72.5KV Air To Oil Transformer Bushing

OIP transformer bushing is mainly used for power transformer as current for leading in out high voltage side , middle voltage side and low voltage side for transformer as well as insulate the oil tanks of power transformer.Designation : Type character : BR Longer length of oil side or porcelain insulator BRD Shorter length of oil porcelain insulator Structure: L With CT is available, 1,2,3means different length for installing CT Anti-pollutior type: W Anti-pollutior type (the level is indicated at the end), none for normal type . 1,2,3means design serial numberAdditional performance code : 3 the min. creepage is 25mm/kV, heavy pollution area 4 the min. creepage is 31mm/kV, extra heacyOperation condition: Altitude ≤1000m Ambient condition: 40 +40 (DB45) Mounting angle:30°from the vertical Free of chemical gas, extreme contamination and salt fog area