最新消息: USBMI致力于为网友们分享Windows、安卓、IOS等主流手机系统相关的资讯以及评测、同时提供相关教程、应用、软件下载等服务。

线缆极限允许载流量参数

IT圈 admin 30浏览 0评论

2024年5月30日发(作者:回宏峻)

导线型号

LGJ-16

LGJ-25

LGJ-35

LGJ-50

LGJ-70

LGJ-95

LGJ-120

LGJ-150

LGJ-185

LGJ-240

环境温度

35℃

92

114

154

184

233

290

334

391

448

536

40℃

85

105

141

170

214

267

307

360

413

494

1

配网线路及设备现场规程

附录6:

油浸纸绝缘电缆极限允许载流量参数表

敷设条件

缆型号规格 ZLQ20-3*50 ZLQ20-3*70 ZLQ20-3*95 ZLQ20-3*120 ZLQ20-3*150 ZLQ20-3*185 ZLQ20-3*240

直埋地中① 导体温度60℃,环境I I I I I =I0·K1·K2·K3 I I

温度30℃,校正系数K1取0.926② 华南=I0·K1·K2·K=I0·K1·K2·K3 =I0·K1·K2·K3 =I0·K1·K2·K3 =245*0.926*1.0 =I0·K1·K2·K3 =I0·K1·K2·K3

地区土壤热阻系数80℃·cm/w,校正系3 =150*0.926 =185*0.926*1.0*1=215*0.926*1.0*1*1.0 =275*0.926*1.0*1=325*0.926*1.0

数K2取1. 0③ 直埋地1根,校正系数K3=130*0.926 *1.0*1.0 .0 .0 =226(A) .0 *1.0

取1. 0 *1.0*1.0 =138.9(A) =171(A) =199(A) =254.6(A) =301(A)

=120.3(A)

在空气中① 导体温度60℃,环境温 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2

度40℃,校正系数K1取0.756② 多根并=120*0.756 =145*0.756 =180*0.756*0.8 =205*0.756*0.8 =235*0.756*0.8 =270*0.756*0.8 =320*0.756*0.8

列敷设(s=d,6根),校正系数K2取0.80 *0.8 *0.8 =109(A) =124(A) =142.1(A) =163.3(A) =193.5(A)

=73(A) =87.7(A)

在沟(管*1)中① 导体温度60℃, I I I I I =I0·K1·K2·K3 I I =I0·K1·K2·K3

环境温度40℃,校正系数K1取0.756② =I0·K1·K2·K=I0·K1·K2·K3 =I0·K1·K2·K3 =I0·K1·K2·K3 =235*0.756*1.0 =I0·K1·K2·K3 =320*0.756*1.0

单根并列敷设(s=1d,1根),校正系数3 =145*0.756 =180*0.756*1.0*0=205*0.756*1.0*0*0.95 =270*0.756*1.0*0*0.95

K2取1.0③ 电缆穿管时 (1根),校正系=120*0.756 *1.0*0.95 .95 .95 =168.7(A) .95 =229.8(A)

数K3取0.95 *1.0*0.95 =104.1(A) =130(A) =147(A) =193.9(A)

=86(A)

在沟(管*4)中① 导体温度60℃, I I I I I =I0·K1·K2·K3 I I

环境温度40℃,校正系数K1取0.756② =I0·K1·K2·K=I0·K1·K2·K3 =I0·K1·K2·K3 =I0·K1·K2·K3 =235*0.756*0.9*0.=I0·K1·K2·K3 =I0·K1·K2·K3

多根并列敷设(s=2d,4根),校正系数3 =145*0.756 =180*0.756*0.9*0=205*0.756*0.9*095 =270*0.756*0.9*0=320*0.756*0.9

K2取0.90③ 电缆穿管时 (4根),校正系=120*0.756 *0.9*0.95 .95 .95 =151.9(A) .95 *0.95

数K3取0.95 *0.9*0.95 =93.7(A) =116(A) =133(A) =174.5(A) =206.8(A)

