GB/T50417-2017：煤矿井下供配电设计规范

GBT50417-2017······1

1 总则······9

2 术语和符号······10

2.1 术语······10

2.2 符号······12

3 井下供配电系统与电压等级······14

4 井下电力负荷统计与计算······17

5 井下电缆选择与计算······19

5.1 电缆类型选择······19

5.2 电缆安装及长度计算······19

5.3 电缆截面选择······21

6 井下主变电所······22

6.1 变电所位置选择及设备布置······22

6.2 设备选型及主接线方式······24

7 采区供配电······26

7.1 采区变电所······26

7.2 采区配电······27

7.3 采区线网······27

8 井下电气设备保护及接地······29

8.1 电气设备保护······29

8.2 电气设备接地······30

9 井下照明······33

本规范用词说明······36

附:条文说明······37

1 总则······40

3 井下供配电系统与电压等级······41

5 井下电缆选择与计算······43

5.1 电缆类型选择······43

5.2 电缆安装及长度计算······44

6 井下主变电所······46

6.1 变电所位置选择及设备布置······46

7 采区供配电······47

7.1 采区变电所······47

8 井下电气设备保护及接地······48

8.1 电气设备保护······48

8.2 电气设备接地······52