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(fù)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(jì)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. |
