Exicircuitsbi德和盛油气站防雷讲座ppt课件

1、 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Surge protection for intrinsically safe circuits本质平安电路电涌维护本质平安电路电涌维护 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021A circuit is intrinsically safe if no spark and thermal effect, which occur under defined experimental con

2、ditions (including normal operation and certain fault conditions), can ignite a certain explosive atmosphere.假设一个电路在某实验条件下假设一个电路在某实验条件下(包括正常任务和缺点情形包括正常任务和缺点情形), 不会产生能导致爆炸气体点火的闪络和温度变化不会产生能导致爆炸气体点火的闪络和温度变化, 这样这样的电路是本质平安的的电路是本质平安的.Measuring and control technology,communication technology测控技术测控技术, 通讯技术通

3、讯技术Basic principle:/ 根本原那么根本原那么Application: / 运用运用Intrinsic safetyEx i in accordance with EN 60 079-11, 2007-01本质平安电路本质平安电路 EX i, 根据根据EN 60079-11, 2007-01 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021“Lightning is not intrinsically safe !“雷击不是本质平安雷击不是本质平安 2007 DEHN + SHNE / protecte

4、d by ISO 16016Konferenz Jurata 20211. Lightning as an ignition source / 雷击为点火源一种雷击为点火源一种 2. Lightning protection systems in accordance with EN 62305 in hazardous areas 根据根据62305 危险区域防雷系统危险区域防雷系统3. Design of intrinsically safe circuits 本质平安电路设计本质平安电路设计4. Selection of surge protective devices 电涌维护器选型电

5、涌维护器选型a) with galvanic isolation / 电隔离电隔离b) without galvanic isolation / 非电隔离非电隔离 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 20211. Lightning as an ignition source / 雷击为点火源一种雷击为点火源一种 2. Lightning protection systems in accordance with EN 62305 in hazardous areas 根据根据62305 危险区域防雷系统危险区域防

6、雷系统3. Design of intrinsically safe circuits 本质平安电路设计本质平安电路设计4. Selection of surge protective devices 电涌维护器选型电涌维护器选型a) with galvanic isolation / 电隔离电隔离b) without galvanic isolation / 非电隔离非电隔离 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021EN 1127-1:2007 “Explosive atmospheres - Explosi

7、on prevention and protection - Part 1: Basic concepts and methodology“EN 1127-1:2007 “爆炸环境爆炸环境-防爆及维护防爆及维护-第第1部分部分: 根本概念及方法根本概念及方法The following possible ignition sources are specified in the standard:规范中列举了以下能够的点火源规范中列举了以下能够的点火源:- Flames and hot gases / 明火及高温气体明火及高温气体- Hot surfaces / 高温外表高温外表- Mechan

8、ically generated sparks / 机械引起的火星机械引起的火星- Elecrical apparatus / 电器设备电器设备- Stray electric currents /杂散电流杂散电流- Static electricity / 静电静电- Lightning / 雷击雷击- Electromagnetic waves / 电磁波电磁波- Ionising radiation / 离子辐射离子辐射- Ultrasonics / 超音波超音波 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021

9、Control room / 控制室控制室Looking for Sources of Ignitions确定点火源确定点火源Non-hazardous areaHazardous area / 危险区域危险区域1 IN 2I.S. Barrier /平安栅平安栅S1 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Control room/ 控制室控制室Looking for Sources of Ignitions确定点火源确定点火源Non-hazardous areaHazardous area / 危险区域危险

10、区域1 IN 2I.S. Barrier /平安栅平安栅S1 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Control room / 控制室控制室Looking for Sources of Ignitions确定点火源确定点火源Non-hazardous areaHazardous area / 危险区域危险区域1 IN 2I.S. Barrier / 平安栅平安栅S1 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Control r

