500kv线路用钢芯铝绞线（LGJ）型式试验项目特性试验
Type test item of characteristic test adapt aluminium conductor steel-reinforced used in 500 KV line.
蠕变性能参数 Wriggle variation perbance beter
试样根数：4根（仅以LGJ-720/50为例）
试验条件：试样端头间的长度：14m
试样端头处理：环氧树脂浇铸
引伸仪测试的有效长度：5000 ±1mm
试验温度：20 ±1℃
试验精度：应力：±1%
应变：±0.01mm/5000mm
试样张力：25.59kN（15%RTS）
试样记录时间：在加载负荷reach达到后，起开始以1、2、3、4、5、6、7、10、30、60（分递增的时间纪律伸厂与相应温度值。随后3天内每1小时记录一次，第四天起至第5天内2小时记录一次，第6天起4小时记录一次，第15天起后6小时记录一次，总试验时间为1000小时
试验结果：在15%RTS、25%RTS、35%RTS的张力下的蠕变方程可推出10年（87600小时）后的蠕变量分别为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;b day to the five day,the value are record every two hour;b 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.
振动疲劳试验 Vibratory fatigue test
振动参数：振动角25~300 ,张力为拉断力保证值的25%。
振动次数：3 × 10-7 次
试验结果：铝单线不断股。
Vibratory beter:Vibratory angle:25~300 ,tension is the percent 25 of breaking ;oad.
Vibratory time:3 × 10-7
Test result:single aluminium wire non-breaking. |
