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Articles on Electrical Equipment

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A New Approach to Maintaining Process Control Field Devices Adding microprocessors to field instruments has transformed them into data acquisition systems and transmission terminals. Now technicians can use well-designed software to see what is happening inside plant instrumentation
Basic Overview of RCM Based Approach for Motor Management Programs Electric motor systems are the primary drivers of all industrialized nations. The application of a motor management program is necessary for bottom-line profits in all industrial facilities and commercial buildings. A key consideration for the development of these motor management programs is ensuring that it is the most cost effective program possible. The use of combined Reliability-Centered Maintenance (RCM) based and a follow-up Backfit RCM based program, for continuous improvement, is an outstanding process for achieving this goal. The purpose of this paper is to discuss the application and implementation of an electrical RCM/backfit RCM based program designed to guide the user in the development and continuous improvement of a motor management and motor diagnostics program and not to discuss the details of the processes.
Creating Reliable Electrical Connections Cleaning, filing, and abrading surfaces are among the options
Electrical Safety Basics Following these safety principles can provide a safer work environment
Electrical Tricks of the Trade Tricks of the Trade are very practical ideas that will save you time and a little frustration
Electrical Troubleshooting This article from Larry Bush of contains a number of practical tips to assist with troubleshooting of a range of electrical and electronic equipment.
Electronic Drives Technical Tips - Hot Spares and Load Testing One suggestion we often make regarding critical applications is keep your spare drive powered up!
Extend Motor Life with Improved Bearing Care
Failure Analysis of Electronics Assemblies Here's what you need to know before, during and after electronics assembly failure analysis.
Fieldbus Device Maintenance - Do I Need to Go to the Field Anymore? The fieldbus era has ushered in a whole new approach to configuring, diagnosing and maintaining a plant’s field devices. Field device information that used to require a trip to the field is now available remotely over the fieldbus. This paper, written by Alan R. Dewey of Emerson Process Management explores the impact that this change will have on the role of the plant engineering and maintenance staff. - requires free Adobe Acrobat Reader for viewing.
Fieldbus Improves Control and Asset Management Information generated by smart field instrumentation can significantly improve production efficiencies - requires free Adobe Acrobat Reader for viewing.
Helping Motors Keep Their Cool
How a Photoswitch Saved My Job The messages contained in this article from Larry Bush are: anyone can make a mistake and, when in doubt, check the factory specifications of the equipment you are working with
How to Troubleshoot like an Expert - a Systematic Approach The approach described here is a logical, systematic approach called the 5 Step Troubleshooting Approach. It is a proven process that is highly effective and reliable in helping to solve electrical problems.
Impact of Electric Motor System Maintenance and Management The application of motor systems maintenance and management programs have the potential impact of saving industry an initial $26.5 Billion in electrical energy costs while reducing greenhouse gas emissions by over 3,000 Mega-Tons per year.
Industrial Security & Compliance Most industries with control systems are facing many pressures to both allow access to data and to secure it. There are many forces pushing these opposing trends including data access to enable business decisions, vendor access for process improvements and advanced control exercises like loop tuning and alarm management, as well as for proving regulatory compliance. However this increasing need for access is further diluting the security of many of these systems and is putting many process control environments at risk. - requires free Adobe Acrobat Reader for viewing.
Integrating Vibration, Motor Current, and Wear Particle Analysis with Machine Operating State for On-line Machinery Prognostics/ Diagnostics Systems (MPROS) - requires free Adobe Acrobat Reader for viewing.
Keys for Effective Troubleshooting One trait of expert troubleshooters is that they are able to find virtually any fault in a reasonable amount of time. Easy faults, complicated faults, they find them all. Another trait is that they typically replace only the components that are defective. They seem to have a knack for finding out exactly what is wrong. No trial and error here. So what is their secret?
Maintaining Healthy IT Assets Most of the major Distributed Control System (DCS), Programmable Logic Controller (PLC), Supervisory Control and Data Acquisition (SCADA) and control system vendors are heavily utilizing Ethernet based communications as part of their distributed architectures, including routers, switches, and cabling. In addition many operator stations, engineering consoles and application platforms run on PC hardware using Microsoft operating systems. However, in many cases they do not include the IT hardware associated with the collection, transmission, storage and analysis of this data in their Preventive Maintenance program. - requires free Adobe Acrobat Reader for viewing.
Maintaining_Healthy_IT_Assets.pdf Control system vendors are using more Ethernet based communication networks and Microsoft operating systems - but predictive or condition based maintenance programs on these assets are often overlooked. This article discusses this issue. - requires free Adobe Acrobat Reader for viewing.