=78(A)

2

2024年5月30日发(作者:回宏峻)

导线型号

LGJ-16

LGJ-25

LGJ-35

LGJ-50

LGJ-70

LGJ-95

LGJ-120

LGJ-150

LGJ-185

LGJ-240

环境温度

35℃

92

114

154

184

233

290

334

391

448

536

40℃

85

105

141

170

214

267

307

360

413

494

1

配网线路及设备现场规程

附录6:

油浸纸绝缘电缆极限允许载流量参数表

敷设条件

缆型号规格 ZLQ20-3*50 ZLQ20-3*70 ZLQ20-3*95 ZLQ20-3*120 ZLQ20-3*150 ZLQ20-3*185 ZLQ20-3*240

直埋地中① 导体温度60℃,环境I I I I I =I0·K1·K2·K3 I I

温度30℃,校正系数K1取0.926② 华南=I0·K1·K2·K=I0·K1·K2·K3 =I0·K1·K2·K3 =I0·K1·K2·K3 =245*0.926*1.0 =I0·K1·K2·K3 =I0·K1·K2·K3

地区土壤热阻系数80℃·cm/w,校正系3 =150*0.926 =185*0.926*1.0*1=215*0.926*1.0*1*1.0 =275*0.926*1.0*1=325*0.926*1.0

数K2取1. 0③ 直埋地1根,校正系数K3=130*0.926 *1.0*1.0 .0 .0 =226(A) .0 *1.0

取1. 0 *1.0*1.0 =138.9(A) =171(A) =199(A) =254.6(A) =301(A)

=120.3(A)

在空气中① 导体温度60℃,环境温 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2 I =I0·K1·K2

度40℃,校正系数K1取0.756② 多根并=120*0.756 =145*0.756 =180*0.756*0.8 =205*0.756*0.8 =235*0.756*0.8 =270*0.756*0.8 =320*0.756*0.8

列敷设(s=d,6根),校正系数K2取0.80 *0.8 *0.8 =109(A) =124(A) =142.1(A) =163.3(A) =193.5(A)

=73(A) =87.7(A)

在沟(管*1)中① 导体温度60℃, I I I I I =I0·K1·K2·K3 I I =I0·K1·K2·K3

环境温度40℃,校正系数K1取0.756② =I0·K1·K2·K=I0·K1·K2·K3 =I0·K1·K2·K3 =I0·K1·K2·K3 =235*0.756*1.0 =I0·K1·K2·K3 =320*0.756*1.0

单根并列敷设(s=1d,1根),校正系数3 =145*0.756 =180*0.756*1.0*0=205*0.756*1.0*0*0.95 =270*0.756*1.0*0*0.95

K2取1.0③ 电缆穿管时 (1根),校正系=120*0.756 *1.0*0.95 .95 .95 =168.7(A) .95 =229.8(A)

数K3取0.95 *1.0*0.95 =104.1(A) =130(A) =147(A) =193.9(A)

=86(A)

在沟(管*4)中① 导体温度60℃, I I I I I =I0·K1·K2·K3 I I

环境温度40℃,校正系数K1取0.756② =I0·K1·K2·K=I0·K1·K2·K3 =I0·K1·K2·K3 =I0·K1·K2·K3 =235*0.756*0.9*0.=I0·K1·K2·K3 =I0·K1·K2·K3

多根并列敷设(s=2d,4根),校正系数3 =145*0.756 =180*0.756*0.9*0=205*0.756*0.9*095 =270*0.756*0.9*0=320*0.756*0.9

K2取0.90③ 电缆穿管时 (4根),校正系=120*0.756 *0.9*0.95 .95 .95 =151.9(A) .95 *0.95

数K3取0.95 *0.9*0.95 =93.7(A) =116(A) =133(A) =174.5(A) =206.8(A)

=78(A)

2

发布评论

评论列表 (0)

  1. 暂无评论