11、oom / 控制室控制室Looking for Sources of Ignitions确定点火源确定点火源Non-hazardous areaHazardous area / 危险区域危险区域1 IN 2I.S. Barrier / 平安栅平安栅S1 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Explosion prevention and protection, Basic concepts and methodology DIN EN 1127 - 1, 2007EN 1127-1:2007 “爆炸环境爆炸

12、环境-防爆及维护防爆及维护-第第1部分部分: 根根本概念及方法本概念及方法5 Elements of risk assessment 风险评价要素风险评价要素5.3.8 Lightning 雷击雷击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. 假设雷电击中爆燃性气体假设

13、雷电击中爆燃性气体, 点火总是不可防止会发生点火总是不可防止会发生. 而且而且, 雷击雷击导体上产生的高温，其导致点火的能够性一直存在导体上产生的高温，其导致点火的能够性一直存在.Large currents flow from where the lightning strikes and these currents can produce sparks in the vicinity of the point of impact. 当大电流流过时当大电流流过时, 同样会在相邻接点之间产生跳火同样会在相邻接点之间产生跳火. 2007 DEHN + SHNE / protected by I

14、SO 16016Konferenz Jurata 2021Explosion prevention and protection, Basic concepts and methodology DIN EN 1127 - 1, 2007EN 1127-1:2007 “爆炸环境爆炸环境-防爆及维护防爆及维护-第第1部分部分: 根根本概念及方法本概念及方法5 Elements of risk assessment 风险评价要素风险评价要素5.3.8 Lightning 雷击雷击Even in the absence of lightning strikes, thunderstorms can c

15、ause high induced voltages in equipment, protective systems and components. 即使没有雷击即使没有雷击, 雷暴也会在设备雷暴也会在设备,维护系统和器件上产生很高的维护系统和器件上产生很高的感应电压感应电压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雷击点火危害的防护措施详见6.4.8 2007 DEHN + SHNE / protected by ISO 16016Konferenz

16、Jurata 2021Lightning as an ignition source in accordance with EN 1127-1 (6.4.8)根据根据EN 1127-1 (6.4.8) 雷击作为点火源雷击作为点火源If hazards due to lightning have been identified, the following specific requirements for equipment, protective systems and components shall be complied with:All categories: Installatio

17、ns shall be protected by the appropriate lightning protection measures.假设雷击导致的危害能确定假设雷击导致的危害能确定, 紧随的对设备紧随的对设备,维护系统和器件的详细维护系统和器件的详细需求要符合需求要符合:一切类别一切类别: 安装需受适当的防雷措施维护安装需受适当的防雷措施维护.The effects of lightning occurring outside zones 0 and 20 from damaging zones 0 and 20 shall be prevented, e.g. overvoltag

18、e protection systems could be installed at appropriate places.雷击发生在雷击发生在0区和区和20区且带来的损害必需被防止区且带来的损害必需被防止, 如过电压维护系如过电压维护系统可安装在适当的位置统可安装在适当的位置. 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Lightning as an ignition source in accordance with EN 1127-1 (6.4.8)根据根据EN 1127-1 (6.4.8) 雷击作为点火源

19、雷击作为点火源These requirements shall be included in the information for use (see section 7).Protective measures against lightning shall not impair cathodic corrosion protection / Ex i measures.这些需求应被包括在运用信息中这些需求应被包括在运用信息中(见第见第7节节)防雷措施不应该减弱阴极防腐维护措施防雷措施不应该减弱阴极防腐维护措施. 2007 DEHN + SHNE / protected by ISO 160

20、16Konferenz Jurata 20211. Lightning as an ignition source / 雷击为点火源一种雷击为点火源一种 2. Lightning protection systems in accordance with EN 62305 in hazardous areas 根据根据62305 危险区域防雷系统危险区域防雷系统3. Design of intrinsically safe circuits 本质平安电路设计本质平安电路设计4. Selection of surge protective devices 电涌维护器选型电涌维护器选型a) wit

