電氣設備的漏電保護及接地

字數:22205,頁數:42   附任務書,電子機電開題報告

目   錄             
第一章  安全電流和安全電壓 ...............................................13
1.1安全用電和安全電壓.................................................... 13
1.2  安全電壓............................................................ 15
第二章電氣接地 ..........................................................18
2.1接地裝置 ..............................................................18
2.2保護接地.............................................................. 18
2.3不等長接地體技術 ......................................................19
2.4接觸電勢和接觸電壓 ....................................................20
2.5跨步電勢和跨步電壓.................................................... 21
2.6中性點、零點和中性線、零線............................................ 21
2.7接地和接零............................................................ 21
2.8防雷接地.............................................................. 23
第三章電氣接地的作用及分類.............................................. 25
3.1電氣接地的作用 ........................................................25
3.2 電氣接地的分類 .......................................................25
3.3 電氣接地的范圍 .......................................................27
3.4電氣設備接地技術原則 ..................................................28
3.5接地裝置的技術要求 ....................................................28
3.6根據電壓大小采取相應接地.............................................. 31
3.7 接地系統.................................................... .........36
3.8 地線反擊電壓 .........................................................36
第四章  接地電阻的組成及降組..............................................39
4.1接地電阻構成...........................................................39
4.2不等長接地體技術.......................................................40
4.3化學降組劑的應用.......................................................40
4.4接地電阻測量方法.......................................................41
結束語.................................................... ...............42
致  謝................................................................... 42
參考文獻................................................................. 43

摘    要

      電能是現代工業生產的主要能源和動力。電能的輸送的分配既簡單經濟，有利于實現生產過程自動化。因此，電能在現代工業生產及整個國民經濟生活中應用極為廣泛。電能關系到國家財產和人身的安全。加之用之廣泛，因此，找到安全的防事故的使用方法是十分必要的。
關鍵詞： 安全電流;安全電壓;電氣接地

 Electrical equipment and earth leakage protection
Chen Juan
0501 Electrical automation
Abstract: Energy modern industrial production is the major energy and power. The distribution of electric energy transmission is simple economy, conducive to the realization of the production process automation. Therefore, the power in modern industrial production and life in the national economy as a whole is extremely wide application. Energy related to state property and personal safety. In addition to the extensive, therefore, to find safety and accident prevention of the use is necessary. Key words: safety current; security voltage; electrical grounding.