LZZBW-35W3 current transformer adopts outdoor imported cycloaliphatic resin casting and belongs to support type full-closed structure. The product can be made four secondary windings，each winding can be tapped to realize three ratios with large external insulation creep distance, withstanding dirtiness and ultraviolet radiation. Be suitable for matching with 36kV(Up to 40.5 kV) outdoor sulfur hexafluoride breaker for measuring electric energy, current and protective relaying.