# Archive: Category «Electrical Lectures»

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# Solve These Ten DC Circuits and Train Your Brain!

I guess you’re still recovering from an awesome lunches and dinners you’ve had during holidays. Well, now when it’s over – it’s a good moment to plug yourself back and… Read more

Jan 04, 2018 | Edvard

# Current Systems (AC/DC) And Voltage Levels Basics You Must Never Forget

There are many electrical engineering basics you really must know at any time, even in the middle of the night! The basics we will discuss here are current systems and… Read more

Nov 29, 2017 | Edvard

# Easy understanding of 3-phase transformer connections (Delta–Delta, Wye–Wye, Delta–Wye and Wye–Delta)

Three-phase voltage transformations can be accomplished by using three phase transformers, which are single devices with all windings constructed on a single iron core. Three phase voltage transformations also can… Read more

Jul 14, 2017 | Edvard

# How to calculate number of steps & reactive power of the capacitor banks

Depending on the size of a compensation unit, it is assembled with capacitors of equal size (in bigger units) or of different size. A unit with a total reactive power… Read more

May 17, 2017 | Edvard

# How good are you at reading electrical drawings? Take the quiz.

Every electrician, in every branch of electrical work, will need to consult and understand the information presented on electrical drawings to locate the various outlets, the routing of circuits, the… Read more

Apr 05, 2017 | Edvard

# What is the complex power and how it figures in power analysis

Considerable effort has been expended over the years to express power relations as simply as possible. Power engineers have coined the term complex power, which they use to find the… Read more

Mar 17, 2017 | Edvard

# Basic three phase power measurements explained in details

Although single-phase electricity is used to supply common domestic and office electrical appliances, three phase alternating current (a.c.) systems are almost universally used to distribute electrical power and to supply… Read more

Jan 13, 2017 | Edvard

# What is an inductor and how it works (facts you must NEVER forget)

We have all heard the term Inductor many times, but what is it? Well, it is a passive element designed to store energy in its magnetic field. Inductors find numerous… Read more

Nov 30, 2016 | Edvard

# 6 transformer operating limitations that make it far from ideal

There are few operating limitations that make transformer far from ideal. Generally, some of transformer operating limitations can be minimized, but not in total, never in total. Let’s talk about… Read more

Sep 28, 2016 | Edvard

# Three-phase transformer connections and vector groups for beginners

In theory a three-phase transformer works like three separate single-phase transformers with shared limbs in which the magnetic circuit for the outer limbs is longer than for the centre limb…. Read more

Sep 19, 2016 | Edvard

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