ONLOAD TAPCHNGERS ARE REQUIRED WHEREEVER THERE ARE VERY FREQUENT AND HEAVY FLUCTUATIONS OF THE INCOMING VOLTAGE AND ALSO WHEN THERE ARE SEVERE LOAD FLUCTUATOINS IN THE DOWN
THE LINE FEEDER . THE HIGHER BUS VOLTAGE ALSO HELPS TO KEEP THE TAIL END VOLTAGE IN THE DISTIBUTION SYSTEM INWITH BETTER VOLTAGE CONDITIONS
