ABB expands transformer portfolio with launch of new products (WK-intern) - New range of products to facilitate digitalization of grids and offer enhanced safety, efficiency and reliability ABB today launched the world’s first dry-type (oil free) digital transformer, named the ABB Ability™ TXpert™ Dry, and another innovative product called TXpand™ at its ABB Customer World (ACW) event in Xiamen, China. The ABB Ability™ TXpert™ Dry incorporates digital capability within ABB’s proven dry-type transformers. Transformers typically use oil for cooling and insulation but dry-type transformers are designed to work without oil, where the core and the coil are cooled by air and non-flammable solid