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This study has the aim to characterize the behaviour of the space charge in an epoxy resin used as electrical insulation in systems such as transformers and bus bars. Temperature, field level, filler content and nature of the electrodes are the parameters that were considered. Space charge measurements were performed using the Pulsed Electro Acoustic technique (PEA), in a range of field and temperature up to 40kV/mm and 72°C, respectively, on gold-coated and uncoated samples. We discuss thedoi:10.1088/0022-3727/38/12/025 fatcat:vu35ij7soveczavrdlvo3kymsu