核电站仪控开关触点接触失效分析  

Analysis on Contact Failure of Instrument and Control Switch in Nuclear Power Plant

作　　者：石颉[1] 姚建林[1] 王永年 施海宁[1] 涂丰盛 

机构地区：[1]苏州热工研究院有限公司,江苏苏州215004 [2]大亚湾核电运营管理有限公司,广东深圳518124

出　　处：《低压电器》2009年第9期57-60,共4页Low Voltage Apparatus

摘　　要：进行了核电站仪控开关触点接触失效分析。应用NIUSB-6211型多功能DAQ模块、辅助电路和LabView软件,研制了能自动跟踪接触电阻随电流增大的变化趋势的测量装置。该测量装置配合电子扫面显微镜和X射线能谱分析,可观察触点表面的形貌以及分析微区成分,从而确定仪控开关接触系统失效的机理。The contact failure of instrument ＆ control switch in nuclear power plant was analyzed. A measure device which can automatically trace variable trend of contact resistance to cUrrent increase was developed by NI USB-6211 DAQ module, assistanT circuits and LabVIEW software. The scanning electron microscopy（SEM） and X-ray energy dispersive analysis system were used to observe the microcosmic appearance and analyze the component of contact, so the contact failure reasons was confirmed.

关 键 词：接触电阻 失效分析 数据采集 

分 类 号：TM501.3[电气工程—电器]