other types of materials used for indirect marking. This specification covers the processes used to mark these materials, including impact ink marking, thermal transfer, hot stamp, and lasers, etc. This specification does not cover the direct marking on insulated electrical wires and cables.
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Technical Standard
Electrical Connectors and Wiring, Compatibility ofAIR1329C (Current)11/12/2019
This SAE Aerospace Information Report (AIR) defines the areas where incompatibility may exist between the selected wire and the electrical connector in which it is terminated and how to design for compatibility. Refer to ARP914 for a glossary of connection terms.
AE-8C1 Connectors Committee
Information Report
Q&A19AUTP11_1711/01/2019
Valeo is an industry leader in technologies essential to vehicle electrification and connected/automated driving. The French Tier 1 pioneered 48V mild-hybrid systems and is a major producer of e-hardware and software including belt-starter generators, power electronics, electric superchargers and traction motors. Valeo recently entered a collaboration with Dana Inc. to develop and supply electrified AWD systems featuring 48-V hybrid power. The first of these is scheduled to launch in volume in early 2020 with a major European OEM. One of the architects of Valeo Group's steady evolution as a mobility-tech supplier is Guillaume Devauchelle, vice president of Innovation & Scientific Development. He joined Valeo in 2000 after the acquisition of Italy-based wiring harness maker Sylea where he served as VP of R&D. Monsieur Devauchelle recently spoke by phone with editor-in-chief Lindsay Brooke.
Magazine Article
SHIELD TERMINATION, SOLDER STYLE, INSULATED, HEAT-SHRINKABLE, ENVIRONMENT RESISTANT WITH PREINSTALLED BRAID, CLASS 1, NON-ROHSAS83519/3A (Current)10/25/2019
AE-8C2 Terminating Devices and Tooling Committee
Technical Standard
CABLE, ELECTRICAL, 600 VOLTS, PORTABLE, MULTICONDUCTOR, OZONE RESISTANTAS5756/4B (Current)10/22/2019
AE-8D Wire and Cable Committee
Technical Standard
Wire and Cable Marking Process, UV LaserAS5649A (Current)10/21/2019
This standard is applicable to the marking of aerospace vehicle electrical wires and cables using ultraviolet (UV) lasers. This standard specifies the process requirements for the implementation of UV laser marking of aerospace electrical wire and cable and fiber optic cable to achieve an acceptable quality mark using equipment designed for UV laser marking of identification codes on aerospace wire and cable. Wiring specified as UV laser markable subject to AS4373 and which has been marked in accordance with this standard will conform to the requirements of AS50881.
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Technical Standard
Step & Repeat: Reduce Derivative Aircraft Development Risk with Design Reuse2019-01-187109/16/2019
The complex and risky process of designing derivative aircraft, especially when it comes to electrical systems, can be a daunting task at best. There are a number of design strategies that can be employed to mitigate risk and increase the overall efficiency. Quite simply, the current methods of manual processes, design and integration approaches that were optimized from mechanical approaches, are no match for today’s complexities. One method gaining significant traction is to employ a central database serving global interface definitions for the entire design process. Automation through generative design minimizes manual intervention and repetitive work. Furthermore, detecting changes through design rule checks allows system engineers to verify their designs, capturing both inadvertent and planned changes. The ability to instantly update the design content from the new definition streamlines the change management process. Employing these technologies in a digital, connected thread
Askar, Muhammad
Technical Paper
WIRING HARNESS - EXTERNAL POWER, 115 VOLT AC, SINGLE PHASEAS24122A (Current)08/30/2019
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Technical Standard
Communication Transceivers Qualification Requirements - LINJ2962/1_201907 (Current)07/18/2019
This document covers the requirements for transceiver qualification. Requirements stated in this document will provide a minimum standard level of performance for the LIN transceiver block in the IC to which all compatible transceivers shall be designed. No other features in the IC are tested or qualified as part of this recommended practice. This will assure robust serial data communication among all connected devices regardless of supplier. The goal of SAE J2962-1 is to commonize approval processes of LIN transceivers across OEMs. The intended audience includes, but is not limited to, LIN transceiver suppliers, component release engineers, and vehicle system engineers.
