Conservation through lighting alterations using different bulbs, ballasts and light sources is well understood and easy to achieve. The use of improved efficiency three phase induction motors has not been as accepted. There are a number of reasons why conservation efforts with motors have not been as popular.
Part 1: There seems to be a lot of confusion about the voltage standards for motors and why they are structured the way they are. Part 2: The effect of low voltage on electric motors is pretty widely known and understood, but the effect of high voltage on motors is frequently misunderstood.
A good deal of confusion exists regarding
the factors that determine an industrial
electric bill. The following information
is presented to help sort out the various items on which billing is based, and to offer suggestions on measures to help control and reduce electric utility bills.
In the process of applying industrial drive products, we occasionally are misled into believing that we are applying horsepower. The real driving force is not horsepower - it is torque. This paper is developed to impart a deeper understanding of torque, its relationship to horsepower, and the types of loads we most frequently encounter.
Beginning with this initial installment , and with the gracious permission of ABB/Baldor Electric, we are
pleased to announce the beginning of a new series -- Baldor Basics: Motors. This is a collection of basicsdriven,
motor-intensive articles authored by former Baldor engineer Edward Cowern, PE, a respected
name by many in the electric motor industry. During his tenure at Baldor, Cowern - now enjoying his
retirement - was tasked with producing a number of motor- and basics-related tutorials, primarily in
response to a steady flow of customer questions regarding motors. Today's customers continue to ask
questions and seek answers to address their various motor-related issues. As with Cowern's original
introduction to the series, we hope you find these articles useful and would appreciate any comments or
thoughts you might have for future improvements, corrections or topics.
If you’re an electrical engineer
you know how an electric motor works; if
you aren’t, it can be extremely
confusing. Therefore, here’s the simplified explanation (or the “how
an electric motor works for dummies” version) of how a four-pole, three-phase
AC induction motor works in a car.