Last month we took a close look at the flow of voltage and current in purely resistive and inductive circuits.
In June, 2007, a reader asked Electrical Apparatus magazine, "How long should motor bearings last?" The answer will astound you.
Unanticipated noise and vibration can be problematic for both occupants and processes within structures.
An argument in favor of IEEE-841's provision for motor bearing protection.
Shaft failures do not happen everyday, but when they do, it can be a challenge to determine the cause of failure. Here's a technical explanation of what happens when the shaft bends or breaks.
Many people feel that all pump vibrations are bad, but is this a fact or only what we think is true?
When a motor fails, users can (1) rewind, possibly for high efficiency; (2) replace the failed motor with a new motor; or (3) invest in a premium efficiency product.
Energy efficiency and reduced consumption are important issues in the pump and motor marketplace.
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 motors, drives and associated electrical panels and prolong their operational lifetime. Thermal imagers can detect potential problems and insulation resistance and electrical tests can determine the cause.
A paper or an electronic work order system can be used to capture alignment data.
Improvements in performance and energy reduction can be achieved with smart drives and system optimization.
The freefall in electric motor sales is a direct effect of the worldwide economic downturn, which has severely depressed industrial and commercial productions.
With highly reliable electrical systems, protective relays may be called upon to operate very infrequently.
How do I move from my situation to a better one? In other words, is it possible to retrofit a less-than-optimal installation with a better solution, and how?
Last September, we spoke about the importance of pipe-to-piping alignment, evaluating actual numbers, and tabulating stress values as they approach yield stress of pipe at various values of misalignment. This time, we will discuss the effects of pump-to-motor misalignment, beyond hype or generalities, by numerically quantifying the conclusions.
Why integrating vibration monitors with process controls provides fast response to pump faults, adds predictability and avoids unexpected shutdowns.
New motor starting controller provides one solution.
In many pump installations, problems such as jams and suction loss can lead to serious damage to the motor or pump long before the thermal overloads trip.
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 cumulative effect of breaking the downward spiral and lifting the global economy out of its crisis.