Klicken Sie,um das Format des Titel-Masters zu bearbeiten.,Klicken Sie,um die Textformatierung des Masters zu bearbeiten.,Zweite Ebene,Dritte Ebene,Konferenz Jurata 2009,2007 DEHN+SHNE/protected by ISO 16016,2007 DEHN+SHNE/protected by ISO 16016,Klicken Sie,um das Format des Titel-Masters zu bearbeiten.,Klicken Sie,um die Textformatierung des Masters zu bearbeiten.,Zweite Ebene,Dritte Ebene,Konferenz Jurata 2009,单击此处编辑母版标题样式,*,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Konferenz Jurata 2009,A circuit is,intrinsically safe,if,no spark,and,thermal effect,which occur under defined experimental conditions(including normal operation and certain fault conditions),can,ignite,a certain,explosive atmosphere,.,如果一个电路在某实验条件下,(,包括正常工作和故障情形,),不会产生能导致爆炸气体点火的闪络和温度变化,这样的电路是本质安全的,.,Measuring and control technology,communication technology,测控技术,通信技术,Basic principle:/,基本原则,Application:/,应用,Intrinsic safetyEx i in accordance with EN 60 079-11,2019-01,本质安全电路,EX i,根据,EN 60079-11,2019-01,Konferenz Jurata 2009,“Lightning is,not,intrinsically safe!“,雷击不是本质安全,Konferenz Jurata 2009,1.Lightning as an ignition source,/,雷击为点火源一种,2.Lightning protection systems in accordance with EN 62305 in hazardous areas,根据,62305,危险区域防雷系统,3.Design of intrinsically safe circuits,本质安全电路设计,4.Selection of surge protective devices,电涌保护器选型,a)with galvanic isolation,/,电隔离,b)without galvanic isolation/,非电隔离,Konferenz Jurata 2009,1.Lightning as an ignition source,/,雷击为点火源一种,2.Lightning protection systems in accordance with EN 62305 in hazardous areas,根据,62305,危险区域防雷系统,3.Design of intrinsically safe circuits,本质安全电路设计,4.Selection of surge protective devices,电涌保护器选型,a)with galvanic isolation,/,电隔离,b)without galvanic isolation/,非电隔离,Konferenz Jurata 2009,EN 1127-1:2019“Explosive atmospheres-Explosion prevention and protection-Part 1:Basic concepts and methodology“,EN 1127-1:2019“,爆炸环境,-,防爆及保护,-,第,1,部分,:,基本概念及方法,The following possible ignition sources are specified in the standard:,标准中列举了以下可能的点火源,:,-Flames and hot gases/,明火及高温气体,-Hot surfaces,/,高温表面,-Mechanically generated sparks/,机械引起的火星,-Elecrical apparatus,/,电器设备,-Stray electric currents,/,杂散电流,-Static electricity/,静电,-Lightning/,雷击,-Electromagnetic waves/,电磁波,-Ionising radiation,/,离子辐射,-Ultrasonics/,超音波,Konferenz Jurata 2009,Control room,/,控制室,Looking for Sources of Ignitions,确定点火源,Non-hazardous area,Hazardous area/,危险区域,1 IN 2,I.S.Barrier/安全栅,explosion protection zone 0,防爆分区,0,explosion protection zone 1,2,防爆分区,1,2,S1,Konferenz Jurata 2009,Control room/,控制室,Looking for Sources of Ignitions,确定点火源,Non-hazardous area,Hazardous area,/,危险区域,1 IN 2,I.S.Barrier/安全栅,explosion protection zone 0,防爆分区,0,explosion protection zone 1,2,防爆分区,1,2,S1,Konferenz Jurata 2009,Control room,/,控制室,Looking for Sources of Ignitions,确定点火源,Non-hazardous area,Hazardous area,/,危险区域,1 IN 2,I.S.Barrier/安全栅,explosion protection zone 0,防爆分区,0,explosion protection zone 1,2,防爆分区,1,2,S1,Konferenz Jurata 2009,Control room,/,控制室,Looking for Sources of Ignitions,确定点火源,Non-hazardous area,Hazardous area/,危险区域,1 IN 2,I.S.Barrier/安全栅,explosion protection zone 0,防爆分区,0,explosion protection zone 1,2,防爆分区,1,2,S1,Konferenz Jurata 2009,Explosion prevention and protection,Basic concepts and methodology DIN EN 1127-1,2019,EN 1127-1:2019“,爆炸环境,-,防爆及保护,-,第,1,部分,:,基本概念及方法,5 Elements of risk assessment,风险评估要素,5.3.8 Lightning,雷击,If,lightning,strikes,in an explosive atmosphere,ignition,will,always occur,.Moreover,there is also a possibility of ignition due to the high temperature reached by lightning conductors.,如果雷电击中爆燃性气体,点火总是不可避免会发生,.,而且,雷击导体上产生的高温，其导致点火的可能性始终存在,.,Large currents flow from where the lightning strikes and these currents can produce,sparks,in the vicinity of the,point of impact,.,当大电流流过时,同样会在相邻接点之间产生跳火,.,Konferenz Jurata 2009,Explosion prevention and protection,Basic concepts and methodology DIN EN 1127-1,2019,EN 1127-1:2019“,爆炸环境,-,防爆及保护,-,第,1,部分,:,基本概念及方法,5 Elements of risk assessment,风险评估要素,5.3.8 Lightning,雷击,Even in the absence of lightning strikes,thunderstorms can cause,high induced voltages,in equipment,protective systems and components.,即使没有雷击,雷暴也会在设备,保护系统和器件上产生很高的感应电压,For protective measures against ignition hazards due to lightning,see 6.4.8.,雷击点火危害的防护措施详见,6.4.8,Konferenz Jurata 2009,Lightning as an ignition source in accordance with,EN 1127-1(6.4.8),根据,EN 1127-1(6.4.8),雷击作为点火源,If hazards due to lightning have been identified,the following specific requirements for equipment,protective systems and components,shall,be complied with:,All categories:Installations,shall,be protected,by the appropriate lightning protection measures.,如果雷击导致的危害能确定,紧随的对设备,保护系统和器件的详细需求要符合,:,所有类别,:,装置需受适当的防雷措施保护,.,The,effects,of lightning occurring outside zones 0 and 20 from damaging,zones 0 and 20 shall be prevented,e.g.,overvoltage protection systems,could be installed at appropriate places.,雷击发生在,0,区和,20,区且带来的损害必须被避免,如过电压保护系统可安装在适当的位置,.,Konferenz Jurata 2009,Lightning as an ignition source in accordance with,EN 1127-1(6.4.8),根据,EN 1127-1(6.4.8),雷击作为点火源,These requirements shall