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[低压力缆] 假定直径算外护套厚度,求指导
P:2023-06-13 21:37:40
1
按照GB/T:12706.1-2020,附录1里面的介绍,算一下护套厚度,但是跟别人算出来有出入,望指导。下面是我的算法。
举例1:YJV-1kV-4*150
1.导体假设直径:查表得150假设直径=13.8mm
2.绝缘线芯假设直径:绝缘线芯假设直径=13.8+2*1.4=16.6mm
3.缆芯直径:4芯缆芯直径=2.42*16.6=40.172mm,修约=40.2mm
4.外护套厚度=0.035*40.2+1.0=2.407,修约=2.4
举例2:YJV22-1kV-4*150
1.导体假设直径:查表得150假设直径=13.8mm
2.绝缘线芯假设直径:绝缘线芯假设直径=13.8+2*1.4=16.6mm
3.缆芯直径:4芯缆芯直径=2.42*16.6=40.172mm,修约=40.2mm
4.内衬层:缆芯直径>40mm,内衬层=40.2+2*0.6=41.4mm
5.铠装层:铠装前外径为30-70之间,钢带厚度取0.5mm,铠装层=41.4+4*0.5=43.4mm
6.护套厚度:=0.035*43.4+1.0=2.519,修约=2.5mm
second-hand machinery - 二手机械,二手设备 (1) 投诉
P:2023-06-14 21:36:01
10
举例:YJV-8.7/15kV-3*300
1.导体假设直径:查表得300假设直径=19.5mm
2.绝缘线芯假设直径:绝缘线芯假设直径=19.5+2*4.5+3=31.5mm
3.金属屏蔽增加:金属屏蔽标称截面积=1*0.1*40=4mm,查表得增加值=0.5
绝缘线芯加增加值=31.5+0.5=32mm
4.缆芯直径:3芯缆芯直径=2.16*32=69.12mm,修约=69.1mm
5.内衬层:69.1+2*0.6=70.3mm
6.外护套厚度=0.035*70.3+1.0=3.4605,修约=3.5mm
举例:YJV22-8.7/15kV-3*300
1.导体假设直径:查表得300假设直径=19.5mm
2.绝缘线芯假设直径:绝缘线芯假设直径=19.5+2*4.5+3=31.5mm
3.金属屏蔽增加:金属屏蔽标称截面积=1*0.1*40=4mm,查表得增加值=0.5
故绝缘线芯加增加值=31.5+0.5=32mm
4.缆芯直径:3芯缆芯直径=2.16*32=69.12mm,修约=69.1mm
5.内衬层(隔离套):隔离套厚度=0.02*69.1+0.6=1.982,修约=2.0
隔离套外径=69.1+2*2.0=73.1mm
6.钢带:>70,厚度取0.8mm,钢带外径=73.1+4*0.8=76.3mm
6.外护套厚度=0.035*76.3+1.0=3.6705,修约=3.7mm
circuit-switching - 电路开关,电路交换 (0) 投诉
P:2023-06-15 07:44:28
12
ybh202208:我又算了一个中压电缆的,各位大佬再帮我看看是否正确,
举例:YJV-8.7/15kV-3*300
1.导体假设直径:查表得300假设直径=19.5mm
2.绝缘线芯假设直径:绝缘线芯假设直径=19.5+2*4.5+3=31.5mm
3.金属屏蔽增加:金属屏蔽标称截面积=1*0.1*40=4mm,查表得增加值=0.5
绝缘线芯加增加值=31.5+0.5=32mm
4.缆芯直径:3芯缆芯直径=2.16*32=69.12mm,修约=69.1mm
5.内衬层:69.1+2*0.6=70.3mm
6.外护套厚度=0.035*70.3+1.0=3.4605,修约=3.5mm
举例:YJV22-8.7/15kV-3*300
1.导体假设直径:查表得300假设直径=19.5mm
2.绝缘线芯假设直径:绝缘线芯假设直径=19.5+2*4.5+3=31.5mm
3.金属屏蔽增加:金属屏蔽标称截面积=1*0.1*40=4mm,查表得增加值=0.5
故绝缘线芯加增加值=31.5+0.5=32mm
4.缆芯直径:3芯缆芯直径=2.16*32=69.12mm,修约=69.1mm
5.内衬层(隔离套):隔离套厚度=0.02*69.1+0.6=1.982,修约=2.0
隔离套外径=69.1+2*2.0=73.1mm
6.钢带:>70,厚度取0.8mm,钢带外径=73.1+4*0.8=76.3mm
6.外护套厚度=0.035*76.3+1.0=3.6705,修约=3.7mm
对的。YJV-8.7/15kV-3*300的内衬层是计算用,实际生产不需要。