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 to harmonics. Those harmonics contribute to the overall losses and 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
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