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Articles in Industry Publications

Conexiones Externas en los Motores Eléctricos Trifásicos

En Español

  • November 2019
  • Number of views: 11854
Webinar recording

La conexión incorrecta de los motores eléctricos es una causa frecuente de fallo y es más común de lo que parece. La falta de información y la mala interpretación de los datos de placa son algunas de sus causas. En este webinario se explican los diferentes tipos de conexiones para los motores eléctricos trifásicos de una o varias velocidades con al menos 6 cables de salida y se comparan las equivalencias NEMA e IEC para el marcado de cables. La información proporcionada también será de gran utilidad para evitar el conexionado incorrecto en los diferentes voltajes. También incluye las conexiones por devanado partido (Part Winding) y como interpretar la información de la conexión de la placa de datos.

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Proper Motor Cleaning: Avoiding Damage to the Motor and the Environment

  • March 2019
  • Number of views: 5413

This session examines features, benefits and drawbacks of both conventional and alternative methods of cleaning electric motors. 

DC Theory and Design 101

  • March 2019
  • Number of views: 6249

This webinar will cover video animation of a DC motor, attraction / repulsion explanation as magnets and more.

Bearing Analysis and Failure Modes

  • March 2019
  • Number of views: 5860

This webinar will identify and define these failure modes true and false brinelling, spalling and more.

Vibration Problems With Motors Installed on Vertical Pumps

  • March 2019
  • Number of views: 5301

This webinar will provide an understanding of the nature of this style pump and the various forces essential to diagnosing and correcting vibration problems on vertical pump motors.

Winding & Bearing Temperature Sensing Devices

  • March 2019
  • Number of views: 4779

This webinar session will address the topic of a various temperature sensing devices including RTD’s, thermostats, thermocouples and thermistors. The advantages of each and the proper application will be covered.

Vibration of Belt Driven Machines

  • March 2019
  • Number of views: 4870

This one-hour webinar will examine identifying belt vibration, identifying pulley pitch line run-out vibration and more.

Vertical Turbine Pump Shaft Journal Bearing Material, Types and Clearances

  • March 2019
  • Number of views: 5327

The rules of thumb often applied to journal bearings in horizontal machines don’t apply to vertical machines. Vertical turbine pumps are a common example. This webinar will explain the characteristics of bearing in these pumps and provide examples of manufacturers specifications. 

Vertical Turbine Pump Repair Tips

  • March 2019
  • Number of views: 4798

Vertical turbine pumps are used extensively in every segment of industry. Although they are not complex, repairing them in the service center can present a few challenges. 

Unusual Winding Connections & Layouts

  • March 2019
  • Number of views: 5003

Unusual winding connections can create real headaches if they aren’t correctly identified when the data is taken. And the time required to “get it right the second time” comes directly off your bottom line.

Vertical Bearing Systems & Setting End Play

  • March 2019
  • Number of views: 2952

This session will look at various configurations of vertical motor thrust bearing arrangements. We will also discuss the reason for having or not having end play, what that end play should be and how to get there. 

Understanding Mechanical Fits

  • March 2019
  • Number of views: 3026

This webinar will explore the basics of fits in mechanical assemblies, some of the standards that define them and their application in the inspection and repair of rotating electrical machines.

Time-Saving Repair Tips

  • March 2019
  • Number of views: 3012

This webinar shares secrets used by other service centers to gain a competitive edge in the repair process. Mechanical, winding and machining tips reduce repair time, help avoid unnecessary rework, and decrease turn-around time.

The FFT (aka Spectrum): What It Is and Ways to Use It

  • March 2019
  • Number of views: 3404

This webinar will examine how the spectrum is generated from the vibration signal, the effect of f-max and resolution settings and more.

Techniques for Straightening Pump Shafts

  • March 2019
  • Number of views: 3332

This webinar will present a methodical approach and effective techniques for measuring and correcting shafts which are bent or twisted.

Taking Three-Phase Winding Data

  • March 2019
  • Number of views: 3171

This webinar will stress the importance of taking accurate winding data and explain and emphasize the consequences of inaccurate data. Details will be provided on how to take accurate electrical and mechanical data; and how to verify that the data is correct. 

Submersible Pump Cable Entries and Seals

  • March 2019
  • Number of views: 3322

This webinar will address the important link in sealing submersible pumps.

Strength and Characteristics of Motor and Pump Shaft Materials

  • March 2019
  • Number of views: 3192

Most service center technicians and managers know the general properties of a few common grades of steel used for motor and pump shafts. This webinar will expand that knowledge by defining the important parameters of a range of steel grades and how they affect performance.

Squirrel Cage Rotor Testing

  • March 2019
  • Number of views: 3559

Determining whether or not a squirrel cage rotor is defective is an issue that is a challenge to every service center as there is often no simple way to determine the integrity of a rotor. The primary focus of this session will be to describe many of the available tests that can be utilized in the service center or at the motor installation site.

Root Cause Failure Analysis Methodology

  • March 2019
  • Number of views: 3344

Root Cause Methodoloy is a step-by-step method for examining a failed motor and its system. It focuses on the stresses that acted upon the failed component. By better understanding these stresses, the service center is more likely to uncover the root cause of failure.

Rewinding Tips for Premium-Efficient Motors

  • March 2019
  • Number of views: 2949

This webinar will outline tips for successfully rewinding premium efficient motors without compromising their efficiency, and for rewinding inverter-fed motors so they will last.

Repairing Impeller Damage

  • March 2019
  • Number of views: 3202

We’ve covered how to assess impeller damage in a previous webinar. Now learn how to fix that damage. This webinar will cover replacing/repairing wear rings and more.

Repair/Replace: When the Decision is Replace

  • March 2019
  • Number of views: 3088

The subject of the repair option in the repair/replace decision process has been dealt with frequently. However, the topic of what to do when the decision is to replace is rarely if ever addressed. This session is intended to help fill that void.

Repair Tips for Submersible Pumps

  • March 2019
  • Number of views: 3356

This webinar focuses on submersible pumps types of submersible pumps, tips on seal arrangements and more.

Repair Best Practices to Maintain Efficiency

  • March 2019
  • Number of views: 2963

There are certain repair processes, such as winding removal and replacement, that can impact the efficiency and reliability of electric motors. Prudent repair practices must not increase overall losses, and preferably should maintain or reduce them. 

Reclosure: How It Happens and What To Do About It

  • March 2019
  • Number of views: 3324

Reclosure occurs when power to a motor is briefly interrupted and restored before the magnetic field has fully collapsed in the motor’s winding. If this occurs while the applied power is out of phase with the collapsing field, significant damage can result. 

Quick Pump Curves: How to Read Them

  • March 2019
  • Number of views: 3151

This webinar will take the mystery out of pump curves and provide attendees with the necessary knowledge to determine pump operating points, efficiency and horsepower. 

Pumps Seals—Advanced

  • March 2019
  • Number of views: 3314

This webinar will focus on a review seal basics, seal materials for primary and secondary seals and more.

Pump Cavitation

  • March 2019
  • Number of views: 3276

This webinar will "bring you up to speed" on cavitation in centrifugal pumps.

Practical Problem Solving for the Entire Service Center

  • March 2019
  • Number of views: 3149

This webinar examines features, benefits and drawbacks of both conventional and alternative methods of cleaning electric motors.