大禹城邦工程临时供电方案.doc

临时供电方案

一．    本工程包括地下一层，底框两层，三层以上为砖混
由于落地面积大，需三台吊车。
根据安全用电要求采用三相五线制即TN---S系统，实行三级配电、两级保护。具体是总电源箱   分电源箱   开关箱。总电源箱和分电源箱作接地保护。分电源箱和开关箱设漏电保护器。漏电保护器应定期检查是否处于漏电保护状态。保护零线严禁通过任何开关；保护零线除了从总配电箱电源侧的零线引出外，在任何地方不得与工作零线有电气连接。
二．    总电源箱设在甲方给定电源处，分电源箱共三台
在吊车附近，开关箱设在具体设备附近，实行一机、一闸、一漏、一箱、一锁。严禁同一漏电保护器控制多台设备。
三．    总电源箱内采用保护配电线路
Temporary power supply scheme

1. The project includes ground floor, the bottom frame two, three or more for the brick
As the landing area, take three cranes.
Under the safe use of electricity requires a three-phase five-wire system that TN --- S system, a three-level power distribution, two-stage protection. Specific points of the total power supply box box switch box. The total power supply box and the sub power supply box for ground protection. Sub-power box and switch box located leakage protection. Leakage protection devices should be regularly inspected for leakage protection in the state. Protection of the zero line and strictly prohibit any switch; protection from the zero line of the main distribution box in addition to the zero line leads to the power side of things, can not work anywhere there is electrical connection zero line.
2. The total power box located in the Party given the power supply, power supply box of three sub-
In the cable car near the switch box located in the vicinity of specific equipment, the implementation of a machine, a gate, a drain, a box, with a lock. The same non-leakage protection control multiple devices.
3. The total power supply box used to protect distribution line