GBT50417-2017······1

1 總則······9

2 術語和符號······10

2.1 術語······10

2.2 符號······12

3 井下供配電系統(tǒng)與電壓等級······14

4 井下電力負荷統(tǒng)計與計算······17

5 井下電纜選擇與計算······19

5.1 電纜類型選擇······19

5.2 電纜安裝及長度計算······19

5.3 電纜截面選擇······21

6 井下主變電所······22

6.1 變電所位置選擇及設備布置······22

6.2 設備選型及主接線方式······24

7 采區(qū)供配電······26

7.1 采區(qū)變電所······26

7.2 采區(qū)配電······27

7.3 采區(qū)線網(wǎng)······27

8 井下電氣設備保護及接地······29

8.1 電氣設備保護······29

8.2 電氣設備接地······30

9 井下照明······33

本規(guī)范用詞說明······36

附:條文說明······37

1 總則······40

3 井下供配電系統(tǒng)與電壓等級······41

5 井下電纜選擇與計算······43

5.1 電纜類型選擇······43

5.2 電纜安裝及長度計算······44

6 井下主變電所······46

6.1 變電所位置選擇及設備布置······46

7 采區(qū)供配電······47

7.1 采區(qū)變電所······47

8 井下電氣設備保護及接地······48

8.1 電氣設備保護······48

8.2 電氣設備接地······52