【摘要】 高职院校的计算机房利用率高,开机时间长,夏天经常发生跳闸现象,查时零线烫手,温度几乎达到70度。经实测发现,大多数老机房习惯将零线截面选为相线截面的0.5倍;新机房一般将零线截面放宽到相线截面的1.5倍。为了解决零线发热及较准确选择零线截面的问题,课题组对某大型机房做了多次实测,经分析测量波形,提出了零线截面积要选取为相线截面的三倍,才能确保安全可靠。更多还原

【Abstract】 In the traditional Computer room, used to be the zero line cross section selected phase section 0.5 to 1 times（fuzzy choice）;Now the computer room of common power supply mode for uninterruptible power supply（UPS）, According to the experience, In the computer room of capacitive load based, suggestions will be zero line UPS three-phase input size relaxed 1.5times to phase line diameter of 1.2 ^experience. In this situation the two zero wire diameter selection based on the basis of data analysis, give some reasons.更多还原