Electric Motors 

By on

Electrical motors are one of the most common items of electrical equipment in service today.  From toys and household appliances to the largest machines on the planet electric motors are used.  Motors as the single biggest users are estimated to account for between 43 and 46% of total global electricity use[1].

Given the widespread use of motors, it is not surprising that many of the posts on myElectrical deal with this topic.  This note is a collection of links to many of our motor notes and a few external resources.  I’ll try and return to the page every now and again to update it with any new notes which are added to the site.

Internal (myElectrical) Links

Induction Motor Calculator Tool – does motor calculations and provided a formulae reference

Motor Starting Time Tool - calculate the approximate starting time for asynchronous motors

Understanding electric motor insulation & temperature - in easy to understand form

How to Calculate Motor Starting Time Post – post which explains how to do this

Understanding Motor Duty Rating Post – explains IEC duty ratings

8 Motor parts and common faults Post – list of common motor faults

Motor Starting – Introduction – introduction to motor starting

Other Notes Articles

The internal links were last updated June 2015.  If your reading this note later, it may be worth using the site search to look for additional information which may have been added.

External Links

The following links are external to myElectrical and provided for reference only.

What is an electric motor? –  find the answer on answers.com

Basic motor theory -  ac motor, dc motor and generator theory

Electric Motor – Wikipedia's article on electric motors in general

AC motor – Wikipedia’s article (types of motor, history and some theory)

AC Industrial Electric Motors – RS datasheet (pdf download)

Two Speed Motors – a primer on two speed motors (motorsandrives.com)



Steven McFadyen's avatar Steven McFadyen

Steven has over twenty five years experience working on some of the largest construction projects. He has a deep technical understanding of electrical engineering and is keen to share this knowledge. About the author

myElectrical Engineering

comments powered by Disqus



Generator Sizing & Operation Limits

When selecting a generator, there are inherent limits on the active and reactive power which can be delivered. Generators are normally sized for a certain...

Material Properties

Everything physical in electrical engineering from insulations to conductors revolves around materials. Here we are listing common materials along with...

Fault Calculations - Introduction

Fault calculations are one of the most common types of calculation carried out during the design and analysis of electrical systems. These calculations...

IEC 60287 Current Capacity of Cables - An Introduction

IEC 60287 "Calculation of the continuous current rating of cables (100% load factor)" is the International Standard which defines the procedures and equations...

Hazardous Areas – IEC and NEC/CEC Comparison

Depending where in the world you work, you are likely following one of two standards International Electrotechnical Commission (IEC) National...

Operational Amplifier

The fundamental component of any analogue computer is the operational amplifier, or op amp. An operational amplifier (often called an op-amp,) is a high...

Why use catalogues

I'm a fan of using manufacturers catalogues. There are two main reasons for this. Firstly, if your involved in the purchase of equipment, you will likely...

International System of Units (SI System)

The International System of Units (abbreviated SI) is the world's most widely used system of units.  The system consists of a set of units and prefixes...

Robotics - Home Innovations

We have a sister note to this (Robots - Interesting Video), in which I have posted some videos of interesting robots developed by commercial corporations...

Three Phase Power Simplified

A single phase system is perhaps the most common type of system most people are familiar with. This is what people have in their homes and what appliances...

Have some knowledge to share

If you have some expert knowledge or experience, why not consider sharing this with our community.  

By writing an electrical note, you will be educating our users and at the same time promoting your expertise within the engineering community.

To get started and understand our policy, you can read our How to Write an Electrical Note