Apply the new type touch head structure to vacuum interrupter , make the product of trying on . the comparative test in combination circuit was carried on between the new touch head structure product and the original structure product . the result of test indicated that the vacuum interrupter based cup form horizontal magnetic field touch head structure has greater improvement in the performance of turning on current density than the original structure 將該觸頭結(jié)構(gòu)應用于現(xiàn)行的真空滅弧室中,制成試品,在合成回路與原結(jié)構(gòu)產(chǎn)品進行了比較性試驗,試驗結(jié)果表明,采用該杯狀縱磁場觸頭結(jié)構(gòu)的真空滅弧室其電流開斷密度較原結(jié)構(gòu)有較大的提高。