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.
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.
In the past year, the rate of acceleration in the cost of raw materials (including steel, iron ore, copper and aluminum) has reached unprecedented levels in the pump and rotating equipment industries.
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.
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.
When maintaining motors, proactive strategies are required.
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.
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?
Water and wastewater systems in the United States use a tremendous amount of power. The EPA estimates that these systems use 50 trillion watt-hours annually at a cost of $4 billion. Combined with electric rate increases upward of 20 percent in a single year, water and wastewater system operators are left with an enormous strain on their budget.
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.
Due to the delicate nature of the cranberry, pump failure is not an option.