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Composite Station Post Insulator can be applied to the busbar of 12kv-252kv transformer substation in AC power system and power equipment and installations in operation. They show good hydrophobicity, ageing resistence, resistance to tracking and erosion. And they are easy to transport, install and maintain due to their high mechanical strength such as tensile strength, buckling strength and torsional strength, as well as their good impact & shock resistance, compact and light in weight. Size and characteristics NO.ModelNo.UnitSpacing(H,mm)Min,arcingdistance(h,mm)Min,nominalcreepagedistance(L,mm)Drylightningimpulsewithstandvoltage(kV)Wetpowerfreq.1minwithstandvoltage(kV)22101FZSW-12/6220±1120320753022201FZSW -24/8320±12204801255022301FZSW -40.5/4500±140010151858022302FZSW -40.5/8500±140010151858022401FZSW -72.5/8850±1700190032514022501FZSW -126/61200±21050315045018522502FZSW -126/81220±21050315045018522601FZSW -252/62120±3.51950630095039522602FZSW -252/82120±3.519606300950395