YJV(3x120+2x70)以上还有几种电缆?载流量是多少?

2024年12月02日 06:30
有4个网友回答
网友(1):

有更大的一般要定做,比如有(3X300,3X400,3X500,3X630,3X800,3X1200,3X1600,3X2000。)载流量铝线一般一平方是4A左右,铜线一般是6A左右。

网友(2):

本节口诀对各种绝缘线(橡皮和塑料绝缘线)的载流量(安全电流)不是直接指出,而是”截面乘上一定的倍数”来表示,通过心算而得。由表5
3可以看出:倍数随截面的增大而减小。
“二点五下乘以九,往上减一顺号走”说的是2.5mm’及以下的各种截面铝芯绝缘线,其载流量约为截面数的9倍。如2.5mm’导线,载流量为
2.5×9=22.5(a)。从4mm’及以上导线的载流量和截面数的倍数关系是顺着线号往上排,倍数逐次减l,即4×8、6×7、10×6、16×5、
25×4。
“三十五乘三点五,双双成组减点五”,说的是35mm”的导线载流量为截面数的3.5倍,即35×3.5=122.5(a)。从50mm’及以上的导线,其载流量与截面数之间的倍数关系变为两个两个线号成一组,倍数依次减0.5。即50、70mm’导线的载流量为截面数的3倍;95、
120mm”导线载流量是其截面积数的2.5倍,依次类推。

网友(3):

芯数
2芯、3芯、4芯、3+1芯、3+2芯、4+1芯、5芯 单芯
敷设 空气中 土壤中
Pω=1.0k.m/W 空气中 土壤中
Pω=1.0k.m/W
单芯电缆排列方式 ○
○ ○ ○○○ ○
○ ○ ○○○
线芯材质 铜
Cu

Al 铜
Cu 铝
Al 铜
Cu 铝
Al 铜
Cu 铝
Al 铜
Cu 铝
Al 铜
Cu 铝
Al
标称截面
(mm2) 1.5 15 -- 22 -- 19 -- 24 -- 27 -- 29 --
2.5 19 15 29 23 25 19 31 24 36 27 38 30
4 26 20 36 30 33 26 41 32 47 35 49 39
6 32 26 47 39 41 34 52 42 58 46 61 50
10 46 35 65 50 57 44 72 55 78 58 83 64
16 60 47 84 65 76 59 95 73 100 76 105 83
25 77 60 110 84 98 76 120 96 130 95 135 105
35 95 74 130 100 115 90 150 115 155 115 160 125
50 115 90 155 120 145 110 180 140 185 140 195 150
70 145 115 195 150 180 140 23 175 225 170 240 185
95 185 140 230 185 225 175 0280 215 270 205 285 222
120 210 165 260 205 260 200 325 250 310 235 325 250
150 245 190 300 230 300 230 375 290 350 265 365 285
185 280 215 335 260 345 270 430 335 395 300 415 320
240 335 260 390 300 410 320 510 395 455 350 480 375
300 375 295 435 340 475 370 585 455 515 395 545 425
400 -- -- -- -- 555 440 690 540 585 455 625 490
500 -- -- -- -- 640 510 800 630 660 520 710 560
630 -- -- -- -- 730 595 920 740 740 590 810 645
800 -- -- -- -- -- 690 -- 860 -- 665 -- 735
环境温度
(℃) 40 25 40 25
线芯最高工作温度
(℃) 70

网友(4):

120以上还有 95 70 50 35 25 15 10 6 4 2.5 1.5 1
就这些了。

我不和你一点一点说了。说白话吧。。国标铜芯电缆一个平方带两个千瓦。自己算吧。

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