Vehicle Architecture For Data Communications Standards
Recommended Practice
S400 Copper Media Interface Characteristics Over Extended DistancesAS5643/1A (Current)07/09/2019
This SAE Aerospace Standard (AS) establishes guidelines for the use of IEEE-1394-2008 Beta (formerly IEEE-1394b) as a data bus network in military and aerospace vehicles. It encompasses the data bus cable and its interface electronics for a system utilizing S400 over copper medium over extended lengths. This document contains extensions/restrictions to “off-the-shelf” IEEE-1394 standards, and assumes that the reader already has a working knowledge of IEEE-1394. This document does not identify specific environmental requirements (electromagnetic compatibility, temperature, vibration, etc.); such requirements will be vehicle-specific and even LRU-specific. However, the hardware requirements and examples contained herein do address many of the environmental conditions that military and aerospace vehicles may experience. One should refer to the appropriate sections of MIL-STD-461E for their particular LRU, and utilize handbooks such as MIL-HDBK-454A and MIL-HDBK-5400 for guidance. This
AS-1A Avionic Networks Committee
Technical Standard
Guidelines for Harness Critical Clamp Locator Marker Installation on Electrical Cable AssembliesARP5614 (Current)06/11/2019
This ARP specifies the recommended methods of marking electrical wiring and harnesses to aid in the positioning/routing of electrical wiring, harnesses and cable assemblies.
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
Recommended Practice
Consideration of Corrosion Behavior of Aluminum Wire at Crimped Terminal and Effective Anti-Corrosion Treatment2019-01-048604/02/2019
The demand for weight reduction of vehicles is growing in compliance with CO2 emission control requirements. Also, demand for copper is on the rise with an increase in the number of electric vehicles because their motors and wiring require a lot of copper. This has raised concerns about higher copper prices and vehicle weight. Recently, attempts to reduce vehicle weight have been actively made by partially replacing copper with aluminum, which is lighter and less expensive. Although the use of aluminum wires on limited areas of some vehicles has already been reported, that on all areas has not been reported yet. The authors focus on reducing weight of wiring harnesses, which is about 20 kg per vehicle, and consider using aluminum instead of copper as the conductor of the electrical wires. One of the factors impeding the use of aluminum wires in wider areas is galvanic corrosion occurring at crimped terminals. Since aluminum causes galvanic corrosion when the metal is in electrical
Kawaguchi, Takuya, Fukaura, Keiji, Nakamura, Yuki, Mochizuki, Makoto, Otani, Satoshi
Technical Paper
Study of Replacing the Traditional Electromechanical Relay with the Full Semiconductor Solution of Bussed Electrical Center2019-01-048404/02/2019
To face the challenges of CO2 emission and automated driving, the electrical distribution system (EDS), as the basis of all electronic loads, needs to be continuously changed. Traditional bussed electrical center (BEC) has limited functions such as simple switch and fuse protection, while the full semiconductor solution of smart BEC can provide more accurate diagnosis, faster response, higher reliability with lower power loss and smaller space. This paper will introduce the practical function of the smart BEC: in normal operation of the car, the voltage and current of the loads can be detected by the smart BEC. Once in abnormal, immediate feedback will be transferred from smart BEC to the whole system and a related response will be triggered in time, while the cost of power harness can also be optimized. In parking mode, the quiescent current of the loads from KL30 can be detected by smart BEC, which could prevent against leakage. Automated driving is a hot topic, many people focus on
Tian, Xia, Shen, Ning, Wang, Xingwei
Technical Paper
Electrocutting and Mechanical Cutting for Endoscopic ApplicationsTBMG-3402503/01/2019
Even the simplest medical cable assembly projects contain numerous engineering considerations. And among the most complex applications, the quantity of requirements can skyrocket. Factors such as diameter, construction, material, coating, length, and tolerance are only a few of the often-mountainous specifications medical device engineers must consider. Regardless of the complexities of a medical cable assembly, the decision as to how to cut the cable is built in to virtually any medical device cable project, big or small, intricate or straightforward.
Magazine Article
Fundamentals in Wire Selection and Sizing for Aerospace ApplicationsAIR6540 (Historical)01/10/2019
The scope of this report is to capture fundamental principles of selecting a wire size for an aerospace application using the method prescribed in the AS50881 standard and additional calculations, not found in AS50881, to ensure the wire selection will adequately perform in the specific physical and environment conditions. This report covers wire selection and sizing as part of the electrical wire interconnection systems (EWIS) used in aerospace vehicles. Aerospace vehicles include manned and unmanned airplanes, helicopters, lighter-than-air vehicles, missiles, and external pods. This document does not apply to wiring inside of airborne electronic equipment but shall apply to wiring externally attached to such equipment. Wire selection must consider physical and environmental factors to size wires such that they have sufficient mechanical strength, do not exceed allowable voltage drop levels, are protected by materials or circuit protection devices, and meet circuit current carrying
AE-7C Systems
Information Report
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