ABB High Voltage Transformer

ABB has achieved a milestone by successfully testing a cost-effective method to replace petroleum-based mineral oil insulating mediums with environmentally friendly natural ester fluid. This breakthrough occurred in the world's largest sealed single-phase transformer, rated at 200 megavolt amperes (MVA) and 420 kilovolts (kV). This advancement represents a significant leap forward in the development of environmentally friendly high-voltage (HV) power transformers.