21、h galvanic isolation / 电隔离电隔离b) without galvanic isolation / 非电隔离非电隔离 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021control room控制室控制室Lightning and surge protection in accordance withEN 62305雷击及电涌维护雷击及电涌维护,根据根据EN 62305Non-hazardous areaHazardous area measuring and control circuit Ex(

22、i)危险区域测控电路危险区域测控电路3 OUT 41 IN 2BLITZDUCTOR CTmin. 4 mmBLITZDUCTOR BXT BAS EX, BXT ML4 .EXDEHNpipe DPI MD EX 24 M2 REx 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021control room控制室控制室Lightning and surge protection in accordance with EN 62305雷击及电涌维护雷击及电涌维护,根据根据EN 62305Non-hazardous are

23、a3 OUT 41 IN 2BLITZDUCTOR CTmin. 4 mmBLITZDUCTOR BXT BAS EX, BXT ML4 .EXDEHNpipe DPI MD EX 24 M2 RExS1Hazardous area measuring and control circuit Ex(i)危险区域测控电路危险区域测控电路 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 20211. Lightning as an ignition source / 雷击为点火源一种雷击为点火源一种 2. Lightning pr

24、otection systems in accordance with EN 62305 in hazardous areas 根据根据62305 危险区域防雷系统危险区域防雷系统3. Design of intrinsically safe circuits 本质平安电路设计本质平安电路设计4. Selection of surge protective devices 电涌维护器选型电涌维护器选型a) with galvanic isolation / 电隔离电隔离b) without galvanic isolation / 非电隔离非电隔离 2007 DEHN + SHNE / pro

25、tected by ISO 16016Konferenz Jurata 2021Intrinsic safetyEx i in accordance with EN 60 079-11, 2007-01根据根据EN 60079-11,2007-01 本质平安本质平安 EX iSafety barriers are passive networks which isolate intrinsically safe circuits from non-intrinsically safe circuits without galvanic isolation. The installation o

26、f safety barriers allows to use standard instrumentation and installation in the non-intrinsically safe circuit.However, voltages must not exceed 250 V. A major drawback of this safety barrier is its relatively high ohmic resistance which has to be considered for line compensation. Safety barriers a

27、re always installed outside hazardous areas.平安栅为无源网络平安栅为无源网络,用来隔离本质平安电路和非本质平安电路用来隔离本质平安电路和非本质平安电路,经过非电气隔离的方式经过非电气隔离的方式. 允许允许运用规范仪表并安装在非本质平安电路中运用规范仪表并安装在非本质平安电路中. 但是但是, 其电压不能超越其电压不能超越250V, 且本身的高阻性的且本身的高阻性的弱点在线路补偿中必需被思索弱点在线路补偿中必需被思索. 通常平安栅都安装在危险区域外围通常平安栅都安装在危险区域外围.Block diagram of a safety barrier / 平

28、安栅电路图平安栅电路图 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Only safety barriers with galvanic isolation can be used for hazardous zone 0. Earth connection of intrinsically equipment under normal operating conditions is permitted. Different earth potentials will not cause measurement e

29、rrors. The intrinsically circuit and the measuring instrument can have different potentials. Installation time is reduced since equipotential bonding is not required.只需带电隔离的平安栅才干被运用在危险分区只需带电隔离的平安栅才干被运用在危险分区0. 允许正常任务条件下本质设备的接地衔接允许正常任务条件下本质设备的接地衔接. 不同的地电势不会导致丈量误差不同的地电势不会导致丈量误差. 本质电路和丈量设备可具有不同的电势本质电路和丈

30、量设备可具有不同的电势.由于不再需求等电位衔接由于不再需求等电位衔接,安装时间大大减少安装时间大大减少.Block diagram of a safety barrier with galvanic isolation / 带电隔离的平安栅电路图带电隔离的平安栅电路图Intrinsic safetyEx i in accordance with EN 60 079-11, 2007-01根据根据EN 60079-11,2007-01 本质平安本质平安 EX i 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Intri

31、nsic safetyEx i in accordance with EN 60 079-11, 2007-01根据根据EN 60079-11,2007-01 本质平安本质平安 EX iIsolation from intrinsically safe electric equipment / 本质平安电气设备的隔离本质平安电气设备的隔离Isolation has to be ensured: / 隔离必需被确保隔离必需被确保: between the intrinsically safe circuit and the chassis; 本质平安电路与底座之间本质平安电路与底座之间 a.c.

