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An Example of Transformer Tap-changer Correct Adjustment

A 13800V/4160 V transformer has five taps on the primary winding giving -5%, -2 1/2 %, nominal, +2 1/2 % and +5 % turns. If, on-load, the secondary voltage reduces to 4050…...


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How do you become a master electrician?

There are a number of differences between the Journeyman test and the Master electrician exam. Generally speaking, the test for the Master electrician’s exam has more questions, lasts longer and includes more… Read more

Jul 05, 2016 | Edvard

How do you become a master electrician? Let’s prepare for an exam!

4 Main Types Of Distribution Feeder Systems To Recognize

Let’s take a look at the four most common distribution feeder systems applied nowdays. There are few other variations, but we will stick to the basic ones. It’s very important to understand why…...


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Jun 23, 2016 | Edvard

4 Main Types Of Distribution Feeder Systems To Recognize

5 Serious Environmental Impacts Of HVAC Over HVDC Overhead Transmission Lines

The following discussion largely summarizes a paper by L. A. Koshcheev (2003) on the potential environmental impacts of HVDC overhead transmission lines in comparison to HVAC lines. In the paper, Koshcheev points…...


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This content is for Premium Membership (monthly) members only. Premium content helps you make the right decisions, take the right actions in your everyday life as an electrical engineer.
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Jun 20, 2016 | Edvard

Grounding systems and their 3-letter classification (photo credit: Edvard Csanyi)
General
Engineering Guides

Becoming the good electrical engineer requires a lot of passion, training and commitment. This comprehensive section is prepared as a resource for individuals and professionals interested in the electrical engineering career path.

In this section you will find very usefull books and guides related to electrical science in general, AC/DC electrical circuits, network protection, electrical installations, lighting etc.

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Power Substation
Handbooks

Substation engineers nowdays are involved in projects from design and conceptualization to maintenance. Because of the wide range of industries using electrical engineers, many engineers specialize in some of the sub-discipline of electrical engineering.

Depending on background and expertise, projects can include systems such as energy transmission and distribution, protection and control etc.

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MS Excel Spreadsheets

This section is dedicated to tools every electrical engineer can use in daily work. These spreadsheets developed by enthusiasts will make your job much more easier, alowing you to shorten the time used for endless calculations of power cables, voltage drop, power factor, circuit breakers, capacitors, cable size, power transformers etc.

Just to mention that all calculation spreadsheets are FREE for download!

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Variable speed drive converts single phase electricity to three phase electricity, which is needed to run large agricultural and farming equipment like irrigation units and grain elevators

Programmable Logic Controller (PLC) Book

Designing software for control systems is difficult. Experienced controls engineers have learned many techniques that allow them to solve problems. This book was written to present methods for designing controls software using… Read more

Motor Book - Grundfos

Motor Book – Grundfos

Several standards for testing electric machinery exist on a worldwide basis. For induction motors, the three most important ones are IEEE Standard 112, JEC 37 (Japan) and IEC 60034-2. The efficiency value… Read more

Lessons In AC Electrical Circuits

Lessons In AC Electrical Circuits

If we were to plot the current and voltage for a very simple AC circuit consisting of a source and a resistor (Figure 1), it would look something like this: (Figure 2)…. Read more