Descriptors | Power transformers, Transformers, Electrical equipment, Autotransformers, Marking, Electrical insulation, Windings, Ratings, Rated voltage, Withstand voltage, Dielectric-strength tests, Testing conditions, Dry-type transformers, Electrical testing, Overvoltage tests, High-voltage tests, Impulse-voltage tests, Partial discharges, Electrical measurement, Calibration, Overvoltage, Surges (electrical) |