500kv線路用鋼芯鋁絞線(LGJ)型式試驗項目特性試驗 Type test item of characteristic test adapt aluminium conductor steel-reinforced used in 500 KV line.
蠕變性能參數(shù) Wriggle variation performance parameter 試樣根數(shù):4根(僅以LGJ-720/50為例) 試驗條件:試樣端頭間的長度:14m 試樣端頭處理:環(huán)氧樹脂澆鑄 引伸儀測試的有效長度:5000 ±1mm 試驗溫度:20 ±1℃ 試驗精度:應(yīng)力:±1% 應(yīng)變:±0.01mm/5000mm 試樣張力:25.59kN(15%RTS) 試樣記錄時間:在加載負荷reach達到后,起開始以1、2、3、4、5、6、7、10、30、60(分遞增的時間紀律伸廠與相應(yīng)溫度值。隨后3天內(nèi)每1小時記錄一次,第四天起至第5天內(nèi)2小時記錄一次,第6天起4小時記錄一次,第15天起后6小時記錄一次,總試驗時間為1000小時 試驗結(jié)果:在15%RTS、25%RTS、35%RTS的張力下的蠕變方程可推出10年(87600小時)后的蠕變量分別為280、541、794mm/km。 Sample number :4(for example LGJ-720/50) Test condition sample length: Length of two end sample:14m Treatment of two end sample:epoxy resin pouring Testing valid length of the simultaneity elongation instyument Rest temperature:20 ±1℃ Test precision: Stress: ±1% Strain: ±0.01mm/5000m Sample tension:25.59kN(15%RTS) 42.66kN(25%RTS) 59.71kN(35%RTS) sample record time:when tension loading reach a value,homologous value of elongation and temperature are recorded at the increasing time of 1、2、3、4、5、6、7、10、15、30、60minutes;following three day,the value are recorded every one hour;form day to the five day,the value are record every two hour;form the six fourteen day,the value are recorded every four hour;from the fifteen day,the value are recorded every six hour,the testing time is 1000 hour. Test result:The wreggle variation equation at the 15%RTS、25%RTS、35%RTS、tension loading can deduce the wriggle variaion value as following:280、541and 794mm/km.
振動疲勞試驗 Vibratory fatigue test 振動參數(shù):振動角25~300 ,張力為拉斷力保證值的25%。 振動次數(shù):3 × 10-7 次 試驗結(jié)果:鋁單線不斷股。 Vibratory parameter:Vibratory angle:25~300 ,tension is the percent 25 of breaking ;oad. Vibratory time:3 × 10-7 Test result:single aluminium wire non-breaking. |