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
