摘要
介绍了防爆场所特性和常见防爆措施,阐述了IT系统的特点和要求,分析了隔离变压器构成的IT系统,提出在防爆场所,宜优先采用IT系统;在无三相设备的防爆场所,宜优先选用单相隔离变压器构成的IT系统,同时单相末端回路宜采用故障电弧断路器。
The characteristics of explosion-proof sites and common explosion-proof measures are introduced.The characteristics and requirements of IT system are described.The IT system composed of isolation transformer is analyzed.In explosion-proof places,IT systems should be chosen preferentially.In explosion-proof places without three-phase equipment,IT system composed of single-phase isolation transformer should be preferred,and the arc fault circuit interrupter should be used in single-phase terminal circuit.
作者
李慧
邹越华
LI Hui;ZOU Yuehua(CCDI(Suzhou)Exploration&Design Consultant Co.,Ltd.,Suzhou 215000,China;Suzhou Wujiang Construction Review Drawing Co.,Ltd.,Suzhou 215000,China)
出处
《现代建筑电气》
2021年第11期35-38,共4页
Modern Architecture Electric
关键词
电气设计
爆炸危险场所
绝缘故障
IT系统
electrical design
explosion hazardous place
insulation fault
IT system
