Power Substation
What happens when a transformer fire occurs in a substation
If a fire occurs as a result of a failure in a transformer, then the transformer is nearly always a total write off. However, the total cost of a transformer… Read more
Aug 12, 2016 | By Edvard Csanyi
Testing and Commissioning
Testing of transformer oil and winding temperature indicators
All large transformers have an oil or a winding temperature indicating device of some type, and most have temperature recorders as well. Indication may be for top-oil temperature or hotspot… Read more
Aug 10, 2016 | By Edvard Csanyi
Industrial Automation
Guidelines for PLC installation, wiring and connection precautions
Input/output installation is perhaps the biggest and most critical job when installing a PLC – programmable controller system. To minimize errors and simplify installation, the user should follow predefined guidelines. All… Read more
Aug 08, 2016 | By Edvard Csanyi
Energy and Power
First, identify ground faults and status of the neutral and then protection…
To identify ground faults in a network and therefore carry out effective protection, it is necessary to know in detail how the neutral is run. Identification of ground faults is made… Read more
Aug 05, 2016 | By Edvard Csanyi
Energy Efficiency
Three applications where variable speed drive really rocks!
Many industrial sectors have discovered the benefits of using variable speed drive (VSD) control in a wide variety of applications. Businesses in the commercial and public sectors can also utilise… Read more
Aug 03, 2016 | By Edvard Csanyi
Power Substation
Five transformer constructions you’re most likely to see inside buildings
There are several different types of transformer constructions you can see installed in substations inside commercial and other buildings. This article is generally applicable only to transformers of the liquid filled, ventilated… Read more
Aug 01, 2016 | By Edvard Csanyi
Energy and Power
Which type of residual current device (RCD) you should use for protection?
It is not quite clear when and by whom the first residual current device (RCD) was developed, but it certainly appeared on the market in the 1950s and was initially… Read more
Jul 28, 2016 | By Edvard Csanyi
Energy and Power
How standby generators work and how to dimension them?
Standby generators are used in order to provide consumers in the system entitled to standby service in the event of breakdown or shutdown of the normal power supply. They consist… Read more
Jul 26, 2016 | By Edvard Csanyi
Electrical Lectures
Challenge your electrician skills with these 15 questions
Whether you are professional or a novice in a field of electrical engineering, it’s always a good idea to challenge your electrician skills from time to time. This is your… Read more
Jul 25, 2016 | By Edvard Csanyi
Power Substation
What is distribution substation and its main components?
Distribution substation typically operates at 2.4 – 34.5 kV voltage levels, and deliver electric energy directly to industrial and residential consumers. Distribution feeders transport power from the distribution substations to the end… Read more
Jul 22, 2016 | By Edvard Csanyi
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… 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… 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… 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… 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… Read more
Jul 11, 2016 | By Edvard Csanyi
