Energy and Power
Earthing in DC distribution systems similar to the AC systems
This technical article shows earthing of a specific pole of a two-wire DC distribution systems. The decision whether to earth the positive or the negative pole shall be based upon operational circumstances on site or other considerations. The Standard IEC… Read more
Jul 20, 2016 | By Edvard Csanyi
Low Voltage
Few good tips for low voltage switchgear maintenance and care
The low voltage switchgear involves many devices like power circuit breakers, MCBs, aux. relays, CTs, VTs etc. and of course at the end – enclosures (indoor or outdoor type). The frequency of inspection and maintenance of low voltage switchgear should be… Read more
Jul 18, 2016 | By Edvard Csanyi
Electrical Lectures
The essentials of AC power transformers for students and beginners
AC power transformers are one of the keys to allowing widespread distribution of electric power as we see it today. Transformers efficiently convert electricity to higher voltage for long distance transmission and back down to low voltages suitable for customer… Read more
Jul 15, 2016 | By Edvard Csanyi
Energy and Power
Electricity and water do not form a happy partnership, do they?
Electricity and water do not form a happy partnership and so it is often necessary to “dry out” insulation. This may be done to remove surface moisture or perhaps to drive moisture from the internals of the insulation. Indeed some… Read more
Jul 13, 2016 | By Edvard Csanyi
Protection
Commissioning tests of protection relays at site (before set to work)
Installation of protection relays at site creates a number of possibilities for errors in the implementation of the scheme to occur. Even if the scheme has been thoroughly tested in the factory, wiring to the CTs and VTs on site… Read more
Jul 11, 2016 | By Edvard Csanyi
Electrical Lectures
The basics of power in alternating current circuits (you MUST NEVER forget)
In a DC circuit, the power is equal to the voltage times the current, or P=V×I. This is also true in an AC circuit when the alternating current and voltage are in phase. That is, when the circuit is resistive…. Read more
Jul 08, 2016 | By Edvard Csanyi
Electrical Lectures
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 advanced electrical fundamentals and formulas. I have already briefly… Read more
Jul 05, 2016 | By Edvard Csanyi
Energy and Power
Why is Good Grounding Important And What Can You Do About It?
The transient nature of lightning with its associated fast rise times and large magnitude currents mean that special consideration needs to be given to the good grounding, for lightning protection to be effective. Many factors such as soil resistivity variations,… Read more
Jul 04, 2016 | By Edvard Csanyi
Datacenters
Electrical Design Project Of Sun’s Datacenter In Santa Clara, California
This technical article provides a top-to-bottom overview of Sun Microsystems’s Santa Clara, California datacenter from electrical design aspect. Sun’s electrical design tour of Santa Clara datacenter is done through a series of single line diagrams. These diagrams illustrate the various components… Read more
Jul 01, 2016 | By Edvard Csanyi
Energy and Power
Power Distribution Network Explained To Electrical Engineers (Beginners)
In the UK, voltages of 132 kV, 110 kV, 66 kV, 33 kV and 11 kV are typically used to provide primary distribution, with a 380–415 V three-phase and neutral low voltage supply to smaller consumers, such as residential or… Read more
Jun 28, 2016 | By Edvard Csanyi
Electric Motor
6 Common Setting Parameters Available On Most Of The Softstarters
This technical article includes a short description of six common setting parameters available on most of the softstarters. Other settings may be available depending on the type of softstarter and manufacturer. The setting can be done either by adjusting potentiometers, changing… Read more
Jun 27, 2016 | By Edvard Csanyi
Energy and Power
4 Main Types Of Distribution Feeder Systems To Recognize
Let’s take a look at the four most common distribution feeder systems applied nowadays. There are few other variations, but we will stick to the basic ones. It’s very important to understand why and where each of distribution feeder systems (topologies)… Read more
Jun 23, 2016 | By Edvard Csanyi
Electric Motor
12 Basic Motor Types Used For Industrial Electric Drives
Almost all modern industrial and commercial undertakings employ electric drive in preference to mechanical drive because it possesses the following advantages : It is simple in construction and has less maintenance cost Its speed control is easy and smooth It… Read more
Jun 21, 2016 | By Edvard Csanyi
High Voltage
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 out that an HVDC transmission system provides environmental… Read more
Jun 20, 2016 | By Edvard Csanyi
Electric Motor
Why does electric motor fail and what can you do about it?
As you already know, electric motor is used everywhere in industry and in term of technology – it’s already pretty complex, sometimes making it a challenge to keep it running at peak performance. It’s VERY important to remember that the causes… Read more
Jun 16, 2016 | By Edvard Csanyi
