Cellulose Insulation Paper Testing: The Three Key Tests You Need to Know
Cellulose insulation has been used as solid insulation in power transformers for over 80 years. Despite its sustainable credentials and excellent dielectric properties, cellulosic material for electrical use has many challenges, mainly related to the degradation process.
New study confirms belief about thermal class of Weidmann Transformerboard
Do you know the thermal class of Transformerboard* as part of the industry-proven insulation system used in liquid-filled transformers? Maybe you need to think again. For decades, some have considered transformer pressboard to be rated simply to 105 °C. Some in the industry have even alluded to the necessity of ‘chemical treatments’ to slow down thermal aging at elevated temperatures, in order to apply it at a higher thermal class.
Following the culmination of the past 35-years of research and development by our engineers, scientists and laboratory staff, Weidmann is proud to announce the launch of Transformerboard III. This book represents our strong beliefs in the merit of technical progress and innovation, including state-of-the-art diverse laboratory equipment and skilled staff coupled with continuous careful planning and financing of innovation projects.