Electric Motor
What details a motor nameplate shows and how to use them
We have all seen the motor nameplate attached on the motor side (or on top). All motors have a permanent nameplate which lists all important data, further data is usually available… Read more
Aug 26, 2016 | By Edvard
Energy and Power
Calculate reactive power of the capacitor bank and improve power factor
For the dimensioning of the capacitor bank to be installed in order to improve the power factor of a plant, it is necessary to calculate correctly the power factor according… Read more
Aug 24, 2016 | By Edvard
Maintenance
Should you choose fixed or withdrawable medium voltage switchgear?
How to make the right choice between fixed or withdrawable medium voltage switchgear when selecting a new equipment for power substation? The following evaluation procedure should be conducted: Find out… Read more
Aug 22, 2016 | By Edvard
Electric Motor
Motor wiring guidelines (Cable shielding, grounding and splicing techniques)
This technical article describes shielding, grounding, and splicing techniques for use with motor wiring. This article covers the following topics: Understanding noise in motor power wiring Shielding motor power cables… Read more
Aug 19, 2016 | By Edvard
Low Voltage
Why busbar trunking system is a space saving solution worth every penny
As line distribution boards, busbar trunking system (BTS) also belongs to the group of switchgear assemblies documented in IEC 61439 (VDE 0660-600). Apart from the general requirements of IEC 61439-1… Read more
Aug 17, 2016 | By Edvard
Electrical Lectures
Basic measuring of resistance, voltage and current using digital multimeter
Digital multimeter has generally replaced the analog-type multimeter as the test device of choice for maintainers because they are easier to read, are often more compact and have greater accuracy…. Read more
Aug 15, 2016 | By Edvard
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
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
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
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
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
Energy and Power
5 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
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
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
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