32、 test voltage of at least 500 V rms, 1 min. 交流测试电压至少为交流测试电压至少为500V, 继续继续1分钟分钟between the intrinsically safe and non-intrinsically safe circuit; 本质平安和非本质平安电路之间本质平安和非本质平安电路之间 a.c. test voltage of at least 1500 V rms, 1 min. 交流测试电压至少为交流测试电压至少为1500V, 继续继续1分钟分钟Hazardous area / 危险区域危险区域Non-hazardous area

33、/ 非危险区域非危险区域Resistance thermometer(enlarged)阻性温度计阻性温度计Transducer (associated equipment)变送器变送器(关联设备关联设备) 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 20211. Lightning as an ignition source / 雷击为点火源一种雷击为点火源一种 2. Lightning protection systems in accordance with EN 62305 in hazardous areas 根

34、据根据62305 危险区域防雷系统危险区域防雷系统3. Design of intrinsically safe circuits 本质平安电路设计本质平安电路设计4. Selection of surge protective devices 电涌维护器选型电涌维护器选型a) with galvanic isolation / 电隔离电隔离b) without galvanic isolation / 非电隔离非电隔离 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Minimum discharge capacit

35、y of 10 impulses with 10 kA (8/20 s) each without reducing or negatively affecting the protective function. 最少最少10个冲击个冲击,每次放电电流每次放电电流10kA (8/20 s), 冲击后维护功能不会降冲击后维护功能不会降低或者低或者 劣化劣化.Installation of the SPD into a metal housing and earthing of min. 4 mm Cu SPD应安装在金属箱体内且接地线至少为应安装在金属箱体内且接地线至少为4 mm铜线铜线. S

36、election of surge protective devices Requirements in accordance with EN 60079-14根据根据EN 60079-14 电涌维护器需求及选型电涌维护器需求及选型 Installation of the conductor between SPD and equipment in the metal pipe which is earthed at both ends or use of shielded conductors with a length of max. 1m SPD和金属管道内的设备导线两端应接地或采用最长

37、不超越和金属管道内的设备导线两端应接地或采用最长不超越1米的屏米的屏蔽线蔽线. 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021 Isolation from earth of the intrinsically safe equipment? 本质平安设备能否对地隔离本质平安设备能否对地隔离? Type of protection - Category ia or ib? 防护类别防护类别- ia 或或 ib? Compliance with the maximum permissible values for Lo

38、 and Co 能否满足最大允许的电感电容值能否满足最大允许的电感电容值? Compliance with the maximum values for U0 and I0 能否满足电压和电流的最大值能否满足电压和电流的最大值? Energy coordination of surge protective device and terminal equipment 电涌维护器与终端设备能否能量协调电涌维护器与终端设备能否能量协调?Selection of surge protective devices Requirements in accordance with EN 60079-14根

39、据根据EN 60079-14 电涌维护器需求及选型电涌维护器需求及选型 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021automation device自动化设备safety barrier/ 平安栅平安栅Non-hazardous area /非危险区域Transducer变送器变送器Safety barrier with galvanic isolation Isolation from earth 与地电隔离的平安栅与地电隔离的平安栅Hazardous area/ 危险区域 2007 DEHN + SHNE /

