... order size, XX stands for rated voltage , unit is kV , XXX stands for rated current ,unit is A. Dry ... ,sheath,terminal,sealed systemand connection.Dry type high voltage wall bushing features1. Non-porcelain, non-gas, unfilled oil2. Fire proof ... : 40.5~252 kVRated frequency: 50HzRated current: 100~5000ADiscerption bushing type current transformerRated current ratio: 1A ,2A,5ASecondary winding accuracy ...