《CAT安全等级分类》由会员分享,可在线阅读,更多相关《CAT安全等级分类(1页珍藏版)》请在金锄头文库上搜索。
1、根据国际电子电工委员会IEC1010-1的定义,把工业工作的区域分为四个等级,分别是CATI, CATII ,CATIII,CATIV,每个等级定义不用。测量类别CATI电子设备负载CATII单项接收的负载,电气设备负载CATIII三相电的配电,分配端,包括单项照明电CATIV三相电落地的总输入/接入端口,任何在户外的导体在CATI,CATII区域里,最高受到600V的电压冲击,仪器不会对人体安全产生威胁。确保安全使用测试仪器,IEC60664按照不同测试测试场合建立了由CAT I CAT IV的安全等级标准。CAT的等级越高,表明仪器在此电气环境下能承受的瞬间过电压的能力越大。必须避免在CA
2、T等级要求高的电气环境 使用低等级的测试仪器,否则对人员和仪器的安全极为不利,甚至产生严重的后果。CAT I:在变压器或类似设备的二次电气线路端进行测试。CAT II:对通过电源线连接到电源插座的用电设备的一次电气线路进行测试。CAT III:直接连接到配电设备的大型用电设备(固定设备)的一次线路及配电设备到插座之间的电力线路。CATV:任何室外供电线路或设备的测试。To ensure safe operation of measurement devices, IEC 61010 establishes safety standards for various electrical envi
3、ronments, categorized as CAT I to CAT IV, and called measurement categories. These are defined as follows.CAT I: Secondary electrical circuits connected to an electrical outlet through a transformer or similar device.CAT II: Primary electrical circuits in equipment connected to an AC electrical outl
4、et by a power cord (portable tools, household appliances, etc.).CAT III: Primary electrical circuits of heavy equipment (fixed installations) connected directly to the distribution panel, and feeders between the distribution panel and outlets.CAT IV: The circuit from the service drop to the service entrance, then to the power meter and to the primary overcurrent protection instrument.