Are you desperate with your power bank? Portable power bank is a practical solution to charge your phone, tablet, headset and other kind of small electronic devices or gadgets. A power bank is characterized by its nominal capacity, typically expressed Read more
Transformerless drives – Truth and myths Most medium voltage VFDs are supplied from the grid through an input isolation transformer. This transformer provides several key functions, such as voltage adaptation, galvanic isolation, limitation of fault current, often also harmonic reduction Read more
Test your knowledge about medium voltage drive systems How well do you know medium voltage variable frequency drives? Test your knowledge in our short quiz. Submit your answers and get a chance to win a small prize. 1. What is Read more
Harmonic study: When two do the same, it is not the same In this post we look at how various factors and considerations affect the results of network harmonic analysis. After reading this post, it shall not surprise that when Read more
How to consider explosion load of a transformer? Abstract When oil filled transformer is installed indoors, the explosion load becomes relevant for the building design. Introduction In a common setup, dry type transformers are installed indoors while oil-filled transformers stand Read more
309 days in Spain, over 1 year in Sweden No, this is not a post about my sabbatical. It is about two success stories of our rental transformer service. In critical situations, when original drive transformer is unavailable, our solution Read more
STATCOM and its application Static synchronous compensator (STATCOM) is a power electronic based equipment to provide reactive power compensation and other options functionality, such as e.g. harmonic cancellation. In this blog post we look at how STATCOM works and how Read more
Final Sale of our Webinars Do you set goals for a new year? How about investing in yourself and expanding your know-how in the area of medium voltage variable frequency drives and drive system? Now it is the perfect time Read more
What has changed in IEEE 519 between 2014 and 2022 editions? IEEE 519 is one of the most common standards regarding power quality and harmonic control. The 1992 edition was in place for over two decades until it was replaced Read more
Temperature rise test of converter transformers Abstract Purpose of a temperature rise test is to verify the thermal design of a transformer. The injected losses shall correspond to the losses in real operation at rated load. Converter transformers are subjected Read more