What are the transformer guaranteed values? Like other electric equipment also transformers are generally designed in accordance with international standards. There are multiple parameters stated in the technical specification or a data sheet. However, which of them are the transformer guaranteed values? And what does the guarantee actually mean? Does Read more…
Transformer design and cost drivers Right now the transformer prices are just sky rocketing. So talking about transformer cost drivers may be like bringing wood to the forest. However, we hope that the world turns normal again. Then, in normal days, there are specific design features and accessories or options Read more…
Top 5 manufacturers of converter transformers Lists with top x products / brands / holiday destinations / restaurants / hotels etc are extremely popular. Today we would like to present a list of top 5 manufacturers of converter transformers. As every such list, the ranking is always somewhat subjective or Read more…
Testing of Converter Transformers This post discusses some aspects associated with testing of converter transformers. Most tests performed on converter duty (VFD) transformers are same as those specified for power transformers. However, there are also few differences which are highlighted in corresponding sections of this article. The aim is to Read more…
Tap changer: Yes or No? Shall a VFD transformer be equipped with a tap changer? What are the pros and cons of a tap changer on converter duty transformer? What kind of tap changer shall be used? How many taps does the VFD transformer have? This and more in our Read more…
VFD transformers: Your questions The articles from VFD transformers [1] series belong to the most frequently read posts in our blog. It seems that many visitors find us through internet search using keywords such as “converter duty transformer”, “24 pulse drive phase shift”, “extended delta transformer”, “12-pulse phase-shifting transformer”, “three Read more…
Overvoltage protection of transformers This is the continuation of [1] that made an introduction into protection of VFD transformers. The focus of this article is on overvoltage protection. Particular attention is paid to very fast transient overvoltages caused by switching of vacuum circuit breakers. Keep reading to learn about the Read more…
VFD transformer rental This post provides a brief description of our service “VFD transformer rental”. You will learn what the service is about, how it works, what is the target application etc. The contact form is located in our section Services (click here). Introduction Transformers are mainly used in power Read more…