1、The distance between cable centers of singal-core cables laid in parallel: cross-sectional area of corductor≤185mm2 2times of the cable diameter cross-sectional area of conductor≥240mm2; 90mm.
2、Ambient air temperature: 30℃
3、Max.continous operating temperature of conductor: 90℃.
不同環境溫度下載流量的修正系數:
Current carrying rating factors for different ambient air temperature:
直埋敷設
1、單芯電纜不接觸敷設時電纜中心距離為電纜直徑的 2 倍。 2、土壤溫度:25℃。
3、導體的長期***高工作溫度:90℃。
4、土壤熱阻系數:1.0℃ .m/W。
5、直埋深度:0.7m
Direct in the ground
1、The single-core cables are installed separately, the
distance between the cable center is 2 times of the cable Diameter.
2、Soil temperature: 25℃
3、Max.continous operating temperature of conductor: 90℃. 4、Thermal resistivity of soil: 1.0℃.m/W.
5、Depth of Direct-Buried: 0.7m
不同土壤溫度下載流量的修正系數:
Current carrying rating factors for different soil temperature: