线缆电气特性基础知识.docxVIP

线缆电气特性基础知识

目录

1.线缆电气特性基础知识概述................................3

1.1线缆的定义与分类.....................................4

1.2线缆电气特性的重要性.................................5

2.线缆的基本电气特性......................................6

3.线缆的传输特性..........................................7

3.1传输线方程...........................................8

3.2传输线特性阻抗.......................................9

3.3行波原理............................................10

3.4反射与波陷..........................................11

3.4.1反射的基本概念..................................13

3.4.2反射现象的产生条件..............................13

4.线缆的耐受与性能测试...................................14

4.1线缆的机械耐受......................................15

4.2线缆的电气性能测试..................................16

4.2.1电阻测试........................................18

4.2.2电容与电感测试..................................19

4.2.3传输线特性阻抗测试..............................20

4.2.4反射测试........................................21

4.3线缆的寿命评估......................................22

5.线缆的选型与应用.......................................24

5.1用户需求分析........................................25

5.2工作环境与应用场景..................................26

5.3线缆选择标准........................................27

5.4线缆设计与优化......................................28

6.行业标准与规范.........................................30

6.1IEC标准介绍.........................................31

6.2国家标准介绍........................................31

6.3行业内应用规范......................................32

7.线缆电气特性的影响因素.................................33

7.1材料特性............................................34

7.2结构设计............................................35

7.3环境因素............................................37

8.线缆电气特性的测试与验证...............................37

8.1实验室测试..........................................39

8.2现场测试............................................40

8.3测试仪器与设备......................................42

9.线缆电气特性的应用案例...........................