中煤科工达州雷音隧道施工用电安全专项方案编制：复核：审核：二零一七年六月达州雷音隧道施工供电专项方案隧道施工用电安全专项方案目录1编制依据........................................................................................................12工程概况........................................................................................................13施工方案........................................................................................................23.1用电负荷计算.............................................................................................................23.2供配电系统方案...........................................................................................................3.3电流计算及电缆选择...............................................................................................153.4高压进洞方案...........................................................................................................164施工安全措施..............................................................................................174.1接地保护系统...........................................................................................................174.2洞内电气设备三级配电设置...................................................................................184.3设置检漏继电器.......................................................................................................194.4接地与防雷...............................................................................................................194.5供电系统的“三专、两闭锁”...............................................................................204.6备用电源..................................................................................................................214.7电气设备的使用和维护...........................................................................................214.8电气设备防爆性能的检查与处置...........................................................................224.9瓦斯隧道内电缆的选用...........................................................................................224.9.1隧道内电缆选用应符合下列规定....................................................................224.9.2低压动力电缆的选用........................................................................................224.9.3隧道内高压电缆的选用....................................................................................234.10电缆的敷设.............................................................................................................234.11安全电压的使用.....................................................................................................234.12隧道内用电安全标示标牌.....................................................................................234.13接地电阻的测定及安全注意事项.........................................................................244.14移动式隔爆变压器安装及使用注意事项.............................................................244.15机电设备和电缆的验收及检查...............................................................................255电工及用电人员要求..................................................................................256瓦斯隧道照明系统布置.........................................................................
