When a surge arises in case of lighting strike or a switching impulse, which could be the cause for insulation deterioration and at the end dielectric breakdown. This is a severe process, that depends on several factors, such as the frequency at which the transformer is exposed, the configuration of the system, the application of the component etc.
Motors and distribution transformers are constantly exposed to fast surges, when they are switched by circuit breakers. Reigniting occurs during the switching of motors and transformers with vacuum circuit breakers, because of their ability to interrupt high-frequency currents.
This article presents the analysis of the measured and calculated voltages along the high-voltage winding of the transformer.
In this article, your fellow electrical engineer Mile is observing the transient process, during the switch of electric arc furnace capacitor batteries.
Hi everyone, it’s Steven Mill again :) After the Megger vs Doble article published on July 2d, here is another article.
New article / essay by Muhammad, one of our dear senior electrical engineers. With more than 30 years of experience, he sometimes spoils us with great and original articles just like this one.
