KYDS: Know Your Drive System KYDS -Know Your Drive System – is our new program where you learn more about variable speed drive system and the most important system components (transformer, VFD, electric motor, cooling system, harmonic filter). Scope of KYDS The scope of the Know Your Drive System program Read more…
How to take oil samples properly? In this short blog post we share a basic guideline and set of recommendations how to take oil samples properly. Introduction Analyzing the quality of transformer insulation oil by means of oil samples is a standard practice used for decades. Important is to keep Read more…
Success story on transformer rental for critically important compressor drive End of last year our company had the opportunity to rent the VFD transformer to support an important European production plant of a global chemical company. This case has proven our capital spare transformer concept. Learn our success story on Read more…
How to calculate the short circuit current in a correct way? Calculation of short circuit current is essential for the design, dimensioning and protection of electric systems. Such system may be for example a substation, a transmission line, a generator or a variable speed drive system. In fact, the calculation Read more…
InterCity-Express (ICE) – The German high-speed champion In this blog post we look at another high-speed champion on European railway tracks: the InterCity-Express, well known as ICE. These trains are the highest category trains in the fare system of Deutsche Bahn (DB, German state railway). Note: ICE in this post Read more…
Protection of VFD-fed motors How to properly protect an inverter-duty variable-speed electric motor? What protection is covered by the VFD? What shall be done externally? Which protection elements are most suitable? The article on protection of VFD-fed motors brings the answers. General considerations System and equipment protection is of crucial Read more…