Accurate measurement of electrical power is the foundation of any efficiency analysis, yet three-phase power, the standard for industrial motors, is easy to measure incorrectly. Understanding how to measure it properly ensures that efficiency...
The purchase price of an electric motor is often the figure that gets the most attention, yet for a motor that runs regularly it is usually the smallest part of the total cost. The...
Variable speed drives are frequently promoted as a route to energy savings, and the claim is well founded, but the size of the saving depends heavily on the application. Understanding where the savings come...
Sizing a motor correctly means matching it not only to the load but to the pattern of operation, the duty cycle. A motor that runs continuously has very different requirements from one that starts...
A motor does not operate in isolation from its surroundings; the conditions where it is installed influence how it performs and how long it lasts. Temperature, altitude, humidity, and cleanliness all play a part,...
A common and costly misconception is that a motor uses energy in proportion to the work it does, so that a lightly loaded motor is automatically economical. In reality, motor efficiency depends strongly on...
Every motor must deal with the heat its losses produce, and how it is cooled affects not only its reliability but also aspects of its efficiency. Understanding the common cooling methods and their implications...
Individual efficiency improvements are valuable, but the greatest and most lasting gains come from a systematic approach. A motor efficiency audit program brings structure to the effort, ensuring that the motors offering the biggest...
Upgrading to high-efficiency motors is widely encouraged, but for any specific motor the decision should rest on economics, not slogans. Examining the economics of such upgrades reveals when they are compelling, when they are...
Motor efficiency is regulated and classified around the world, and while the goal everywhere is the same, to promote efficient motors, the standards and requirements vary between regions. Understanding that these frameworks exist, and...