Non-porcelain, non-gas, unfilled oilFire proof, explosion proofMaintenance-free satisfy IEC60137 CESI passed The type of dry type high voltage wall bushings are FCRG1-L-XX/XXX, L stands for adding bushing type current transformers. If you dont need to add bushing type current transformers , you can cancel L, 1stands for design order size, XX stands for rated voltage , unit is kV , XXX stands for ...