• What You Should Know about an Arc Flash and Arc Blast

    Arc flash incidents are among the common causes of electrical injuries in a facility. These events result from a combination of heat and light emitted during a dangerous electrical explosion. With hot gasses released into the air by an arc flash, they immediately melt metals and similar materials. Copper and other metals also tend to vaporize in an explosive manner because of the high temperature. The plasma arc becomes even more powerful as vaporized metal provides this effect. Moreover, fatalities occur from arc flash incidents. Severe injuries include eyesight damage and radiation
    14 Feb
  • Understanding the Basics of an AC Induction Motor

      To understand how an AC induction motor works, it helps to look into the basics of magnetism and electromagnetic induction. We will break these two ideas down and how they impact the functions of AC induction motors. Basic Magnetism Magnetism refers to the force that attracts or repels two objects from each other. This action takes place because of a magnetic field that exists with the movement of electrically charged particles. Magnets, for instance, have a strong magnetic field which attracts certain ferrous materials to them such as nickel, steel, cobalt, and iron. Identical p
    09 Feb
  • How Much Do You Know About Hollow Shaft Motors?

    There are many different types of motors that used across a wide range of industries. Some of them are specific to certain tasks, while others care for a wide variety of needs. In the agricultural industry, one of the common types of motors used is the hollow shaft irrigation motor. It solves an issue often seen in agriculture, the need to water crops when the reservoirs are not adequate. History For many years, people used groundwater to water their crops. They used horizontal pumps above ground to pull the water up to the surface. The problem was there were high operating costs invol
    07 Feb
  • Advantages of Using an AC Drive

    An AC drive controls the speed generated by an electrical motor by altering the power supply's frequency. By using an AC drive with motors operating at a constant speed, it is possible for operators to meet speed and process control, along with other benefits. The following are among the important benefits of an AC drive to your motors, productivity level, and profits. Benefits of an AC Drive Reduced Starting Current Most designs geared towards a lower starting current tend to compromise the size, power factor, cost, and energy efficiency. These designs are why AC induction motors are likel
    02 Feb
  • PdMA Tip of the Week: the #1 Motor Killer Is …

    This week's PdMA tip: #1 Motor Killer Is ... You guessed it. Heat. Excessive temperature is the #1 killer of electric motor insulation. However, not always does the remaining evidence lead the investigator to the root cause. So what could be the root cause of excessive heat? High resistance connections, severe rotor bar defects, improper ventilation, poor power quality, etc. With so many root causes resulting in high temperatures, it is no wonder heat the #1 killer of your electric motor. Get a handle on these root causes with your PdM technologies, and you will get a handle on the
    01 Feb
  • 3 Ways to Increase the Efficiency of Your VFD

    Variable Frequency Drives (VFDs) serve an important purpose of ensuring the speed of your AC induction motor is at a desirable rate. Thus, the use of VFDs help improve the performance of a motor, as well as prolonging its lifespan. It is instrumental in minimizing the risks of premature wear and tear of AC induction motors, along with the enhancement of the process control and energy efficiency. It is possible to change the speed of the motor at a quick rate through a VFD. A VFD is beneficial in addressing any changes in temperature, force, and load. As a result, the process control be
    31 Jan
  • Preventing Problems With Preventative Maintenance

    There are many different pieces of equipment relied on more than others at your facility. In manufacturing, electric motors are the most critical equipment in the building. They not only drive your business; they are an essential part of almost everything that takes place. In fact, they may be one of the largest assets in any facility. When working normally, motors add to the productivity and efficiency of your operation. The opposite is also true. When motors fail, they halt your process. Rising expenses occur each moment of downtime. Being reactive to motor maintenance costs you i
    26 Jan
  • Know Your Motor’s Health With Cable Testing

    Do not underestimate the importance of keeping your facility running at any given time. There is a myriad of circumstances that result in unexpected downtime. Taking care of your equipment is one of the best ways to cut surprises. Avoid those surprises and downtime with maintenance and routine cable testing. Among the ways to test your cables are polarization index (PI) and insulation resistance (IR) testing. A Tale of Two Similar Ways of Cable Testing When looking at cable testing, there is confusion sometimes because IR testing is like PI testing. The two test work well together. See
    24 Jan
  • Knowing How to Deal with Bearing Failures is a Security Blanket

    Electric motors are vital to any manufacturing facility. They represent a significant amount of commitment in investment and maintenance. Protecting your investment requires paying attention to details. Healthy ball bearings are one of the most important details keeping your investment from failure. With proper maintenance and care, ball bearings last for a long time. Because of their fragility, it is important to ensure correct installation and application of the bearings to extend their lifespan. Certain issues occur, however, if bearings are not lubricated or installed the correct w
    19 Jan
  • PdMA Tip of the Week: Why Wye

    This week's PdMA tip: Why Wye? Sometimes your six lead motors are configured to start in a Wye configuration and switch to a Delta configuration during the start-up known commonly as Wye Start/Delta Run. This starting method minimizes current demand during starting and reduces the impact on the power system, therefore, lessen the chance of the motor tripping off-line in a distressed power system. As motor analysts and technicians, we need to remember that when de-energized the three phases are completely disconnected from each other. Connecting your MCE® test leads to motor leads
    18 Jan
  • Infographic: Difference Between Electric Motors & Generators

    Electric motors and electric generators, regarding their function, are quite distinct from one another. But ultimately, they exemplify two sides of the same coin. Both rely on the same underlying physical principles, and understanding those principles has been instrumental in the development of even the most commonplace modern technology. This infographic illustrates the history behind the development of motors and generators. It also provides a glimpse of how significant role science played.
    17 Jan
  • How the IoT is Changing Predictive Maintenance

    With newer technologies introduced year after year, there are many ways for industries to improve their operations. These advancements are a positive impact their bottom line. One of these advancements is the Internet of Things or IoT. IoT refers to the interconnection of devices used in everyday life to the web. Many companies are adopting this next generation of the internet to their business processes. They are especially choosing to use the internet when the process refers to their predictive maintenance programs and asset management. We will look into the different and innovative
    12 Jan
  • 5 Tips for Better Preventative Maintenance Programs

    It is important to ensure the excellent performance of your electric motors. They have a massive impact on the productivity and profit of your business. Although operating these motors may seem rather straightforward and simple, the last thing you should do is to overlook their condition. This is why you need to perform preventative maintenance checks on your electric motors as a part of managing your assets in the facility.   By preparing a checklist for your preventative maintenance program, you can make sure that every motor is properly examined and monitored. This also provi
    10 Jan
  • What Electric Current Does to the Body

    Electric current is something that exists in the world around us, and many of us use it on a day-to-day basis. Not only does it exist naturally, but it also is channeled for industrial purposes as well. OSHA considers working around electric current to be one of the most dangerous occupations. And for a good reason. There are an estimated 30,000 nonfatal accidents involving electric current each year. Plus, 600 individuals die because of electrical accidents in the United States every year. Using the path of least resistance, electric current always moves from one point to another. One
    05 Jan
  • PdMA Tip of the Week: Starting Current vs. Running Current

    This week's PdMA tip: Starting Current vs. Running Current When it comes to supply voltage variations, there is a difference in response between starting current and running current. A drop in line voltage results in a lower starting current and a higher operating current. A rise in line voltage up to 5% increases starting current and slightly reduces running current. If the line voltage rises more than 5%, both starting and running current are higher. ___ PdMA® Corporation is an industry leader in the field of predictive maintenance (PdM) and condition monitoring, globally off
    04 Jan