四家施工用电组设计.doc

目录 1编制说明············································2 2工程概况············································2 3主要施工机械设备····································2 4施工用电线路选择····································3 4.1导线选择··········································3 4.2线路敷设··········································4 5用电管理············································5 6 电工················································5 7 安全距离与外电防护··································6 8 供电路线············································7 9 电缆线路············································8 10 配电柜（盘）、配电箱及开关箱·······················8 11 电器装置的选择·····································9 12 使用与维护········································10 13 照明··············································11 14 接地与防雷········································12 15 管理结构图········································14 16 平面布置图········································15 一、 编制说明 1、依据JGJ46-88《施工现场临时用电安全技术规范》。 2、依据地方供电局《低压用户管理规程》。 3、依据供电局提供的箱变500KVA额定容量。 4、用电缺口由施工单位自发电解决，电源供给方式与市电不作切接，为独立电源，所以本方案不列工程量及用电方案。 二、工程概况 司家雨水泵站位于南京江宁滨江经济开发区内，205国道东侧，江宁河西侧河堤边，主要收集205国道两侧圩区6.93平方公里的雨水，设计流量为12m3/S，该泵站 设计等别为Ⅲ级。 工程设计抗震烈度为7度，设计基本地震加速度为0.1g，泵站地基土为粉质粘土，厂区地面设计标高9.50m(吴淞高程系统)。 工程设计包括前池工程、雨水泵室工程、房屋工程、其他附属工程以及由于工程施工引起的原堤防拆建工程。 三、主要施工机械设备 机械设备名称 型 号 数量 功 率 灌注桩机 JPS-15 5 150 泥浆泵 5 110 电焊机 VN-100 4 90KW 弯曲机 GW40 2 10KW 切断机 GQ-50 2 15KW 木工机械 若干 10KW 排水泵 4 30KW 振捣器 PG-501 8 10KW 试验设备 若干 10 KW 照明 若干 30KW 生活 60KW 四、施工用电线路选择 1、导线选择 本工程施工用电由甲方安置200KVA箱变及一台200KVA发电机组作为本工程的施工用电总电源。本工程分二个供电区域。 根据现场机械设备配置情况。 回路I，总功率P1 P1=（150+110+90+10+15+10+30+15+30）*0.8=360KW 同时系数0.8。 导线截面选择 I线=1000*360/1.732*380*0.75＝729A 选用70mm2 Yc中型电缆，其允许持续电流265A233A。 回路Ⅱ，总功率P2 总功率P2=（10+60）*0.8=56KW 同时系数0.8。 导线截面选择 I线=