With vertical and horizontal variants available, this series is ideal for both three-phase and single-phase oil-immersed power transformers operating at frequencies of 50Hz and 60Hz. It is designed to be compatible with transformers featuring a maximum equipment voltage and a rated current ranging from 63A to 1200A. The tap-changer can be conveniently fixed on the transformer tank cover or wall, allowing for de-energized tap changes and replacements.