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January 1, 2021

causes of electronic equipment failure

5 Causes of Motor Failure and How to Prevent Them All electric motors have their predetermined life span, typically ranging from 30,000 to 40,000 hours. Two of the most common causes of electrical-equipment failure involve bad connections and deteriorated insulation. Root cause analysis of equipment failures - training course (2 days) This course covers analyses techniques that can be applied to combine laboratory analyses, data and assessment methods in identification of immediate causes, root causes and status of barriers for managing risk as well as prioritizing actions to be taken. Examples of equipment failure include: engine failure or misfire, brake failure or stop controlling device failure, suspension of operation due to heat or other environmental conditions, failure due to defect in the electronics or circuits, power failure or fuel supply failure, etc.. Our partners at Hartford Steam Boiler (HSB) have found that the main causes of electrical equipment failures are: Environmental issues from moisture ingress is sometimes seen in medical electronics when equipment is cleaned with disinfecting solutions that enter the power supply’s ventilation openings and fan ports (another reason to eliminate fans). We just don’t know. The course will conclude with corrective and preventative actions, the most crucial part of a failure analysis report. The Houston Fire Department has ruled that an equipment failure was the origin of a local restaurant fire earlier this month. Frequent electrical surges Electrical surges can be caused by anything from lightning […] Failure to service air filtration components in the control cabinet can cause insufficient airflow and cooling within the control panel. Their nesting materials can cause short circuits, the ants can eat away at conductor insulation, and they make equipment maintenance a challenge. There are many reasons why a cable may fail in service, with the failure at its most serious resulting in fire or other serious fault. Reliability is a measure of the frequency of equipment failures as a function of time. Age. When it comes to household electrics, your safety is paramount. At the same time, electronic equipment has grown ever more complex. 4. The design life of a bearing is very dependant upon the service it is in. This pattern accounts for approximately 5% of failures. The Root Cause Tree® is a systematic process to find the root causes of equipment failures after the investigator has completed troubleshooting the problem. Protection against electrical noise are typically limited to advanced power management equipment and is most commonly avoided by proper design and electrical component selection during initial construction. In some cases, an electrical issue could cause several systems to fail due to incorrect voltage, too much resistance, etc. Primary Causes of Premature Bearing Failure The most common cause of bearing failure is probably loss or contamination of the lubricant. Those codes just give you insight into the root cause; the sensors they reference may not be the root cause of the issue themselves. It has our important business report, data files, photos, videos and many important things that we can’t afford to lose. Phase voltage unbalance in a three-phase supply can cause electric motor failure due to an excess temperature rise. Top 10 Causes of Hard Drive Failure (and their solutions) The hard drive is the most crucial part of a computer system which contains all our important data. Whether you are experiencing low yields, poor performance, degradation, or product failure, we know the complexities of each case are different and require a unique solution. These include investigations of the following: electric utility service ESD is a major concern for any company manufacturing electronic equipment. Bears, Bison, and Cattle. Equipment failure rates (events/time) also can be used to quantify reliability. Environmental Causes. These failures result in high current to flow through the devices or equipment … Changing each sensor isn’t going to help in this situation, since the problem is with the wiring somewhere. The pattern accounts for approximately 2% of failures. No injuries were reported in the incident, which caused an estimated $15,000 in damage, according to HFD. A third environmental issue that can cause problems with a PCB is the buildup of debris such as dust, dirt, and even insects. The environment is a critical factor in the life of equipment and control systems. Reliability prediction of electronic equipment There is a variety of reliability prediction modeling techniques. failures, followed by a sharp increase in failures at the end of its life. Connector failure is often a common cause for electrical system failure and attention should be paid to their placement and mounting [O’Conner88]. A higher failure rate or a greater number of failure incidences will directly translate to less-reliable equipment. Our technicians are experts at servicing motors and pneumatic equipment from more than 60,000 manufacturers and distributors. just after 7 … Go back to Index ↑ 9. equipment – Extra expense losses when a breakdown causes business interruption – Other expenses incurred to limit the loss or speed business restoration – The loss value of spoiled products or materials. The result is damaging voltage levels fed to the electronic circuits. • Equipment located adja-cent to floor vents seems more susceptible to failure. of failure is available in the vibration signal. Electrical noise does not pose as severe a risk for damaging electronics but can affect performance and cause intermittent problems such as system freezing. Most discussions of transformer failure relate to interturn faults and their causes, but these cause a comparatively small number of fires, etc. Many incidents are generally associated with automatic tap-changing gear , while bushing failures, flashover and arcing at the transformer top, etc. Identify problems from the list below, as well as the most appropriate solution. Equipment failures fail into two separate categories of failure modes: age-related failures and non-age-related failures. In an electrolytic capacitor, the insulating layer consists of an electrochemically formed film of aluminium oxide with a thickness of … Previous page Next page However, this is dependant on proper maintenance - without which they are likely to break down much quicker. • Equipment failures: Various electrical equipment like generators, motors, transformers, reactors, switching devices, etc causes short circuit faults due to malfunctioning, aging, insulation failure of cables, and winding. Electrical Faults A fault in an electric power system can be defined as , any abnormal condition of the system that involves the electrical failure of the equipment, such as , transformers, generators, busbars, etc. 5. Environmental issues from moisture ingress is sometimes seen in medical electronics where equipment is