Because operational costs ride on efficiency determinations, accurate measurements of losses occurring within the motor are paramount. The reliability of efficiency data is key to any energy-savings...
Pumps & Systems, September 2007 Because operational costs ride on efficiency determinations, accurate measurements of losses occurring within the motor are paramount. The reliability of...
Electric Motor Efficiency Regulations Part One
Integral Hp AC motors Between 1-500 hpThe Energy Independence and Security Act of 2007 (EISA), which restates and broadens the definition of General Purpose Electric Motors, goes into effect on...
Electric Motor Efficiency Regulations Part Two
What pump manufacturers and pump users need to know about small electric motor regulations. Second of Two Parts.Part One of this two-part article discussed Integral HP AC Motors from 1 to 500 hp...
Electric Motors: Driving to Higher Efficiency
The freefall in electric motor sales is a direct effect of the worldwide economic downturn, which has severely depressed industrial and commercial productions. Despite the 20 to 30 percent drop in...
Using ESP systems for artificial lift
Due to the expense and labor required, most facilities need to maximize the life of their motors. Electrical, insulation resistance and thermal measurement are three tests that can troubleshoot...
Pumps & Systems, June 2008 Due to the expense and labor required, most facilities need to maximize the life of their motors. Electrical, insulation resistance and thermal measurement are three...
Explosion Proof Couplings
Mechanically generated sparks, electrostatic discharge and high surface temperatures are all potential ignition sources in explosive atmospheres. Flexible couplings play a significant role in creating...
Following the development of variable frequency converter drives during the 1990s, totally enclosed fan-cooled (TEFC) AC induction motors became viable options for replacing DC motors in pumping...
Pumps & Systems, June 2008Following the development of variable frequency converter drives during the 1990s, totally enclosed fan-cooled (TEFC) AC induction motors became viable options for...
An argument in favor of IEEE-841's provision for motor bearing protection.In June, 2007, a reader asked Electrical Apparatus magazine, "How long should motor bearings last?" The answer will astound...
Pumps & Systems, June 2008 An argument in favor of IEEE-841's provision for motor bearing protection. In June, 2007, a reader asked Electrical Apparatus magazine, "How long should motor bearings...
Pumps & Systems, June 2009The pump industry is the largest purchaser of electric motors in the United States. According to the U.S. Department of Energy (DOE), electric motors consume more 50...
Pumps and Systems, June 2009The pump industry is the largest purchaser of electric motors in the United States. According to the U.S. Department of Energy (DOE), electric motors consume more 50...
Pumps & Systems, June 2007 Why integrating vibration monitors with process controls provides fast response to pump faults, adds predictability and avoids unexpected shutdowns.  ...
Intelligent Pump Cleaning Cuts Maintenance Time
The installation of an AC drive with an advanced software tool has dramatically cut call-outs for blockages at an Irish county council pumping station. Pump control software has been installed to...
Pumps & Systems, June 2008Vibration is one of the most damaging forces in the industrial environment. Vibration not only reduces the life of equipment, but can also adversely affect the quality of...
A number of choices are available  when connecting pumps, fans and other rotating equipment to an electric motor. There are numerous mechanical and fluid coupling designs and, in some cases, a...
Microprocessor-Based Pump/Motor Protection Relays
Today's lean maintenance staff needs pump and motor protective devices that diagnose and predict problems before they become acute.Pumps are indispensable in mining, petroleum recovery (wellhead...
Pumps & Systems, November 2008Mechanical resonance occurs when an external source amplifies the vibration level of a mass or structure at its natural frequency. For a rotating mass like a motor or...
Pumps and Systems, February 2007All electric motors (motors) have a housing that contains the working components of the motor. In the U.S., the enclosure describes this housing. The enclosure should...
All electric motors (motors) have a housing that contains the working components of the motor. In the U.S., the enclosure describes this housing. The enclosure should meet specific environmental...
When maintaining motors, proactive strategies are required.Whether the subject is motors, a maintenance department or an entire organization, typical maintenance methods are categorized as reactive,...
The global economic downturn has resulted in an unprecedented attempt by world governments to help stimulate their individual economies, with the hope that these combined efforts will have a...
Pumps and Systems, June 2009 The global economic downturn has resulted in an unprecedented attempt by world governments to help stimulate their individual economies, with the hope that these combined...
Motors, Drives Improve High-Rise Condo Efficiency
Significant energy and money savings are realized when using variable speed motors controlled with drives.The Villa Magna, a 92-unit luxury condominium in Highland Beach, Fla., sits between the...
Current state and growth opportunities The low voltage motors market is highly consolidated, with the top five participants accounting for more than 75 percent of the market revenues as of 2009. Low...
Pumps & Systems, August 2007Even when a redundant pumping system is in place, it can be advisable to monitor the condition of the operating units in critical applications where maintaining...
Operation and Maintenance of Vertical Motors
 Construction features are key to vertical motor application and maintenance.The definite-purpose application of vertical motors dictates a number of construction features that set them apart...