40、 protected by ISO 16016Konferenz Jurata 2021BLITZDUCTOR XT BXT ML4 BD EX 30Isolation from earth ensured !BXT ML4 BD EX 30, 确保对地隔离确保对地隔离Power-frequency voltage strength = 500 V工频电压强度工频电压强度 = 500V(1)(2)(1)(2)(PA) 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021(1)(2)(PA) Safety barrier w

41、ith galvanic isolationProtection with Blitzductor XT BXT ML4 BD EX 30电隔离维护的平安栅电隔离维护的平安栅1 21 2BLITZDUCTOR XTPA(1)(2)isolatorSignal信号信号 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Non-hazardous areaHazardous area measuring and control circuit Ex(i)BD EXTrSe1212BD EX1212signal line /

42、信号线信号线BLITZDUCTOR XTBLITZDUCTOR XTsensor 1)传感器传感器intermeshed earth-termination system/ 网格接地系统网格接地系统1) Insulation strength 500 V a.c.Ensure consistent equipotenital bonding and intermeshing 绝缘强度 500 V, 在保证良好的等电位衔接和网格接地情况下.Summary: Installation of surge protective devices Ex (i)总结总结: 本安型电涌维护器安装本安型电涌维护

43、器安装safetybarrier 1)平安栅平安栅 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Example of use: BXT ML4 BD EX 30, installation into a switchgear cabinet运用举例运用举例: BXT ML4 BD 3X 30, 安装在开关柜内安装在开关柜内Source: TAL PipelineFISCO certificationCertificate of conformity KEMA 06 ATEX 0274 XII 2 (1) G EEx

44、 ia IIC T4/T5/T6 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Example of use: BXT ML4 BD EX 30, Installation into a metal housing运用举例运用举例: BXT ML4 BD EX 30, 安装在金属箱体内安装在金属箱体内FISCO certificationCertificate of conformity KEMA 06 ATEX 0274 XII 2 (1) G EEx ia IIC T4/T5/T6 2007 DEHN + SHN

45、E / protected by ISO 16016Konferenz Jurata 2021FISCO certificationfor intrinsically safe circuits本质平安电路运用本质平安电路运用Certificate of conformity PTB 03 ATEX 2088II 2 (1) G EEx ia IIC T4/T5/T6Example of use: DPI MD EX 24 M 2, Installation into a metal pipe运用举例运用举例: DPI MD EX 24 M 2, 安装在金属管道内安装在金属管道内 2007 D

46、EHN + SHNE / protected by ISO 16016Konferenz Jurata 20211. Lightning as an ignition source / 雷击为点火源一种雷击为点火源一种 2. Lightning protection systems in accordance with EN 62305 in hazardous areas 根据根据62305 危险区域防雷系统危险区域防雷系统3. Design of intrinsically safe circuits 本质平安电路设计本质平安电路设计4. Selection of surge protec

47、tive devices 电涌维护器选型电涌维护器选型a) with galvanic isolation / 电隔离电隔离b) without galvanic isolation / 非电隔离非电隔离 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021Hazardous area Non-hazardous areaTransducer /变送器变送器casting compoundUZRSIOUOUNautomation device自动化设备自动化设备PASafety barrier without galvan

48、ic isolation Earth-bound 非电隔离并接地的平安栅非电隔离并接地的平安栅safety barrier / 平安栅平安栅危险区域 非危险区域 2007 DEHN + SHNE / protected by ISO 16016Konferenz Jurata 2021 Isolation from earth of the intrinsically safe equipment? 本质平安设备能否对地隔离本质平安设备能否对地隔离? Type of protection - Category ia or ib? 防护类别防护类别 ia 或或 ib? Compliance with the maximum permissible values for Lo and Co 能否满足最大允许的电感电容值能否满足最大允许的电感电容值? Compliance with the maximum values for U0 and I0 能否满足电压和电流的最大值能否满足电压和电流的最大值? Energy coordination of surge protective device and terminal equipment 电涌维护器和终端设备能否能量协调电涌维护器和终端设备能否能量协