建筑电气设计中几个问题的讨论

Discussion on Some Problems in Building Electric Design

分析了建筑电气设计中几个常见问题:低压配电系统上级配电柜中为下级配电箱供电的分开关与下级配电箱主开关不应属于上下级保护电气,不必强调两开关选择性配合;大整定值保护开关为小负荷配电的电缆选取方法;某些建筑按照柱距设置点型感烟探测器,能满足探测器保护半径要求,但不一定能满足规范要求。

This article analyses some common problems in building electric design. The sub-switch supplying power for lower distribution box in upper distribution cabinet in the lower voltage distribution system is not the upper and lower protection electronic with the main switch of lower distribution box, so it is unnecessary to emphasize the selective coordination between the two switches. The cable of low-load distribution is selected on the basis of the large protection switch. In some buildings, the spot-type smoke detectors are installed according to the column spacing, which can meet the demand of protection radius of detectors, but maybe cannot meet the de- mand of regulars.