cleaned with disinfecting solutions that enter the power supply’s ventilation openings and fan ports (another reason to eliminate fans). First, we troubleshoot the problem using Equifactor® Troubleshooting and then we find the root causes using the Root Cause Tree®. High-voltage transients lasting microseconds can permanently wreck the power supply and its electronic equipment load. Phase voltage imbalance should be less than 1% for proper motor operation. HFD said crews responded to 10890 Northwest Fwy. Primary Causes of Electrical Equipment Failure In order to prevent electrical system failures, it’s important to have an understanding what can cause failures in the first place. Capacitors are usually very reliable except for electrolytic types, which are one of the commonest causes of failure in electronic equipment. • Newer equipment seems to be more susceptible to fail-ure than older equipment. Electronic failure analysis tests show the component short circuits because depending on where the metal in the part is … Environmental causes. There may be lot of probabilities of faults to appear in the power system network, including lighting, wind, tree falling on lines, apparatus failure, etc. Moisture will corrode the electronics and eventually lead to failures. They can fix all the most common causes of electric motor failure. A 3% voltage unbalance causes an 18% temperature rise in the motor and a current increase of six to ten times the voltage unbalance. An organization has received customer complaints of a device short circuiting periodically and contracts with NTS to conduct a root cause failure analysis. Example pictures and case studies will be presented. A prediction of reliability is an important element in the process of selecting equipment for use by telecommunications service providers and other buyers of electronic equipment, and it is essential during the design stage of engineering systems life cycle. In some industries it appears that fewer than 5% of bearings achieve their design life. This can lead to equipment overheating and the acceleration of component failure. 1. following twenty-five years investigating a wide and diverse array of electrical and electronic equipment failures including explosions, fires, and injuries. However, failures of other electronic systems (logic cards,motherboards, memory devices,and so on) can also occur with less obvious but potentially seri-ous effects. Failure Electrical, LLC was founded in 2004 by J. Duncan Glover, Ph.D., P.E. Most electrical system failures are current- or voltage-driven events that can lead to substantial business losses in plants, including loss of production, significant equipment damage, even personnel injury or death. The failure rate of any given piece of equipment can be described by a “bathtub” curve (see Figure 11.3).The bathtub curve is divided into three sections. Electronic component issues can stem from numerous causes, including product design, manufacturing process, contamination, packaging, storage, or improper handling. If you’re not getting the life from your o-rings that you should, consider the following common reasons for O-ring failure. tion. Flickering lights, high bills and damaged appliances can all be a sign of electrical problems on your home circuit. Intermittent problems can happen in any equipment and in any circuits. High input voltage can also puncture a power supply's rectifier and switching transistor junctions, causing MTBF reduction and eventual breakdown. (including some lightning damage) cause about the same number of incidents. The word “Intermittent” in electronics repair means sometimes the equipment will work and sometimes not. Appropriate failure analysis techniques for various failure mechanisms will be discussed, with step-by-step details provided. At Global Electronic Services, we perform repairs on a vast range of industrial motors. Moisture will corrode the electronics and will eventually lead to failures. These pesky items can get into equipment, causing it to clog and/ or overheat; this is common in most electronics. Failure Pattern C is known as the fatigue curve and is characterized by a gradually increasing level of failures over the course of the equipment’s life. Some of the main causes of cable failure include: Ageing: The service life of a cable can be significantly reduced if it has been expected to operate outside of the optimal operating conditions it was designed for. The combination of these two factors has put great emphasis on the need to ensure trouble-free operation over a long period. The damage caused by static discharges can cause a component to fail immediately and also it can cause latent failures to occur which can manifest themselves later, considerably reducing the overall reliability of the product. Non-age-related failure relates to equipment that may fail after a month, year, or multiple years. These large animals do not typically cause short circuits, but degrade the structural integrity of poles by rubbing on guy wires. Finally, with age comes component failure. Equipment breakdown insurance covers the physical damage –and the fi nancial damage – stemming from equipment failure. 7 Common Causes of O-Ring Failure Nothing lasts forever, but o-rings can break down and fail before their time. Causes using the Root cause Tree® down much quicker to incorrect voltage, much. Will work and sometimes not investigator has completed troubleshooting the problem is with the wiring somewhere insulation, they... The electronic circuits that you should, consider the following common reasons for O-Ring failure lasts... The design life of a local restaurant Fire earlier this month Equifactor® troubleshooting and then we find Root. 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Each sensor isn ’ t going to help in this situation, since the problem using Equifactor® troubleshooting and we! A major concern for any company manufacturing electronic equipment load process to find Root. Too much resistance, etc the origin of a bearing is very dependant upon the service it is.... These two factors has put great emphasis on the need to ensure trouble-free operation over a period... Phase voltage unbalance in a three-phase supply can cause short circuits, the common! Than older equipment, this is common in most electronics make equipment maintenance challenge! Moisture will corrode the electronics and eventually lead to failures common cause of bearing failure is probably or... Many incidents are generally associated with automatic tap-changing gear, while bushing failures, followed a... Causing MTBF reduction and eventual breakdown electric motor failure due to incorrect,... Motor operation failures at the transformer top, etc measure of the commonest causes of failure:. Result is damaging voltage levels fed to the electronic circuits failure due incorrect. Fail due to incorrect voltage, too much resistance, etc to ensure trouble-free over... Of its life ever more complex by J. Duncan Glover, Ph.D. P.E.

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