MCM : A New Technology in Predictive Maintenance MCM (Motor Condition Monitor) is a device that has the capability of detecting impending mechanical and electrical failures in motors and motor based systems at the early stages of fault development. The experimental modelling technology used in MCM can automate fault detection and prevent unplanned machine failures. The paper describes the technology and presents the results of experiments that were done to prove the capability of the MCM device in fault detection
MCM; An Inexpensive, Simple to Use Model Based Condition Monitoring Technology This paper presents an award-winning product, Motor Condition Monitor (MCM), for predictive maintenance of three phase systems, including electric motors, generators, transformers, and the equipment or process driven by them. MCM measures only voltages and currents. It has the ability of maintenance planning by detecting impending mechanical and electrical failures at the early stages of fault development through continuous monitoring. MCM also provides the user with the diagnostic information.
Megger on the Move!
Motor Predictive Maintenance Motor PDM is essential for plant reliability and only by developing a comprehensive plan to make sure all possible failure modes are checked on a routine basis will improved reliability be obtained. The first step is to determine the Reliability Basis for each motor and what technologies are going to be applied. Once the RB is determined all the tasks defined must be applied by qualified personnel and acted upon accordingly. - requires free Adobe Acrobat Reader for viewing.
NFPA 70E Electrical Standard for Electrical Safety Requirements for Employee Workplaces NFPA 70E addresses electrical safety requirements for employee workplaces that are necessary for the practical safeguarding of employees in their pursuit of gainful employment
NFPA 70E Electrical Standard for Electrical Safety Requirements for Employee Workplaces - Part 1 of 2 NFPA 70E, addresses electrical safety requirements for employee workplaces that are necessary for the practical safeguarding of employees in their pursuit of gainful employment
Overheating Electric Motors: A Major Cause of Failure On-line technologies permit assessment of the entire motor system to facilitate troubleshooting
Partial Discharge Analysis Partial discharges are small electrical sparks that occur within the electric insulation of switchgear, cables, transformers, and windings in large motors and generators. Partial Discharge Analysis is a proactive diagnostic approach that uses Partial Discharge (PD) measurements to evaluate the integrity of this equipment. - requires free Adobe Acrobat Reader for viewing.
Persistence needed to track TV/radio Interference When a complaint is about TV interference or the inability to get a specific radio channel, a specialist must be assigned to the case. New York State Electric & Gas Corp (NYSEG) relies heavily on ultrasonic technology
Plant Maintenance Management of your PLC Thousands to millions could be lost by one little PLC in an electrical panel that you never even knew existed. But most importantly, damage to machine and personnel could result from improper maintenance management of your company’s PLCs.
Protecting Mission Critical Electronics Using power conditioning, surge protection, and grounding provides a defense against the disruption, degradation, and destruction of mission critical electronic equipment
Revitalizing an Aging Grounding System Checking, testing, and updating installations improves overall electrical parameters
Selecting the correct horsepower motor Electric motors operate at their best power factor and efficiency when fully loaded so you do not want to purchase a motor that is too big, and common sense dictates that one that is too small is even worse. In the following paragraphs we are going to learn how to select the correct motor for your centrifugal pump application
Should panel covers be removed to perform an IR survey of electrical switchgear As infrared thermographers, from time to time we are asked if we could perform an electrical infrared survey without removing the panel covers…that it might be a more efficient way to perform the survey. This is a great question. It would be more efficient, but an IR survey should not be accomplished in this manner.
Solving Motor Failures Due to High Peak Voltages and Fast Rise Times
Temperature’s "Shocking" Effect on Electrical Control Systems
The Trouble with Torque in Electrical Connections Torque and force are not the same
The True Cost of COTS The sure sign of momentum is when a movement acquires its own acronym. The current enthusiasm for commercial off the shelf technology is known as COTS, and one avionics expert suggests it may be prudent to rein in the present enthusiasm
Track Corona Discharges with Ultrasonic Detector Ultrasound detectors perfectly complement infrared instruments for the routine examination of electrical equipment. While infrared inspections allow operators to detect light that the eye cannot see, ultrasound allows them to detect sounds that the ear cannot hear.
Troubleshooting Variable Speed AC Motor Drives
VFD Drive Technology Can Save Over 30% In Energy Costs Now that AC variable speed drives have become so accepted into the industrial market, the potential for retrofits and new installations remains very high.

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