Advances in Capacitance Graded Transformer Bushing Technology & Qualification Methods by Teresa Gargano
Transformer bushings are subject to high electric field gradients, frequent thermal excursions, thermal and mechanical loads, vibrations and can also be involved in grid failures or external events such as earthquake, windstorm and similar. Design of capacitance graded bushings is crucial to enable safe operations of transformers in every condition over their full service life.