Star Delta Conversion Off Load Tap Changer

This star-delta conversion American-box cage off load tap selector is one of our typical products which is mainly used for combined type ( base type ) transformer. The tap-changer adopts new structure, new material, and new technology and has the advantages of reasonable structure, flexible rotary, reach the position accurately etc. It is the improved product of the off-circuit tap changer in China. This series off-circuit tap changer has vertical cage structure. According to different inner structures, the connection mode includes linear regulation, single bridging, twin bridging, Y—△ conversion, serial-parallel conversion, positive-negative regulation. Installation way can be tank-cover-type and bell-type. The tap changer can be widely applicable to power, rectification, furnace and other transformers with rated frequencies of 50Hz and 60Hz, rated voltages of 35kV, 66kV and 110 kV, and rated currents of 125A~2000A. This tap changer must be operated under off-circuit status of transformer.