Rockwill SV type high voltage on load tap changer, which has advanced structure, long service life and high reliability. It is normally used in oil-immersed three-phase high voltage transformer as three phase step voltage regulator with frequency 50Hz/60Hz, voltage from 110kV to 126kV, and maximum rated passing current from 200A to 350A. The on load tap changer is to regulate the output voltage of a transformer. It does this by altering the number of turns in one winding and thereby changing the turns ratio of the transformer. Contact us for more details and low price quotation.
Basic Wiring Diagram